/*
 * Jooby https://jooby.io
 * Apache License Version 2.0 https://jooby.io/LICENSE.txt
 * Copyright 2014 Edgar Espina
 */
package io.jooby.test;

import static io.jooby.ExecutionMode.DEFAULT;
import static io.jooby.ExecutionMode.EVENT_LOOP;
import static io.jooby.ExecutionMode.WORKER;
import static io.jooby.MediaType.text;
import static io.jooby.MediaType.xml;
import static io.jooby.test.TestUtil.*;
import static okhttp3.RequestBody.create;
import static org.junit.jupiter.api.Assertions.assertEquals;
import static org.junit.jupiter.api.Assertions.assertNotNull;
import static org.junit.jupiter.api.Assertions.assertNull;
import static org.junit.jupiter.api.Assertions.assertTrue;

import java.io.ByteArrayInputStream;
import java.io.IOException;
import java.io.Reader;
import java.io.StringReader;
import java.io.Writer;
import java.nio.channels.FileChannel;
import java.nio.charset.StandardCharsets;
import java.nio.file.Files;
import java.nio.file.Path;
import java.nio.file.Paths;
import java.time.Duration;
import java.time.Instant;
import java.time.ZoneId;
import java.time.format.DateTimeFormatter;
import java.util.ArrayList;
import java.util.Arrays;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;
import java.util.Locale;
import java.util.Map;
import java.util.Optional;
import java.util.Scanner;
import java.util.Set;
import java.util.UUID;
import java.util.concurrent.CompletableFuture;
import java.util.concurrent.atomic.AtomicInteger;
import java.util.function.Function;
import java.util.stream.Collectors;
import java.util.stream.Stream;
import java.util.zip.GZIPInputStream;

import org.apache.commons.io.IOUtils;
import org.junit.jupiter.api.DisplayName;

import com.google.common.base.Splitter;
import edu.umd.cs.findbugs.annotations.NonNull;
import io.jooby.*;
import io.jooby.handlebars.HandlebarsModule;
import io.jooby.handler.AccessLogHandler;
import io.jooby.handler.AssetHandler;
import io.jooby.handler.AssetSource;
import io.jooby.handler.CacheControl;
import io.jooby.handler.CorsHandler;
import io.jooby.handler.CsrfHandler;
import io.jooby.handler.HeadHandler;
import io.jooby.handler.TraceHandler;
import io.jooby.handler.WebVariables;
import io.jooby.jackson.JacksonModule;
import io.jooby.jackson3.Jackson3Module;
import io.jooby.junit.ServerTest;
import io.jooby.junit.ServerTestRunner;
import io.jooby.netty.NettyServer;
import io.jooby.output.OutputOptions;
import io.jooby.rxjava3.Reactivex;
import io.jooby.undertow.UndertowServer;
import io.reactivex.rxjava3.core.Single;
import okhttp3.FormBody;
import okhttp3.MediaType;
import okhttp3.MultipartBody;
import okhttp3.RequestBody;
import okhttp3.ResponseBody;

public class FeaturedTest {

  private static MediaType json = MediaType.parse("application/json");

  private static MediaType textplain = MediaType.parse("text/plain");

  public static class Datafile {

    public final String name;

    public final FileUpload filename;

    public Datafile(String name, FileUpload filename) {
      this.name = name;
      this.filename = filename;
    }
  }

  public static class Datafiles {

    public final String name;

    public final List<FileUpload> filename;

    public Datafiles(String name, List<FileUpload> filename) {
      this.name = name;
      this.filename = filename;
    }
  }

  @ServerTest
  public void sayHi(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/", ctx -> "Hello World!");
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals("Hello World!", rsp.body().string());
                    assertEquals(200, rsp.code());
                    assertEquals(12, rsp.body().contentLength());
                  });
            });
  }

  @ServerTest(executionMode = EVENT_LOOP)
  public void sayHiFromIO(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/", ctx -> "Non-blocking:" + ctx.getRoute().isNonBlocking());
              app.dispatch(
                  () -> {
                    app.get("/worker", ctx -> "Non-blocking:" + ctx.getRoute().isNonBlocking());
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals("Non-blocking:true", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });

              client.get(
                  "/worker",
                  rsp -> {
                    assertEquals("Non-blocking:false", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });

              client.get(
                  "/favicon.ico",
                  rsp -> {
                    assertEquals("", rsp.body().string());
                    assertEquals(404, rsp.code());
                    assertEquals(0, rsp.body().contentLength());
                  });

              client.get(
                  "/notFound",
                  rsp -> {
                    assertEquals(
                        "<!doctype html>\n"
                            + "<html>\n"
                            + "<head>\n"
                            + "<meta charset=\"utf-8\">\n"
                            + "<style>\n"
                            + "body {font-family: \"open sans\",sans-serif; margin-left: 20px;}\n"
                            + "h1 {font-weight: 300; line-height: 44px; margin: 25px 0 0 0;}\n"
                            + "h2 {font-size: 16px;font-weight: 300; line-height: 44px; margin:"
                            + " 0;}\n"
                            + "footer {font-weight: 300; line-height: 44px; margin-top: 10px;}\n"
                            + "hr {background-color: #f7f7f9;}\n"
                            + "div.trace {border:1px solid #e1e1e8; background-color: #f7f7f9;}\n"
                            + "p {padding-left: 20px;}\n"
                            + "p.tab {padding-left: 40px;}\n"
                            + "</style>\n"
                            + "<title>Not Found (404)</title>\n"
                            + "<body>\n"
                            + "<h1>Not Found</h1>\n"
                            + "<hr>\n"
                            + "<h2>message: /notFound</h2>\n"
                            + "<h2>status code: 404</h2>\n"
                            + "</body>\n"
                            + "</html>",
                        rsp.body().string());
                    assertEquals(404, rsp.code());
                    assertEquals(608, rsp.body().contentLength());
                  });
            });
  }

  @ServerTest(executionMode = WORKER)
  public void sayHiFromWorker(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/", ctx -> "Non-blocking:" + ctx.getRoute().isNonBlocking());
              app.dispatch(
                  () -> {
                    app.get("/worker", ctx -> "Non-blocking:" + ctx.getRoute().isNonBlocking());
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/?foo=bar",
                  rsp -> {
                    assertEquals("Non-blocking:false", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });

              client.get(
                  "/worker",
                  rsp -> {
                    assertEquals("Non-blocking:false", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });

              client.get(
                  "/favicon.ico",
                  rsp -> {
                    assertEquals("", rsp.body().string());
                    assertEquals(404, rsp.code());
                    assertEquals(0, rsp.body().contentLength());
                  });

              client.get(
                  "/notFound",
                  rsp -> {
                    assertEquals(
                        "<!doctype html>\n"
                            + "<html>\n"
                            + "<head>\n"
                            + "<meta charset=\"utf-8\">\n"
                            + "<style>\n"
                            + "body {font-family: \"open sans\",sans-serif; margin-left: 20px;}\n"
                            + "h1 {font-weight: 300; line-height: 44px; margin: 25px 0 0 0;}\n"
                            + "h2 {font-size: 16px;font-weight: 300; line-height: 44px; margin:"
                            + " 0;}\n"
                            + "footer {font-weight: 300; line-height: 44px; margin-top: 10px;}\n"
                            + "hr {background-color: #f7f7f9;}\n"
                            + "div.trace {border:1px solid #e1e1e8; background-color: #f7f7f9;}\n"
                            + "p {padding-left: 20px;}\n"
                            + "p.tab {padding-left: 40px;}\n"
                            + "</style>\n"
                            + "<title>Not Found (404)</title>\n"
                            + "<body>\n"
                            + "<h1>Not Found</h1>\n"
                            + "<hr>\n"
                            + "<h2>message: /notFound</h2>\n"
                            + "<h2>status code: 404</h2>\n"
                            + "</body>\n"
                            + "</html>",
                        rsp.body().string());
                    assertEquals(404, rsp.code());
                    assertEquals(608, rsp.body().contentLength());
                  });
            });
  }

  @ServerTest
  public void rawPath(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/{code}", Context::getRequestPath);
            })
        .ready(
            client -> {
              client.get(
                  "/foo",
                  rsp -> {
                    assertEquals("/foo", rsp.body().string());
                    assertEquals(200, rsp.code());
                    assertEquals(4, rsp.body().contentLength());
                  });

              client.get(
                  "/a+b",
                  rsp -> {
                    assertEquals("/a+b", rsp.body().string());
                    assertEquals(200, rsp.code());
                    assertEquals(4, rsp.body().contentLength());
                  });

              client.get(
                  "/%2F",
                  rsp -> {
                    assertEquals("/%2F", rsp.body().string());
                    assertEquals(200, rsp.code());
                    assertEquals(4, rsp.body().contentLength());
                  });
            });
  }

  @ServerTest
  public void httpMethods(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/", ctx -> ctx.getMethod());

              app.post("/", ctx -> ctx.getMethod());

              app.put("/", ctx -> ctx.getMethod());

              app.delete("/", ctx -> ctx.getMethod());

              app.patch("/", ctx -> ctx.getMethod());
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals("GET", rsp.body().string());
                  });

              client.post(
                  "/",
                  rsp -> {
                    assertEquals("POST", rsp.body().string());
                  });

              client.put(
                  "/",
                  rsp -> {
                    assertEquals("PUT", rsp.body().string());
                  });

              client.delete(
                  "/",
                  rsp -> {
                    assertEquals("DELETE", rsp.body().string());
                  });

              client.put(
                  "/",
                  rsp -> {
                    assertEquals("PUT", rsp.body().string());
                  });

              client.patch(
                  "/",
                  rsp -> {
                    assertEquals("PATCH", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void gzip(ServerTestRunner runner) throws IOException {
    String text =
        "Praesent blandit, justo a luctus elementum, ante sapien pellentesque tortor, vitae maximus"
            + " nulla augue sed nulla. Phasellus quis turpis ac mi tristique aliquam. Suspendisse"
            + " tellus sem, sollicitudin ac elit id, laoreet viverra erat. Proin libero nulla,"
            + " efficitur at facilisis a, placerat in ligula. Quisque sem dolor, efficitur ac nisl"
            + " ut, porttitor iaculis leo. Nullam auctor neque augue, quis malesuada nisl rhoncus"
            + " id. Quisque ut odio erat. Mauris pellentesque suscipit libero et laoreet. Nulla"
            + " ipsum enim, sodales in risus egestas, tempus pulvinar erat. Sed elementum, leo eget"
            + " vulputate commodo, ligula eros ullamcorper risus, at feugiat neque ipsum quis"
            + " lectus. Nulla sit amet lectus lacinia, congue sapien ac, vehicula lacus. Vestibulum"
            + " vitae vestibulum enim. Proin vulputate, quam ut commodo pellentesque, enim tortor"
            + " ornare neque, a aliquam massa felis a ligula. Pellentesque lorem erat, fringilla at"
            + " ipsum a, scelerisque hendrerit lorem. Sed interdum nibh at ante consequat, vitae"
            + " fermentum augue luctus.";
    runner
        .options(new ServerOptions().setCompressionLevel(ServerOptions.DEFAULT_COMPRESSION_LEVEL))
        .define(
            app -> {
              app.get("/gzip", ctx -> text);
            })
        .ready(
            client -> {
              client
                  .get("/gzip")
                  .prepare(
                      req -> {
                        req.addHeader("Accept-Encoding", "gzip");
                      })
                  .execute(
                      rsp -> {
                        int min = 525;
                        int max = 532;
                        ResponseBody body = rsp.body();
                        long len = body.contentLength();
                        assertTrue(len == min || len == max, "Content-Length:" + len);
                        assertEquals("gzip", rsp.header("content-encoding"));
                        assertEquals(text, ungzip(body.bytes()));
                      });

              // No ContentNegotiation-Encoding
              client
                  .get("/gzip")
                  .prepare(
                      req -> {
                        // NOTE: required bc okhttp always set ContentNegotiation-Encoding to gzip
                        req.addHeader("Accept-Encoding", "");
                      })
                  .execute(
                      rsp -> {
                        ResponseBody body = rsp.body();
                        assertEquals(text, new String(body.bytes()));
                        assertEquals(1013, body.contentLength());
                        assertEquals(null, rsp.header("content-encoding"));
                      });
            });
  }

  private String ungzip(byte[] buff) throws IOException {
    GZIPInputStream gzip = new GZIPInputStream(new ByteArrayInputStream(buff));
    Scanner scanner = new Scanner(gzip);
    StringBuilder str = new StringBuilder();
    while (scanner.hasNext()) {
      str.append(scanner.nextLine());
    }
    return str.toString();
  }

  @ServerTest
  public void pathVariable(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/articles/{id}", ctx -> ctx.path("id").intValue());

              app.get("/articles/*", ctx -> ctx.path("*").value());

              app.get("/file/*path", ctx -> ctx.path("path").value());

              app.get(
                  "/catchallWithVarPrefix/{id}/*path",
                  ctx -> ctx.path("id").value() + ":" + ctx.path("path").value());

              app.get("/regex/{nid:[0-9]+}", ctx -> ctx.path("nid").intValue());
              app.get("/regex/{zid:[0-9]+}/edit", ctx -> ctx.path("zid").intValue());

              app.get("/file/{file}.json", ctx -> ctx.path("file").value() + ".JSON");

              app.get(
                  "/file/{file}.{ext}",
                  ctx -> ctx.path("file").value() + "." + ctx.path("ext").value());

              app.get("/profile/{pid}", ctx -> ctx.path("pid").value());

              app.get("/profile/me", ctx -> "me!");
            })
        .ready(
            client -> {
              client.get(
                  "/articles/123",
                  rsp -> {
                    assertEquals("123", rsp.body().string());
                  });

              client.get(
                  "/articles/tail/match",
                  rsp -> {
                    assertEquals("tail/match", rsp.body().string());
                  });

              client.get(
                  "/catchallWithVarPrefix/55/js/index.js",
                  rsp -> {
                    assertEquals("55:js/index.js", rsp.body().string());
                  });

              client.get(
                  "/file/js/index.js",
                  rsp -> {
                    assertEquals("js/index.js", rsp.body().string());
                  });

              client.get(
                  "/regex/678",
                  rsp -> {
                    assertEquals("678", rsp.body().string());
                  });

              client.get(
                  "/regex/678/edit",
                  rsp -> {
                    assertEquals("678", rsp.body().string());
                  });

              client.get(
                  "/regex/678d",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });

              client.get(
                  "/file/foo.js",
                  rsp -> {
                    assertEquals("foo.js", rsp.body().string());
                  });

              client.get(
                  "/file/foo.json",
                  rsp -> {
                    assertEquals("foo.JSON", rsp.body().string());
                  });

              client.get(
                  "/profile/me",
                  rsp -> {
                    assertEquals("me!", rsp.body().string());
                  });

              client.get(
                  "/profile/edgar",
                  rsp -> {
                    assertEquals("edgar", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void paramKeys(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/articles/{id}", ctx -> ctx.getRoute().getPathKeys());

              app.get("/articles/*", ctx -> ctx.getRoute().getPathKeys());

              app.get("/file/*path", ctx -> ctx.getRoute().getPathKeys());

              app.get("/regex/{nid:[0-9]+}", ctx -> ctx.getRoute().getPathKeys());
              app.get("/regex/{zid:[0-9]+}/edit", ctx -> ctx.getRoute().getPathKeys());

              app.get("/file/{file}.json", ctx -> ctx.getRoute().getPathKeys());

              app.get("/file/{file}.{ext}", ctx -> ctx.getRoute().getPathKeys());

              app.get("/profile/{pid}", ctx -> ctx.getRoute().getPathKeys());

              app.get("/profile/me", ctx -> ctx.getRoute().getPathKeys());
            })
        .ready(
            client -> {
              client.get(
                  "/articles/123",
                  rsp -> {
                    assertEquals("[id]", rsp.body().string());
                  });

              client.get(
                  "/articles/tail/match",
                  rsp -> {
                    assertEquals("[*]", rsp.body().string());
                  });

              client.get(
                  "/file/js/index.js",
                  rsp -> {
                    assertEquals("[path]", rsp.body().string());
                  });

              client.get(
                  "/regex/678",
                  rsp -> {
                    assertEquals("[nid]", rsp.body().string());
                  });

              client.get(
                  "/regex/678/edit",
                  rsp -> {
                    assertEquals("[zid]", rsp.body().string());
                  });

              client.get(
                  "/file/foo.js",
                  rsp -> {
                    assertEquals("[file, ext]", rsp.body().string());
                  });

              client.get(
                  "/file/foo.json",
                  rsp -> {
                    assertEquals("[file]", rsp.body().string());
                  });

              client.get(
                  "/profile/me",
                  rsp -> {
                    assertEquals("[]", rsp.body().string());
                  });

              client.get(
                  "/profile/edgar",
                  rsp -> {
                    assertEquals("[pid]", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void pathEncoding(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/{value}", ctx -> ctx.getRequestPath() + "@" + ctx.path("value").value());
            })
        .ready(
            client -> {
              client.get(
                  "/a+b",
                  rsp -> {
                    assertEquals("/a+b@a+b", rsp.body().string());
                  });
              client.get(
                  "/a b",
                  rsp -> {
                    assertEquals("/a%20b@a b", rsp.body().string());
                  });
              client.get(
                  "/%2F%2B",
                  rsp -> {
                    assertEquals("/%2F%2B@/+", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void queryString(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/", ctx -> ctx.queryString() + "@" + ctx.query("q").value(""));

              app.get("/value", ctx -> ctx.query("user"));
            })
        .ready(
            client -> {
              client.get(
                  "/?q=a+b",
                  rsp -> {
                    assertEquals("?q=a+b@a b", rsp.body().string());
                  });
              client.get(
                  "/",
                  rsp -> {
                    assertEquals("@", rsp.body().string());
                  });

              client.get(
                  "/value?user.name=user&user.pass=pwd",
                  rsp -> {
                    assertEquals("{name=user, pass=pwd}", rsp.body().string());
                  });
            });
  }

  @ServerTest(executionMode = {EVENT_LOOP, WORKER})
  public void form(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.post("/", ctx -> ctx.form());
            })
        .ready(
            client -> {
              client.post(
                  "/",
                  new FormBody.Builder().add("q", "a b").add("user.name", "user").build(),
                  rsp -> {
                    assertEquals("{q=a b, user={name=user}}", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void multipart(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.post(
                  "/large",
                  ctx -> {
                    FileUpload f = ctx.file("f");
                    return new String(f.bytes(), StandardCharsets.UTF_8);
                  });

              app.post(
                  "/f",
                  ctx -> {
                    FileUpload f = ctx.file("f");
                    return f.getFileName()
                        + "(type="
                        + f.getContentType()
                        + ";exists="
                        + Files.exists(f.path())
                        + ")";
                  });

              app.post(
                  "/files",
                  ctx -> {
                    List<FileUpload> files = ctx.files("f");
                    return files.stream()
                        .map(f -> f.getFileName() + "=" + f.getFileSize())
                        .collect(Collectors.toList());
                  });

              app.post(
                  "/datafile",
                  ctx -> {
                    Datafile file = ctx.form(Datafile.class);
                    String result = file.name + "=" + Files.exists(file.filename.path());
                    return result;
                  });

              app.post(
                  "/datafiles",
                  ctx -> {
                    Datafiles file = ctx.form(Datafiles.class);
                    return file.name + "=" + file.filename;
                  });

              app.post(
                  "/multipart",
                  ctx -> {
                    Formdata formdata = ctx.form();
                    Map<String, List<String>> multimap = formdata.toMultimap();
                    Map<String, Object> rsp = new LinkedHashMap<>();
                    rsp.putAll(multimap);
                    rsp.put("f", formdata.files("f"));
                    return rsp;
                  });
            })
        .ready(
            client -> {
              client.post(
                  "/large",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart(
                          "f", "19kb.txt", create(_19kb, MediaType.parse("text/plain")))
                      .build(),
                  rsp -> {
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.post(
                  "/f",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart("user.name", "user")
                      .addFormDataPart(
                          "f",
                          "fileupload.js",
                          create(
                              userdir("src", "test", "resources", "files", "fileupload.js")
                                  .toFile(),
                              MediaType.parse("application/javascript")))
                      .build(),
                  rsp -> {
                    assertEquals(
                        "fileupload.js(type=application/javascript;exists=true)",
                        rsp.body().string());
                  });

              client.post(
                  "/files",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart("user.name", "user")
                      .addFormDataPart(
                          "f", "f1.txt", create("text1", MediaType.parse("text/plain")))
                      .addFormDataPart(
                          "f", "f2.txt", create("text2", MediaType.parse("text/plain")))
                      .build(),
                  rsp -> {
                    assertEquals("[f1.txt=5, f2.txt=5]", rsp.body().string());
                  });

              client.post(
                  "/multipart",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart("user.name", "user")
                      .addFormDataPart(
                          "f", "f1.txt", create("text1", MediaType.parse("text/plain")))
                      .addFormDataPart(
                          "f", "f2.txt", create("text2", MediaType.parse("text/plain")))
                      .build(),
                  rsp -> {
                    assertEquals("{user.name=[user], f=[f1.txt, f2.txt]}", rsp.body().string());
                  });

              client.post(
                  "/datafile",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart("name", "foo_report")
                      .addFormDataPart(
                          "filename",
                          "fileupload.js",
                          create(
                              userdir("src", "test", "resources", "files", "fileupload.js")
                                  .toFile(),
                              MediaType.parse("application/javascript")))
                      .build(),
                  rsp -> {
                    assertEquals("foo_report=true", rsp.body().string());
                  });

              client.post(
                  "/datafiles",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart("name", "foo_report")
                      .addFormDataPart(
                          "filename", "f1.txt", create("text1", MediaType.parse("text/plain")))
                      .addFormDataPart(
                          "filename", "f2.txt", create("text2", MediaType.parse("text/plain")))
                      .build(),
                  rsp -> {
                    assertEquals("foo_report=[f1.txt, f2.txt]", rsp.body().string());
                  });
            });
  }

  @ServerTest(executionMode = EVENT_LOOP)
  public void beforeAfter(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.before(
                  ctx -> {
                    StringBuilder buff = new StringBuilder();
                    buff.append("before1:" + ctx.isInIoThread()).append(";");
                    ctx.setAttribute("buff", buff);
                  });

              app.after(
                  (ctx, value, failure) -> {
                    StringBuilder buff = (StringBuilder) value;
                    buff.append("after1:" + ctx.isInIoThread()).append(";");
                  });

              app.dispatch(
                  () -> {
                    app.before(
                        ctx -> {
                          StringBuilder buff = ctx.getAttribute("buff");
                          buff.append("before2:" + ctx.isInIoThread()).append(";");
                        });

                    app.after(
                        (ctx, value, failure) -> {
                          StringBuilder buff = ctx.getAttribute("buff");
                          buff.append("after2:" + ctx.isInIoThread()).append(";");
                        });

                    app.get(
                        "/",
                        ctx -> {
                          StringBuilder buff = ctx.getAttribute("buff");
                          buff.append("result:").append(ctx.isInIoThread()).append(";");
                          return buff;
                        });
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals(
                        "before1:false;before2:false;result:false;after2:false;after1:false;",
                        rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void use(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.before(ctx -> ctx.setAttribute("prefix", "%"));

              app.use(next -> ctx -> "{" + ctx.getAttribute("prefix") + next.apply(ctx) + "}");

              app.use(next -> ctx -> "<" + ctx.getAttribute("prefix") + next.apply(ctx) + ">");

              app.get("/decorator", ctx -> ctx.getAttribute("prefix") + "OK" + "%");
            })
        .ready(
            client -> {
              client.get(
                  "/decorator",
                  rsp -> {
                    assertEquals("{%<%%OK%>}", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void decoder(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.install(new Jackson3Module());

              app.post("/map", ctx -> ctx.body(Map.class));

              app.post(
                  "/toListInt",
                  ctx -> {
                    List<Integer> ints = ctx.body().toList(Integer.class);
                    return ints;
                  });

              app.post(
                  "/intBody",
                  ctx -> {
                    return ctx.body().to(Integer.class);
                  });

              app.post("/str", ctx -> ctx.body().value());
            })
        .ready(
            client -> {
              client.header("Content-Type", "application/json");
              client.post(
                  "/map",
                  create("{\"foo\": \"bar\"}", json),
                  rsp -> {
                    assertEquals("{\"foo\":\"bar\"}", rsp.body().string());
                  });

              client.header("Content-Type", "application/json");
              client.post(
                  "/toListInt",
                  create("[3, 4, 1]", json),
                  rsp -> {
                    assertEquals("[3,4,1]", rsp.body().string());
                  });

              client.post(
                  "/intBody",
                  create("678", textplain),
                  rsp -> {
                    assertEquals("678", rsp.body().string());
                  });

              client.post(
                  "/str",
                  create(_19kb, textplain),
                  rsp -> {
                    String value = rsp.body().string();
                    assertEquals(_19kb, value);
                  });
            });
  }

  @ServerTest
  public void jsonVsRawOutput(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.install(new Jackson3Module());

              app.path(
                  "/api/pets",
                  () -> {
                    app.get(
                        "/{id}",
                        ctx -> {
                          ctx.setResponseType(io.jooby.MediaType.json);
                          return "{\"message\": \"" + ctx.path("id") + "\"}";
                        });

                    app.get(
                        "/raw",
                        ctx -> {
                          ctx.setResponseType(io.jooby.MediaType.json);
                          return "{\"message\": \"raw\"}".getBytes(StandardCharsets.UTF_8);
                        });

                    app.get("/", ctx -> List.of(mapOf("message", "fooo")));
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/api/pets/fooo",
                  rsp -> {
                    assertEquals("application/json", rsp.header("content-type").toLowerCase());
                    assertEquals("{\"message\": \"fooo\"}", rsp.body().string());
                  });

              client.get(
                  "/api/pets/raw",
                  rsp -> {
                    assertEquals("application/json", rsp.header("content-type").toLowerCase());
                    assertEquals("{\"message\": \"raw\"}", rsp.body().string());
                  });

              client.get(
                  "/api/pets",
                  rsp -> {
                    assertEquals("application/json", rsp.header("content-type").toLowerCase());
                    assertEquals("[{\"message\":\"fooo\"}]", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void defaultAndExplicitAcceptableResponses(ServerTestRunner runner) {
    class Message {
      String value = "OK";

      @Override
      public String toString() {
        return value;
      }
    }

    runner
        .define(
            app -> {
              app.encoder(
                  io.jooby.MediaType.json,
                  (@NonNull Context ctx, @NonNull Object value) ->
                      ctx.getOutputFactory().wrap("{" + value + "}"));

              app.encoder(
                  io.jooby.MediaType.xml,
                  (@NonNull Context ctx, @NonNull Object value) ->
                      ctx.getOutputFactory().wrap("<" + value + ">"));

              app.get(
                  "/defaults",
                  ctx -> {
                    ctx.query("type").toOptional().ifPresent(ctx::setResponseType);
                    return new Message();
                  });

              app.get("/produces", ctx -> new Message())
                  .produces(io.jooby.MediaType.json, io.jooby.MediaType.xml);
            })
        .ready(
            client -> {
              client.header("Accept", "application/json");
              client.get(
                  "/defaults",
                  rsp -> {
                    assertEquals("{OK}", rsp.body().string());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "application/xml");
              client.get(
                  "/defaults",
                  rsp -> {
                    assertEquals("<OK>", rsp.body().string());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "text/plain");
              client.get(
                  "/defaults",
                  rsp -> {
                    assertEquals("OK", rsp.body().string());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "*/*");
              client.get(
                  "/defaults",
                  rsp -> {
                    assertEquals("{OK}", rsp.body().string());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "text/html");
              client.get(
                  "/defaults",
                  rsp -> {
                    assertEquals(406, rsp.code());
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "text/html");
              client.get(
                  "/defaults?type=text/html",
                  rsp -> {
                    assertEquals("OK", rsp.body().string());
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "application/json");
              client.get(
                  "/produces",
                  rsp -> {
                    assertEquals("{OK}", rsp.body().string());
                    assertEquals("application/json", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "application/xml");
              client.get(
                  "/produces",
                  rsp -> {
                    assertEquals("<OK>", rsp.body().string());
                    assertEquals(
                        "application/xml;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "*/*");
              client.get(
                  "/produces",
                  rsp -> {
                    assertEquals("{OK}", rsp.body().string());
                    assertEquals("application/json", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "text/html");
              client.get(
                  "/produces",
                  rsp -> {
                    assertEquals(406, rsp.code());
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });

              client.header("Accept", "text/plain");
              client.get(
                  "/produces",
                  rsp -> {
                    assertEquals(406, rsp.code());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });
            });
  }

  @ServerTest
  public void consumes(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.decoder(io.jooby.MediaType.json, (ctx, type) -> "{" + ctx.body().value("") + "}");

              app.decoder(xml, (ctx, type) -> "<" + ctx.body().value("") + ">");

              app.get(
                  "/defaults",
                  ctx -> {
                    return ctx.body(String.class);
                  });

              app.get("/consumes", ctx -> ctx.body(String.class))
                  .consumes(io.jooby.MediaType.json, io.jooby.MediaType.xml);
            })
        .ready(
            client -> {
              client.header("Content-Type", "application/json");
              client.get(
                  "/defaults",
                  rsp -> {
                    assertEquals("{}", rsp.body().string());
                  });
              client.header("Content-Type", "application/xml");
              client.get(
                  "/defaults",
                  rsp -> {
                    assertEquals("<>", rsp.body().string());
                  });
              client.header("Content-Type", "application/json");
              client.get(
                  "/consumes",
                  rsp -> {
                    assertEquals("{}", rsp.body().string());
                  });
              client.header("Content-Type", "application/xml");
              client.get(
                  "/consumes",
                  rsp -> {
                    assertEquals("<>", rsp.body().string());
                  });
              client.header("Content-Type", "text/plain");
              client.get(
                  "/consumes",
                  rsp -> {
                    assertEquals(415, rsp.code());
                  });
            });
  }

  @ServerTest
  public void errorHandler(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.install(new Jackson3Module());

              app.get(
                  "/",
                  ctx -> {
                    if (ctx.getRequestPath().length() != 0) {
                      throw new IllegalArgumentException("Intentional error");
                    }
                    return "OK";
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals(
                        "text/html;charset=utf-8",
                        rsp.body().contentType().toString().toLowerCase());
                    assertEquals(
                        "<!doctype html>\n"
                            + "<html>\n"
                            + "<head>\n"
                            + "<meta charset=\"utf-8\">\n"
                            + "<style>\n"
                            + "body {font-family: \"open sans\",sans-serif; margin-left: 20px;}\n"
                            + "h1 {font-weight: 300; line-height: 44px; margin: 25px 0 0 0;}\n"
                            + "h2 {font-size: 16px;font-weight: 300; line-height: 44px; margin:"
                            + " 0;}\n"
                            + "footer {font-weight: 300; line-height: 44px; margin-top: 10px;}\n"
                            + "hr {background-color: #f7f7f9;}\n"
                            + "div.trace {border:1px solid #e1e1e8; background-color: #f7f7f9;}\n"
                            + "p {padding-left: 20px;}\n"
                            + "p.tab {padding-left: 40px;}\n"
                            + "</style>\n"
                            + "<title>Bad Request (400)</title>\n"
                            + "<body>\n"
                            + "<h1>Bad Request</h1>\n"
                            + "<hr>\n"
                            + "<h2>message: Intentional error</h2>\n"
                            + "<h2>status code: 400</h2>\n"
                            + "</body>\n"
                            + "</html>",
                        rsp.body().string());
                  });

              client.header("Accept", "application/json");
              client.get(
                  "/",
                  rsp -> {
                    assertEquals(
                        "application/json", rsp.body().contentType().toString().toLowerCase());
                    assertEquals(
                        "{\"message\":\"Intentional error\",\"statusCode\":400,\"reason\":\"Bad"
                            + " Request\"}",
                        rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void contextPath(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.setContextPath("/foo");

              app.get("/", ctx -> ctx.getRequestPath());

              app.get("/bar", ctx -> ctx.getRequestPath());
            })
        .ready(
            client -> {
              client.get(
                  "/foo",
                  rsp -> {
                    assertEquals("/foo", rsp.body().string());
                  });

              client.get(
                  "/foo/bar",
                  rsp -> {
                    assertEquals("/foo/bar", rsp.body().string());
                  });

              client.get(
                  "/foo/barx",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });

              client.get(
                  "/favicon.ico",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });

              client.get(
                  "/foo/favicon.ico",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });
            });
  }

  @ServerTest
  public void simpleRouterComposition(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              Jooby bar = new Jooby();
              bar.get("/bar", Context::getRequestPath);

              app.get("/foo", Context::getRequestPath);

              app.mount(bar);
            })
        .ready(
            client -> {
              client.get(
                  "/bar",
                  rsp -> {
                    assertEquals("/bar", rsp.body().string());
                  });

              client.get(
                  "/foo",
                  rsp -> {
                    assertEquals("/foo", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void dynamicRoutingComposition(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              Jooby v1 = new Jooby();
              v1.get("/api", ctx -> "v1");

              Jooby v2 = new Jooby();
              v2.get("/api", ctx -> "v2");

              app.mount(ctx -> ctx.header("version").value("").equals("v1"), v1);
              app.mount(ctx -> ctx.header("version").value("").equals("v2"), v2);

              app.get("/api", ctx -> "fallback");
            })
        .ready(
            client -> {
              client.header("version", "v2");
              client.get(
                  "/api",
                  rsp -> {
                    assertEquals("v2", rsp.body().string());
                  });

              client.header("version", "v1");
              client.get(
                  "/api",
                  rsp -> {
                    assertEquals("v1", rsp.body().string());
                  });

              client.get(
                  "/api",
                  rsp -> {
                    assertEquals("fallback", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void prefixPathOnExistingRouter(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              Jooby bar = new Jooby();
              bar.get("/bar", Context::getRequestPath);

              app.mount("/prefix", bar);
            })
        .ready(
            client -> {
              client.get(
                  "/prefix/bar",
                  rsp -> {
                    assertEquals("/prefix/bar", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void compose(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              Jooby bar = new Jooby();
              bar.get("/bar", Context::getRequestPath);

              app.path(
                  "/api",
                  () -> {
                    app.mount(bar);

                    app.mount("/bar", bar);
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/api/bar",
                  rsp -> {
                    assertEquals("/api/bar", rsp.body().string());
                  });
              client.get(
                  "/api/bar/bar",
                  rsp -> {
                    assertEquals("/api/bar/bar", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void routerCaseInsensitive(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.setRouterOptions(new RouterOptions().ignoreCase(true).ignoreTrailingSlash(true));
              app.get("/foo", Context::getRequestPath);

              app.get("/bar", Context::getRequestPath);
            })
        .ready(
            client -> {
              client.get(
                  "/foo",
                  rsp -> {
                    assertEquals("/foo", rsp.body().string());
                  });
              client.get(
                  "/foo/",
                  rsp -> {
                    assertEquals("/foo/", rsp.body().string());
                  });
              client.get(
                  "/fOo",
                  rsp -> {
                    assertEquals("/fOo", rsp.body().string());
                  });

              client.get(
                  "/bar",
                  rsp -> {
                    assertEquals("/bar", rsp.body().string());
                  });
              client.get(
                  "/BAR",
                  rsp -> {
                    assertEquals("/BAR", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void routerCaseSensitive(ServerTestRunner runner) {
    /** Now do it case sensitive: */
    runner
        .define(
            app -> {
              app.get("/foo", Context::getRequestPath);

              app.get("/BAR", Context::getRequestPath);
            })
        .ready(
            client -> {
              client.get(
                  "/foo",
                  rsp -> {
                    assertEquals("/foo", rsp.body().string());
                  });
              client.get(
                  "/fOo",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });

              client.get(
                  "/bar",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });
              client.get(
                  "/BAR",
                  rsp -> {
                    assertEquals("/BAR", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void maxRequestSize(ServerTestRunner runner) {
    runner
        .options(
            new ServerOptions()
                .setOutput(new OutputOptions().setSize(ServerOptions._16KB / 2))
                .setMaxRequestSize(ServerOptions._16KB))
        .define(
            app -> {
              app.post("/request-size", ctx -> ctx.body().value(""));

              app.get("/request-size", ctx -> ctx.body().value(""));
            })
        .ready(
            client -> {
              // Exceeds
              client.post(
                  "/request-size",
                  RequestBody.create(_19kb, MediaType.get("text/plain")),
                  rsp -> {
                    assertEquals(413, rsp.code());
                  });
              // Chunk by chunk
              client.post(
                  "/request-size",
                  RequestBody.create(_16kb, MediaType.get("text/plain")),
                  rsp -> {
                    assertEquals(200, rsp.code());
                    assertEquals(_16kb, rsp.body().string());
                  });
              // Single read
              client.post(
                  "/request-size",
                  RequestBody.create(_8kb, MediaType.get("text/plain")),
                  rsp -> {
                    assertEquals(200, rsp.code());
                    assertEquals(_8kb, rsp.body().string());
                  });
              // Empty
              client.post(
                  "/request-size",
                  RequestBody.create("", MediaType.get("text/plain")),
                  rsp -> {
                    assertEquals(200, rsp.code());
                    assertEquals("", rsp.body().string());
                  });
              // No body
              client.get(
                  "/request-size",
                  rsp -> {
                    assertEquals(200, rsp.code());
                    assertEquals("", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void trailinSlashIsANewRoute(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.setRouterOptions(new RouterOptions().ignoreTrailingSlash(true));
              app.get("/foo/", ctx -> "foo/");

              app.get("/foo", ctx -> "new foo");
            })
        .ready(
            client -> {
              client.get(
                  "/foo",
                  rsp -> {
                    assertEquals("new foo", rsp.body().string());
                  });
              client.get(
                  "/foo/",
                  rsp -> {
                    assertEquals("new foo", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void methodNotAllowed(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.post("/method", Context::getRequestPath);
            })
        .ready(
            client -> {
              client.get(
                  "/method",
                  rsp -> {
                    assertEquals(StatusCode.METHOD_NOT_ALLOWED.value(), rsp.code());
                    assertEquals("POST", rsp.header("Allow"));
                  });
            });
  }

  @ServerTest
  public void silentFavicon(ServerTestRunner runner) {
    runner
        .use(Jooby::new)
        .ready(
            client -> {
              client.get(
                  "/favicon.ico",
                  rsp -> {
                    assertEquals(StatusCode.NOT_FOUND.value(), rsp.code());
                  });
              client.get(
                  "/foo/favicon.ico",
                  rsp -> {
                    assertEquals(StatusCode.NOT_FOUND.value(), rsp.code());
                  });
            });
  }

  @ServerTest
  public void customHttpMethod(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.route("foo", "/bar", Context::getMethod);
            })
        .ready(
            client -> {
              client
                  .invoke("foo", "/bar")
                  .execute(
                      rsp -> {
                        assertEquals("FOO", rsp.body().string());
                      });
            });
  }

  @ServerTest
  public void setContentType(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/plain", ctx -> ctx.setResponseType(text).send("Text"));
            })
        .ready(
            client -> {
              client.get(
                  "/plain",
                  rsp -> {
                    assertEquals(
                        "text/plain;charset=utf-8",
                        rsp.body().contentType().toString().toLowerCase());
                    assertEquals("Text", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void setContentLen(ServerTestRunner runner) {
    String value = "...";
    runner
        .define(
            app -> {
              app.get(
                  "/len",
                  ctx -> ctx.setResponseType(text).setResponseLength(value.length()).send(value));
            })
        .ready(
            client -> {
              client.get(
                  "/len",
                  rsp -> {
                    assertEquals(
                        "text/plain;charset=utf-8",
                        rsp.body().contentType().toString().toLowerCase());
                    assertEquals("...", rsp.body().string());
                    assertEquals(3L, rsp.body().contentLength());
                  });
            });
  }

  @ServerTest
  public void sendStatusCode(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/statuscode", ctx -> ctx.send(StatusCode.OK));
            })
        .ready(
            client -> {
              client.get(
                  "/statuscode",
                  rsp -> {
                    assertEquals("", rsp.body().string());
                    assertEquals(0L, rsp.body().contentLength());
                  });
            });
  }

  @ServerTest(
      server = {UndertowServer.class, NettyServer.class},
      executionMode = DEFAULT)
  public void mixedMode(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/blocking", ctx -> !ctx.isInIoThread());

              app.use(Reactivex.rx());
              app.get("/reactive", ctx -> Single.fromCallable(() -> ctx.isInIoThread()));
            })
        .ready(
            client -> {
              client.get(
                  "/blocking",
                  rsp -> {
                    assertEquals("true", rsp.body().string());
                  });
              client.get(
                  "/reactive",
                  rsp -> {
                    assertEquals("true", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void defaultHeaders(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/", Context::getRequestPath);
            })
        .ready(
            client -> {
              String serverHeader =
                  Optional.of(runner.getServer())
                      .filter("Vertx"::equals)
                      // Vertx is Netty
                      .map(server -> "N")
                      .orElse(String.valueOf(runner.getServer().charAt(0)));
              client.get(
                  "/",
                  rsp -> {
                    assertNotNull(rsp.header("Date"));
                    assertEquals(serverHeader, rsp.header("Server"));
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                  });
            });
  }

  @ServerTest
  public void sendStream(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/txt",
                  ctx -> {
                    ctx.query("l")
                        .toOptional()
                        .ifPresent(len -> ctx.setResponseLength(Long.parseLong(len)));
                    return new ByteArrayInputStream(_19kb.getBytes(StandardCharsets.UTF_8));
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/txt",
                  rsp -> {
                    assertEquals("chunked", rsp.header("transfer-encoding").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/txt?l=" + _19kb.length(),
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void sendStreamRange(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/range",
                  ctx -> {
                    ctx.setResponseLength(_19kb.length());
                    return ctx.send(
                        new ByteArrayInputStream(_19kb.getBytes(StandardCharsets.UTF_8)));
                  });
            })
        .ready(
            client -> {
              client.header("Range", "bytes=-");
              client.get(
                  "/range",
                  rsp -> {
                    assertEquals(416, rsp.code());
                  });

              client.header("Range", "bytes=0-99");
              client.get(
                  "/range",
                  rsp -> {
                    assertEquals("bytes", rsp.header("accept-ranges"));
                    assertEquals("bytes 0-99/" + _19kb.length(), rsp.header("content-range"));
                    assertEquals("100", rsp.header("content-length"));
                    assertEquals(206, rsp.code());
                    assertEquals(_19kb.substring(0, 100), rsp.body().string());
                  });

              client.header("Range", "bytes=-100");
              client.get(
                  "/range",
                  rsp -> {
                    assertEquals("bytes", rsp.header("accept-ranges"));
                    assertEquals(
                        "bytes "
                            + (_19kb.length() - 100)
                            + "-"
                            + (_19kb.length() - 1)
                            + "/"
                            + _19kb.length(),
                        rsp.header("content-range"));
                    assertEquals("100", rsp.header("content-length"));
                    assertEquals(206, rsp.code());
                    assertEquals(_19kb.substring(_19kb.length() - 100), rsp.body().string());
                  });

              int last = _16kb.length() + 5;
              client.header("Range", "bytes=-" + last);
              client.get(
                  "/range",
                  rsp -> {
                    assertEquals("bytes", rsp.header("accept-ranges"));
                    assertEquals(
                        "bytes "
                            + (_19kb.length() - last)
                            + "-"
                            + (_19kb.length() - 1)
                            + "/"
                            + _19kb.length(),
                        rsp.header("content-range"));
                    assertEquals(Integer.toString(last), rsp.header("content-length"));
                    assertEquals(206, rsp.code());
                    assertEquals(_19kb.substring(_19kb.length() - last), rsp.body().string());
                  });
              client.header("Range", "bytes=0-" + last);
              client.get(
                  "/range",
                  rsp -> {
                    assertEquals("bytes", rsp.header("accept-ranges"));
                    assertEquals(
                        "bytes 0-" + last + "/" + _19kb.length(), rsp.header("content-range"));
                    assertEquals(Integer.toString(last + 1), rsp.header("content-length"));
                    assertEquals(206, rsp.code());
                    assertEquals(_19kb.substring(0, last + 1), rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void sendFile(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/filechannel",
                  ctx ->
                      FileChannel.open(userdir("src", "test", "resources", "files", "19kb.txt")));
              app.get("/path", ctx -> userdir("src", "test", "resources", "files", "19kb.txt"));
              app.get(
                  "/file",
                  ctx -> userdir("src", "test", "resources", "files", "19kb.txt").toFile());
              app.get(
                  "/filenotfound",
                  ctx -> userdir("src", "test", "resources", "files", "notfound.txt"));
              app.get(
                  "/attachment",
                  ctx -> {
                    Path file = userdir("src", "test", "resources", "files", "19kb.txt");
                    return new AttachedFile(
                        file, ctx.query("name").value(file.getFileName().toString()));
                  });
              app.get(
                  "/inline",
                  ctx -> {
                    Path file = userdir("src", "test", "resources", "files", "19kb.txt");
                    return new InlineFile(
                        file, ctx.query("name").value(file.getFileName().toString()));
                  });
              app.get(
                  "/attachment-builder",
                  ctx -> {
                    Path file = userdir("src", "test", "resources", "files", "19kb.txt");
                    return FileDownload.build(
                            file, ctx.query("name").value(file.getFileName().toString()))
                        .attachment();
                  });
              app.get(
                  "/inline-builder",
                  ctx -> {
                    Path file = userdir("src", "test", "resources", "files", "19kb.txt");
                    return FileDownload.build(
                            file, ctx.query("name").value(file.getFileName().toString()))
                        .inline();
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/filechannel",
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/path",
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/file",
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/filenotfound",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });

              client.get(
                  "/attachment",
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("content-type").toLowerCase());
                    assertEquals(
                        "attachment;filename=\"19kb.txt\"",
                        rsp.header("content-disposition").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/inline",
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("content-type").toLowerCase());
                    assertEquals(
                        "inline;filename=\"19kb.txt\"",
                        rsp.header("content-disposition").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/attachment-builder",
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("content-type").toLowerCase());
                    assertEquals(
                        "attachment;filename=\"19kb.txt\"",
                        rsp.header("content-disposition").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/inline-builder",
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("content-type").toLowerCase());
                    assertEquals(
                        "inline;filename=\"19kb.txt\"",
                        rsp.header("content-disposition").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/attachment?name=foo+bar.txt",
                  rsp -> {
                    assertEquals(null, rsp.header("transfer-encoding"));
                    assertEquals(
                        Integer.toString(_19kb.length()),
                        rsp.header("content-length").toLowerCase());
                    assertEquals(
                        "text/plain;charset=utf-8", rsp.header("content-type").toLowerCase());
                    assertEquals(
                        "attachment;filename=\"foo bar.txt\";filename*=utf-8''foo%20bar.txt",
                        rsp.header("content-disposition").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void sendFileRange(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/file-range",
                  ctx -> {
                    ctx.setResponseLength(_19kb.length());
                    return ctx.send(
                        FileChannel.open(userdir("src", "test", "resources", "files", "19kb.txt")));
                  });
            })
        .ready(
            client -> {
              client.header("Range", "bytes=0-99");
              client.get(
                  "/file-range",
                  rsp -> {
                    assertEquals("bytes", rsp.header("accept-ranges"));
                    assertEquals("bytes 0-99/" + _19kb.length(), rsp.header("content-range"));
                    assertEquals("100", rsp.header("content-length"));
                    assertEquals(206, rsp.code());
                    assertEquals(_19kb.substring(0, 100), rsp.body().string());
                  });

              client.header("Range", "bytes=-100");
              client.get(
                  "/file-range",
                  rsp -> {
                    assertEquals("bytes", rsp.header("accept-ranges"));
                    assertEquals(
                        "bytes "
                            + (_19kb.length() - 100)
                            + "-"
                            + (_19kb.length() - 1)
                            + "/"
                            + _19kb.length(),
                        rsp.header("content-range"));
                    assertEquals("100", rsp.header("content-length"));
                    assertEquals(206, rsp.code());
                    assertEquals(_19kb.substring(_19kb.length() - 100), rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void writer(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/19kb",
                  ctx ->
                      ctx.responseWriter(
                          writer -> {
                            try (StringReader reader = new StringReader(_19kb)) {
                              transfer(reader, writer);
                            }
                          }));

              app.get(
                  "/16kb",
                  ctx ->
                      ctx.responseWriter(
                          writer -> {
                            try (StringReader reader = new StringReader(_16kb)) {
                              transfer(reader, writer);
                            }
                          }));

              app.get(
                  "/8kb",
                  ctx ->
                      ctx.responseWriter(
                          writer -> {
                            try (StringReader reader = new StringReader(_8kb)) {
                              transfer(reader, writer);
                            }
                          }));
            })
        .ready(
            client -> {
              // Large responses always send as chunk
              client.get(
                  "/19kb",
                  rsp -> {
                    assertEquals(_19kb, rsp.body().string());
                    assertEquals("chunked", rsp.header("Transfer-Encoding").toLowerCase());
                    assertEquals(null, rsp.header("Content-Length"));
                  });
              // Responses <= 16kb may send content-length or chunks (server specific), but not
              // both.
              client.get(
                  "/16kb",
                  rsp -> {
                    assertEquals(_16kb, rsp.body().string());
                    AtomicInteger i = new AtomicInteger();
                    Optional.ofNullable(rsp.header("Content-Length"))
                        .ifPresent(
                            value -> {
                              assertEquals("16384", value);
                              i.incrementAndGet();
                            });
                    Optional.ofNullable(rsp.header("Transfer-Encoding"))
                        .ifPresent(
                            value -> {
                              assertEquals("chunked", value.toLowerCase());
                              i.incrementAndGet();
                            });
                    assertEquals(1, i.get());
                  });
              client.get(
                  "/8kb",
                  rsp -> {
                    assertEquals(_8kb, rsp.body().string());
                    AtomicInteger i = new AtomicInteger();
                    Optional.ofNullable(rsp.header("Content-Length"))
                        .ifPresent(
                            value -> {
                              assertEquals("8192", value);
                              i.incrementAndGet();
                            });
                    Optional.ofNullable(rsp.header("Transfer-Encoding"))
                        .ifPresent(
                            value -> {
                              assertEquals("chunked", value.toLowerCase());
                              i.incrementAndGet();
                            });
                    assertEquals(1, i.get());
                  });
            });
  }

  @ServerTest
  public void lifeCycle(ServerTestRunner runner) {
    AtomicInteger counter = new AtomicInteger();

    runner
        .define(
            app -> {
              app.onStarting(() -> counter.incrementAndGet());

              app.onStarting(() -> counter.incrementAndGet());

              app.onStop(
                  () -> {
                    counter.decrementAndGet();
                  });

              app.onStop(
                  () -> {
                    counter.decrementAndGet();
                    throw new IllegalStateException("intentional error");
                  });

              app.get("/lifeCycle", ctx -> counter.get());
            })
        .ready(
            client -> {
              client.get("/lifeCycle", rsp -> assertEquals("2", rsp.body().string()));
            });
  }

  @ServerTest
  public void sendRedirect(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/", ctx -> ctx.sendRedirect("/foo"));
              app.get("/foo", Context::getRequestPath);
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals("/foo", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void cookies(ServerTestRunner runner) {
    DateTimeFormatter fmt =
        DateTimeFormatter.ofPattern("EEE, dd-MMM-yyyy HH:mm:ss z", Locale.US)
            .withZone(ZoneId.of("GMT"));

    runner
        .define(
            app -> {
              app.get("/cookies", ctx -> ctx.cookieMap());

              app.get(
                  "/set-cookie",
                  ctx -> {
                    ctx.queryMap().entrySet().stream()
                        .map(e -> new Cookie(e.getKey(), e.getValue()))
                        .forEach(ctx::setResponseCookie);
                    return ctx.send(StatusCode.OK);
                  });

              app.get(
                  "/max-age",
                  ctx -> {
                    Cookie cookie =
                        new Cookie("foo", "bar").setMaxAge(ctx.query("maxAge").longValue(0));
                    return ctx.setResponseCookie(cookie).send(StatusCode.OK);
                  });

              app.get(
                  "/same-site",
                  ctx -> {
                    Cookie cookie =
                        new Cookie("foo", "bar")
                            .setSecure(ctx.query("secure").booleanValue(false))
                            .setSameSite(
                                ctx.query("sameSite").toOptional().map(SameSite::of).orElse(null));
                    return ctx.setResponseCookie(cookie).send(StatusCode.OK);
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/cookies",
                  response -> {
                    assertEquals("{}", response.body().string());
                  });
              client.header("Cookie", "foo=bar");
              client.get(
                  "/cookies",
                  response -> {
                    assertEquals("{foo=bar}", response.body().string());
                  });
              client.header("Cookie", "foo=bar; x=y");
              client.get(
                  "/cookies",
                  response -> {
                    assertEquals("{foo=bar, x=y}", response.body().string());
                  });
              client.header("Cookie", "X=x");
              client.get(
                  "/cookies",
                  response -> {
                    assertEquals("{X=x}", response.body().string());
                  });
              // response cookies
              client.get(
                  "/set-cookie",
                  response -> {
                    assertEquals(null, response.header("Set-Cookie"));
                  });
              client.get(
                  "/set-cookie?foo=bar",
                  response -> {
                    assertEquals("foo=bar;Path=/", response.header("Set-Cookie"));
                  });
              client.get(
                  "/set-cookie?foo=bar&x=y",
                  response -> {
                    assertEquals(
                        "[foo=bar;Path=/, x=y;Path=/]", response.headers("Set-Cookie").toString());
                  });
              // max-age
              client.get(
                  "/max-age",
                  response -> {
                    // expires
                    assertEquals(
                        "[foo=bar;Path=/;Max-Age=0;Expires=Thu, 01-Jan-1970 00:00:00 GMT]",
                        response.headers("Set-Cookie").toString());
                  });
              client.get(
                  "/max-age?maxAge=-1",
                  response -> {
                    // browser session
                    assertEquals("[foo=bar;Path=/]", response.headers("Set-Cookie").toString());
                  });
              Instant date = Instant.now();
              client.get(
                  "/max-age?maxAge=" + Duration.ofMinutes(30).getSeconds(),
                  response -> {
                    // Expire in 30 minutes from now on
                    String setCookie = response.header("Set-Cookie");
                    String prefix = "foo=bar;Path=/;";
                    assertTrue(setCookie.startsWith(prefix));
                    setCookie = setCookie.substring(prefix.length());
                    String maxAge = "Max-Age=1800;Expires=";
                    assertTrue(setCookie.startsWith(maxAge));
                    setCookie = setCookie.substring(maxAge.length());
                    Instant expires = Instant.from(fmt.parse(setCookie));
                    long minutes = Duration.between(date, expires).toMinutes();
                    // Give it -/+5
                    assertTrue(minutes >= 25 && minutes <= 35);
                  });
              client.get(
                  "/same-site",
                  response -> {
                    // browser session
                    assertEquals("[foo=bar;Path=/]", response.headers("Set-Cookie").toString());
                  });
              client.get(
                  "/same-site?sameSite=Lax",
                  response -> {
                    // browser session
                    assertEquals(
                        "[foo=bar;Path=/;SameSite=Lax]", response.headers("Set-Cookie").toString());
                  });
              client.get(
                  "/same-site?sameSite=Strict",
                  response -> {
                    // browser session
                    assertEquals(
                        "[foo=bar;Path=/;SameSite=Strict]",
                        response.headers("Set-Cookie").toString());
                  });
              client.get(
                  "/same-site?sameSite=None&secure=true",
                  response -> {
                    // browser session
                    assertEquals(
                        "[foo=bar;Path=/;SameSite=None;Secure]",
                        response.headers("Set-Cookie").toString());
                  });
              client.get(
                  "/same-site?sameSite=None",
                  response -> {
                    // browser session
                    assertEquals(400, response.code());
                  });
            });
  }

  @ServerTest
  public void varOnCatchAll(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/*", Context::pathMap);

              app.get("/query/?*x", Context::pathMap);

              app.get("/search/*q", Context::pathMap);
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals("{}", rsp.body().string());
                  });
              client.get(
                  "/x",
                  rsp -> {
                    assertEquals("{*=x}", rsp.body().string());
                  });
              client.get(
                  "/search",
                  rsp -> {
                    assertEquals("{*=search}", rsp.body().string());
                  });
              client.get(
                  "/search/x",
                  rsp -> {
                    assertEquals("{q=x}", rsp.body().string());
                  });
              client.get(
                  "/query/y",
                  rsp -> {
                    assertEquals("{x=y}", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void singlePageApp(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.assets(
                  "/?*",
                  new AssetHandler(
                      "fallback.html", AssetSource.create(app.getClassLoader(), "/www")));
            })
        .ready(
            client -> {
              client.get(
                  "/docs",
                  rsp -> {
                    assertEquals("fallback.html", rsp.body().string().trim());
                  });

              client.get(
                  "/docs/index.html",
                  rsp -> {
                    assertEquals("fallback.html", rsp.body().string().trim());
                  });

              client.get(
                  "/docs/v1",
                  rsp -> {
                    assertEquals("fallback.html", rsp.body().string().trim());
                  });

              client.get(
                  "/",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/index.html",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/note",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/note/index.html",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void staticSiteFromCpWithPrefix(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.assets("/?*", "/www");
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/index.html",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/note",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/note/index.html",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/about.html",
                  rsp -> {
                    assertEquals("about.html", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void staticSiteFromCp(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.assets("/www/?*", "/www");
            })
        .ready(
            client -> {
              client.get(
                  "/www",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/www/index.html",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/www/note",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/www/note/index.html",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/www/about.html",
                  rsp -> {
                    assertEquals("about.html", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void staticAssetsCaching(ServerTestRunner runner) {
    AssetSource source = AssetSource.create(Router.class.getClassLoader(), "/www");

    // defaults
    runner
        .define(
            app -> {
              app.assets("/www/?*", new AssetHandler(source));
            })
        .ready(
            client -> {
              client.get(
                  "/www/index.html",
                  rsp -> {
                    assertNotNull(rsp.header("ETag"));
                    assertNotNull(rsp.header("Last-Modified"));
                    assertNull(rsp.header("Cache-Control"));
                  });
            });

    // no cache for all
    runner
        .define(
            app -> {
              app.assets("/www/?*", source).setNoCache();
            })
        .ready(
            client -> {
              client.get(
                  "/www/index.html",
                  rsp -> {
                    assertNull(rsp.header("ETag"));
                    assertNull(rsp.header("Last-Modified"));
                    assertEquals("no-store, must-revalidate", rsp.header("Cache-Control"));
                  });
            });

    // per path config
    runner
        .define(
            app -> {
              app.assets("/www/?*", source)
                  .cacheControl(
                      path -> {
                        if (path.endsWith("about.html")) {
                          return CacheControl.noCache();
                        } else if (path.equals("foo.js")) {
                          return CacheControl.defaults().setETag(false);
                        } else {
                          return CacheControl.defaults();
                        }
                      });
            })
        .ready(
            client -> {
              client.get(
                  "/www/index.html",
                  rsp -> {
                    assertNotNull(rsp.header("ETag"));
                    assertNotNull(rsp.header("Last-Modified"));
                    assertNull(rsp.header("Cache-Control"));
                  });

              client.get(
                  "/www/about.html",
                  rsp -> {
                    assertNull(rsp.header("ETag"));
                    assertNull(rsp.header("Last-Modified"));
                    assertEquals("no-store, must-revalidate", rsp.header("Cache-Control"));
                  });

              client.get(
                  "/www/foo.js",
                  rsp -> {
                    assertNull(rsp.header("ETag"));
                    assertNotNull(rsp.header("Last-Modified"));
                    assertNull(rsp.header("Cache-Control"));
                  });
            });

    // spa
    runner
        .define(
            app -> {
              app.assets(
                  "/www/?*",
                  new AssetHandler("index.html", source)
                      .cacheControl(
                          path -> {
                            if (path.endsWith("index.html")) {
                              return CacheControl.noCache();
                            } else {
                              return CacheControl.defaults();
                            }
                          }));
            })
        .ready(
            client -> {
              client.get(
                  "/www",
                  rsp -> {
                    assertNull(rsp.header("ETag"));
                    assertNull(rsp.header("Last-Modified"));
                    assertEquals("no-store, must-revalidate", rsp.header("Cache-Control"));
                  });

              client.get(
                  "/www/index.html",
                  rsp -> {
                    assertNull(rsp.header("ETag"));
                    assertNull(rsp.header("Last-Modified"));
                    assertEquals("no-store, must-revalidate", rsp.header("Cache-Control"));
                  });

              client.get(
                  "/www/some-fancy-spa-page",
                  rsp -> {
                    assertNull(rsp.header("ETag"));
                    assertNull(rsp.header("Last-Modified"));
                    assertEquals("no-store, must-revalidate", rsp.header("Cache-Control"));
                  });
            });
  }

  @ServerTest
  public void staticSiteFromCpWithPrefixPathAndPrefixLocation(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.assets("/static/?*", "/www");
            })
        .ready(
            client -> {
              client.get(
                  "/static",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/static/index.html",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/static/note",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/static/note/index.html",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/static/about.html",
                  rsp -> {
                    assertEquals("about.html", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void staticSiteFromFs(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.assets("/?*", userdir("src", "test", "resources", "www"));
            })
        .ready(
            client -> {
              client.get(
                  "/",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/index.html",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/note",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/note/index.html",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/about.html",
                  rsp -> {
                    assertEquals("about.html", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void staticSiteFromFsUsingPathPrefix(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.assets("/static/?*", userdir("src", "test", "resources", "www"));
            })
        .ready(
            client -> {
              client.get(
                  "/static",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/static/index.html",
                  rsp -> {
                    assertEquals("index.html", rsp.body().string().trim());
                  });

              client.get(
                  "/static/note",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/static/note/index.html",
                  rsp -> {
                    assertEquals("note.html", rsp.body().string().trim());
                  });

              client.get(
                  "/static/about.html",
                  rsp -> {
                    assertEquals("about.html", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void assets(ServerTestRunner runner) throws IOException {

    String cl1 = String.valueOf(userdir("src", "test", "www", "js", "index.js").toFile().length());
    String cl2 =
        String.valueOf(getClass().getResource("/www/foo.js").openConnection().getContentLength());
    String cl4 =
        String.valueOf(userdir("src", "test", "www", "css", "styles.css").toFile().length());
    String cl5 = String.valueOf(userdir("src", "test", "www", "index.html").toFile().length());
    runner
        .define(
            app -> {
              app.assets("/static/?*", userdir("src", "test", "www"));
              app.assets("/*", userdir("src", "test", "www"));
              app.assets("/cp/*", "/www");

              app.assets(
                  "/m/*",
                  AssetSource.create(userdir("src", "test", "www")),
                  AssetSource.create(getClass().getClassLoader(), "/www"));

              app.assets("/fsfile.js", userdir("src", "test", "www", "js", "index.js"));
              app.assets("/cpfile.js", "/www/foo.js");
            })
        .ready(
            client -> {
              client.get(
                  "/cpfile.js",
                  rsp -> {
                    assertEquals(
                        "application/javascript;charset=utf-8",
                        rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl2, rsp.header("Content-Length").toLowerCase());
                  });
              // single file
              client.get(
                  "/fsfile.js",
                  rsp -> {
                    assertEquals(
                        "application/javascript;charset=utf-8",
                        rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl1, rsp.header("Content-Length").toLowerCase());
                  });
              /** Multiple sources on same path: */
              client.get(
                  "/m/foo.js",
                  rsp -> {
                    assertEquals(
                        "application/javascript;charset=utf-8",
                        rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl2, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/m/js/index.js",
                  rsp -> {
                    assertEquals(
                        "application/javascript;charset=utf-8",
                        rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl1, rsp.header("Content-Length").toLowerCase());
                    assertEquals(200, rsp.code());

                    String etag = rsp.header("etag");
                    client.header("If-None-Match", etag);
                    client.get(
                        "/m/js/index.js",
                        etagrsp -> {
                          assertEquals(null, etagrsp.header("etag"));
                          assertEquals(304, etagrsp.code());
                        });

                    String lastModified = rsp.header("Last-Modified");
                    client.header("If-Modified-Since", lastModified);
                    client.get(
                        "/m/js/index.js",
                        rsp2 -> {
                          assertEquals(null, rsp2.header("Last-Modified"));
                          assertEquals(304, rsp2.code());
                        });
                  });
              /** Project classpath: */
              client.get(
                  "/cp/foo.js",
                  rsp -> {
                    assertEquals(
                        "application/javascript;charset=utf-8",
                        rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl2, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/cp",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });
              /** File system: */
              client.get(
                  "/",
                  rsp -> {
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl5, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/static",
                  rsp -> {
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl5, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/static/index.html",
                  rsp -> {
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl5, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/static/note",
                  rsp -> {
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                    assertEquals("note.html", rsp.body().string().trim());
                  });
              client.get(
                  "/static/note/index.html",
                  rsp -> {
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                    assertEquals("note.html", rsp.body().string().trim());
                  });
              client.get(
                  "/static/js/index.js",
                  rsp -> {
                    assertEquals(
                        "application/javascript;charset=utf-8",
                        rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl1, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/static/css/styles.css",
                  rsp -> {
                    assertEquals(
                        "text/css;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl4, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/static/../resources/fileupload.js",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });

              /* ROOT: */
              client.get(
                  "/index.html",
                  rsp -> {
                    assertEquals(
                        "text/html;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl5, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/js/index.js",
                  rsp -> {
                    assertEquals(
                        "application/javascript;charset=utf-8",
                        rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl1, rsp.header("Content-Length").toLowerCase());
                  });
              client.get(
                  "/css/styles.css",
                  rsp -> {
                    assertEquals(
                        "text/css;charset=utf-8", rsp.header("Content-Type").toLowerCase());
                    assertEquals(cl4, rsp.header("Content-Length").toLowerCase());
                  });

              client.get(
                  "/jar2/dist/../package.json",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });
              client.get(
                  "/jar/dist/nope.js",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });
              client.get(
                  "/jar/dist",
                  rsp -> {
                    assertEquals(404, rsp.code());
                  });
            });
  }

  @ServerTest
  public void assetSingleFile(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.assets("/asset/cp", "singleroot");
              app.assets("/asset/fs", userdir("src", "test", "resources", "singleroot"));
            })
        .ready(
            client -> {
              client.get(
                  "/asset/cp",
                  rsp -> {
                    assertEquals("abcd", rsp.body().string().trim());
                  });
              client.get(
                  "/asset/fs",
                  rsp -> {
                    assertEquals("abcd", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void services(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              ServiceRegistry services = app.getServices();
              services.put(ServiceKey.key(String.class, "x"), "value");

              app.get("/services", ctx -> app.require(String.class, "x"));
            })
        .ready(
            client -> {
              client.get(
                  "/services",
                  rsp -> {
                    assertEquals("value", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void render(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.install(new JacksonModule());
              app.get("/int", ctx -> ctx.render(1));
              app.get("/bytes", ctx -> ctx.render("bytes".getBytes(StandardCharsets.UTF_8)));
              app.get(
                  "/stream",
                  ctx ->
                      ctx.render(
                          new ByteArrayInputStream("bytes".getBytes(StandardCharsets.UTF_8))));
              app.get("/complex", ctx -> ctx.render(mapOf("k", "v")));
            })
        .ready(
            client -> {
              client.get(
                  "/int",
                  rsp -> {
                    assertEquals("1", rsp.body().string());
                  });
              client.get(
                  "/bytes",
                  rsp -> {
                    assertEquals("bytes", rsp.body().string());
                  });
              client.get(
                  "/stream",
                  rsp -> {
                    assertEquals("bytes", rsp.body().string());
                  });
              client.get(
                  "/complex",
                  rsp -> {
                    assertEquals("{\"k\":\"v\"}", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void flashScope(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/flash", req -> req.flash());

              app.post(
                  "/flash",
                  ctx -> {
                    ctx.flash().put("success", "Thank you!");
                    return ctx.sendRedirect("/flash");
                  });

              app.post("/untouch", Context::getRequestPath);

              app.get(
                  "/error",
                  ctx -> {
                    boolean noreset = !ctx.query("noreset").isMissing();
                    if (noreset) {
                      ctx.setResetHeadersOnError(false);
                    }
                    ctx.flash().put("error", "error");
                    return ctx.query("error").value();
                  });

              app.error(
                  (ctx, cause, statusCode) -> {
                    ctx.setResponseCode(statusCode).send(cause.getMessage());
                  });
            })
        .dontFollowRedirects()
        .ready(
            client -> {
              client.post(
                  "/flash",
                  rsp -> {
                    assertEquals(302, rsp.code());
                    String setCookie = rsp.header("Set-Cookie");
                    assertEquals("jooby.flash=success=Thank+you%21;Path=/;HttpOnly", setCookie);

                    client
                        .header("Cookie", setCookie)
                        .get(
                            "/flash",
                            next -> {
                              assertEquals(200, next.code());
                              assertEquals("{success=Thank you!}", next.body().string());
                              String clearCookie = next.header("Set-Cookie");
                              assertTrue(
                                  clearCookie.startsWith("jooby.flash=;Path=/;HttpOnly;Max-Age=0;"),
                                  clearCookie);
                            });
                  });

              client.get(
                  "/flash",
                  rsp -> {
                    assertEquals("{}", rsp.body().string());
                    assertNull(rsp.header("Set-Cookie"));
                  });

              client.get("/untouch", rsp -> assertNull(rsp.header("Set-Cookie")));

              client.get("/error", rsp -> assertNull(rsp.header("Set-Cookie")));

              client.get("/error?noreset=true", rsp -> assertNotNull(rsp.header("Set-Cookie")));
            });
  }

  @ServerTest
  public void customFlashScope(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.setContextPath("/custom");
              app.setFlashCookie(new Cookie("f").setHttpOnly(true));

              app.get(
                  "/flash",
                  ctx -> {
                    ctx.flash().put("success", "Thank you!");
                    return ctx.flash();
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/custom/flash",
                  rsp -> {
                    assertEquals(200, rsp.code());
                    String setCookie = rsp.header("Set-Cookie");
                    assertEquals("f=success=Thank+you%21;Path=/custom;HttpOnly", setCookie);
                  });
            });

    runner
        .define(
            app -> {
              app.setContextPath("/custom");
              app.getFlashCookie().setName("f").setSameSite(SameSite.LAX);

              app.get(
                  "/flash",
                  ctx -> {
                    ctx.flash().put("success", "Thank you!");
                    return ctx.flash();
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/custom/flash",
                  rsp -> {
                    assertEquals(200, rsp.code());
                    String setCookie = rsp.header("Set-Cookie");
                    assertEquals(
                        "f=success=Thank+you%21;Path=/custom;SameSite=Lax;HttpOnly", setCookie);
                  });
            });

    runner
        .define(
            app -> {
              app.setContextPath("/custom");
              app.setFlashCookie(new Cookie("f").setSecure(true));

              app.get(
                  "/flash",
                  ctx -> {
                    ctx.flash().put("success", "Thank you!");
                    return ctx.flash();
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/custom/flash",
                  rsp -> {
                    assertEquals(200, rsp.code());
                    String setCookie = rsp.header("Set-Cookie");
                    assertEquals("f=success=Thank+you%21;Path=/custom;Secure", setCookie);
                  });
            });
  }

  @ServerTest
  public void flashScopeKeep(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/flash",
                  ctx -> {
                    FlashMap flash = ctx.flash();
                    flash.put("foo", "bar");
                    return ctx.sendRedirect("/flash/1");
                  });

              app.get(
                  "/flash/1",
                  ctx -> {
                    FlashMap flash = ctx.flash();
                    flash.keep();
                    return ctx.sendRedirect("/flash/" + flash.get("foo"));
                  });

              app.get(
                  "/flash/bar",
                  ctx -> {
                    return ctx.flash("foo").value() + ctx.flash().size();
                  });
              app.error(
                  (ctx, cause, statusCode) -> {
                    ctx.setResponseCode(statusCode).send(cause.getMessage());
                  });
            })
        .dontFollowRedirects()
        .ready(
            client -> {
              client.get(
                  "/flash",
                  rsp -> {
                    assertEquals(302, rsp.code());
                    client
                        .header("Cookie", rsp.header("Set-Cookie"))
                        .get(
                            rsp.header("Location"),
                            r1 -> {
                              assertEquals(302, r1.code());
                              assertEquals("/flash/bar", r1.header("Location"));

                              client
                                  .header("Cookie", r1.header("Set-Cookie"))
                                  .get(
                                      r1.header("Location"),
                                      r2 -> {
                                        assertEquals(200, r2.code());
                                        assertEquals("bar1", r2.body().string());

                                        String clearCookie = r2.header("Set-Cookie");
                                        assertTrue(
                                            clearCookie.startsWith(
                                                "jooby.flash=;Path=/;HttpOnly;Max-Age=0;"),
                                            clearCookie);
                                      });
                            });
                  });
            });
  }

  @ServerTest
  public void accessToFlashScopeFromTemplateEngine(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.install(new HandlebarsModule());
              app.get("/home", ctx -> ModelAndView.map("flash.hbs"));
            })
        .dontFollowRedirects()
        .ready(
            client -> {
              client.header("Cookie", "jooby.flash=name=Flash");
              client.get(
                  "/home",
                  rsp -> {
                    assertEquals("Hello Flash!", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest(executionMode = EVENT_LOOP)
  @DisplayName("Context detaches when running in event-loop")
  public void detachOnEventLoop(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/detach",
                  ctx -> {
                    CompletableFuture.runAsync(
                        () -> {
                          ctx.send(
                              ctx.getRequestPath()
                                  + ". Non-blocking:"
                                  + ctx.getRoute().isNonBlocking());
                        });
                    return ctx;
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/detach",
                  rsp -> {
                    assertEquals("/detach. Non-blocking:true", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void rawValue(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.post(
                  "/body",
                  ctx -> {
                    return ctx.body().value("");
                  });

              app.post(
                  "/form",
                  ctx -> {
                    return ctx.form().value();
                  });

              app.post(
                  "/multipart",
                  ctx -> {
                    return ctx.form().value();
                  });
            })
        .ready(
            client -> {
              client.post(
                  "/body",
                  rsp -> {
                    assertEquals("", rsp.body().string());
                  });

              client.post(
                  "/body",
                  create("{\"foo\": \"bar\"}", json),
                  rsp -> {
                    assertEquals("{\"foo\": \"bar\"}", rsp.body().string());
                  });

              client.post(
                  "/form",
                  new FormBody.Builder().add("a", "a b").add("c", "d").add("c", "e").build(),
                  rsp -> {
                    assertEquals("a=a b&c=d&c=e", rsp.body().string());
                  });

              client.post(
                  "/multipart",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart("a", "b")
                      .addFormDataPart(
                          "f", "19kb.txt", create(_19kb, MediaType.parse("text/plain")))
                      .build(),
                  rsp -> {
                    assertEquals("a=b", rsp.body().string());
                  });
            });
  }

  @ServerTest(executionMode = {EVENT_LOOP, WORKER})
  public void sendByteArray(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/bytes",
                  ctx -> {
                    return ctx.getRequestPath().getBytes(StandardCharsets.UTF_8);
                  });
              app.get(
                  "/inline",
                  ctx -> {
                    return new byte[] {(byte) 'h', (byte) 'e'};
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/bytes",
                  rsp -> {
                    assertEquals("/bytes", rsp.body().string());
                  });
              client.get(
                  "/inline",
                  rsp -> {
                    assertEquals("he", rsp.body().string());
                  });
            });
  }

  @ServerTest(executionMode = {EVENT_LOOP, WORKER})
  public void sideEffectVsFunctional(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/string",
                  ctx -> {
                    ctx.send("side-effects");
                    return "ignored";
                  });

              app.get(
                  "/bytes",
                  ctx -> {
                    ctx.send("side-effects");
                    return new byte[] {1, 3, 4};
                  });

              app.get(
                  "/code",
                  ctx -> {
                    ctx.send(StatusCode.CREATED);
                    return "ignored";
                  });

              app.before(
                  ctx -> {
                    ctx.send(StatusCode.CREATED);
                  });

              app.get(
                  "/filter",
                  ctx -> {
                    throw new IllegalStateException("Should never gets here");
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/string",
                  rsp -> {
                    assertEquals("side-effects", rsp.body().string());
                  });

              client.get(
                  "/bytes",
                  rsp -> {
                    assertEquals("side-effects", rsp.body().string());
                  });

              client.get(
                  "/code",
                  rsp -> {
                    assertEquals("", rsp.body().string());
                    assertEquals(StatusCode.CREATED.value(), rsp.code());
                  });

              client.get(
                  "/filter",
                  rsp -> {
                    assertEquals("", rsp.body().string());
                    assertEquals(StatusCode.CREATED.value(), rsp.code());
                  });
            });
  }

  @ServerTest
  public void cors(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.use(new CorsHandler());

              app.get("/greeting", ctx -> "Hello " + ctx.query("name").value("World") + "!");
            })
        .ready(
            client -> {
              client
                  .header("Origin", "http://foo.com")
                  .get(
                      "/greeting",
                      rsp -> {
                        assertEquals("Hello World!", rsp.body().string());
                        assertEquals("http://foo.com", rsp.header("Access-Control-Allow-Origin"));
                        assertEquals("true", rsp.header("Access-Control-Allow-Credentials"));
                      });

              client.get(
                  "/greeting",
                  rsp -> {
                    assertEquals("Hello World!", rsp.body().string());
                    assertEquals(null, rsp.header("Access-Control-Allow-Origin"));
                    assertEquals(null, rsp.header("Access-Control-Allow-Credentials"));
                  });

              /** null chrome local file: */
              client
                  .header("Origin", "null")
                  .get(
                      "/greeting",
                      rsp -> {
                        assertEquals("Hello World!", rsp.body().string());
                        assertEquals("*", rsp.header("Access-Control-Allow-Origin"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Credentials"));
                      });

              // preflight
              client
                  .header("Origin", "http://foo.com")
                  .header("Access-Control-Request-Method", "GET")
                  .options(
                      "/greeting",
                      rsp -> {
                        assertEquals("", rsp.body().string());
                        assertEquals(200, rsp.code());
                        assertEquals("http://foo.com", rsp.header("Access-Control-Allow-Origin"));
                        assertEquals("true", rsp.header("Access-Control-Allow-Credentials"));
                        assertEquals("GET,POST", rsp.header("Access-Control-Allow-Methods"));
                        assertEquals(
                            "X-Requested-With,Content-Type,Accept,Origin",
                            rsp.header("Access-Control-Allow-Headers"));
                        assertEquals("1800", rsp.header("Access-Control-Max-Age"));
                      });

              // preflight without access-control-request-method => normal OPTIONS call
              client
                  .header("Origin", "http://foo.com")
                  .options(
                      "/greeting",
                      rsp -> {
                        assertEquals("", rsp.body().string());
                        assertEquals(StatusCode.OK_CODE, rsp.code());
                        assertEquals("GET,OPTIONS", rsp.header("Allow"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Origin"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Credentials"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Methods"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Headers"));
                        assertEquals(null, rsp.header("Access-Control-Max-Age"));
                      });

              client
                  .header("Origin", "http://foo.com")
                  .header("Access-Control-Request-Method", "PUT")
                  .options(
                      "/greeting",
                      rsp -> {
                        assertEquals("", rsp.body().string());
                        assertEquals(StatusCode.FORBIDDEN_CODE, rsp.code());
                        assertEquals(null, rsp.header("Access-Control-Allow-Origin"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Credentials"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Methods"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Headers"));
                        assertEquals(null, rsp.header("Access-Control-Max-Age"));
                      });

              client
                  .header("Origin", "http://foo.com")
                  .header("Access-Control-Request-Method", "GET")
                  .header("Access-Control-Request-Headers", "Custom-Header")
                  .options(
                      "/greeting",
                      rsp -> {
                        assertEquals("", rsp.body().string());
                        assertEquals(StatusCode.FORBIDDEN_CODE, rsp.code());
                        assertEquals(null, rsp.header("Access-Control-Allow-Origin"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Credentials"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Methods"));
                        assertEquals(null, rsp.header("Access-Control-Allow-Headers"));
                        assertEquals(null, rsp.header("Access-Control-Max-Age"));
                      });
            });
  }

  @ServerTest
  public void options(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/foo", Context::getRequestPath);

              app.post("/foo", Context::getRequestPath);

              app.get("/foo/{id}", Context::getRequestPath);

              app.patch("/foo/{id}", Context::getRequestPath);
            })
        .ready(
            client -> {
              Function<String, Set<String>> toSet =
                  value -> Stream.of(value.split("\\s*,\\s*")).collect(Collectors.toSet());
              client.options(
                  "/foo",
                  rsp -> {
                    assertEquals(
                        new HashSet<>(Arrays.asList("GET", "POST")),
                        toSet.apply(rsp.header("Allow")));
                    assertEquals(StatusCode.OK.value(), rsp.code());
                  });

              client.options(
                  "/foo/1",
                  rsp -> {
                    assertEquals(
                        new HashSet<>(Arrays.asList("GET", "PATCH")),
                        toSet.apply(rsp.header("Allow")));
                    assertEquals(StatusCode.OK.value(), rsp.code());
                  });
            });
  }

  @ServerTest
  public void trace(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.use(new TraceHandler());

              app.get("/foo", Context::getRequestPath);
            })
        .ready(
            client -> {
              client.trace(
                  "/foo",
                  rsp -> {
                    assertEquals(StatusCode.OK.value(), rsp.code());
                    assertEquals("message/http", rsp.header("Content-Type"));
                    assertTrue(rsp.body().string().startsWith("TRACE /foo HTTP/1.1"));
                  });

              client.get(
                  "/foo",
                  rsp -> {
                    assertEquals(StatusCode.OK.value(), rsp.code());
                    assertEquals("/foo", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void head(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.install(new JacksonModule());
              app.use(new HeadHandler());

              app.get("/fn", ctx -> "string");

              app.get("/side-effects", ctx -> ctx.send("side-effects"));

              app.get("/json", ctx -> new HashMap<>());

              app.get("/render", ctx -> ctx.render(new HashMap<>()));

              app.assets(
                  "/?*",
                  new AssetHandler(
                      "fallback.html", AssetSource.create(app.getClassLoader(), "/www")));
            })
        .ready(
            client -> {
              client.head(
                  "/fn",
                  rsp -> {
                    assertEquals("6", rsp.header("Content-Length"));
                    assertEquals("", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });

              client.head(
                  "/json",
                  rsp -> {
                    assertEquals("2", rsp.header("Content-Length"));
                    assertEquals("", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });

              client.head(
                  "/side-effects",
                  rsp -> {
                    assertEquals(
                        Integer.toString("side-effects".length()), rsp.header("Content-Length"));
                    assertEquals("", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });

              client.head(
                  "/render",
                  rsp -> {
                    assertEquals("2", rsp.header("Content-Length"));
                    assertEquals("", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });

              String cl =
                  String.valueOf(
                      getClass().getResource("/www/foo.js").openConnection().getContentLength());
              client.head(
                  "/foo.js",
                  rsp -> {
                    assertEquals(cl, rsp.header("Content-Length"));
                    assertEquals(
                        "application/javascript;charset=utf-8",
                        rsp.header("Content-Type").toLowerCase());
                    assertNotNull(rsp.header("ETag"));
                    assertNotNull(rsp.header("Last-Modified"));
                    assertEquals("", rsp.body().string());
                    assertEquals(200, rsp.code());
                  });
            });
  }

  @ServerTest
  public void beanConverter(ServerTestRunner runner) {
    String myValueClassName = MyValue.class.getName();
    runner
        .define(
            app -> {
              var factory = app.getValueFactory();
              factory.put(MyValue.class, new MyValueBeanConverter());

              app.get("/", ctx -> ctx.query(MyValue.class));

              app.get("/error", ctx -> ctx.query("string").to(MyValue.class));

              app.post("/", ctx -> ctx.form(MyValue.class));
            })
        .ready(
            client -> {
              client.header("Accept", "text/plain");
              client.get(
                  "/error?string=value",
                  rsp -> {
                    assertEquals(
                        "GET /error 400 Bad Request\n" + "Missing value: 'string.string'",
                        rsp.body().string());
                  });

              //              client.get(
              //                  "/?string=value",
              //                  rsp -> {
              //                    assertEquals("value", rsp.body().string());
              //                  });
              //
              //              client.post(
              //                  "/",
              //                  new FormBody.Builder().add("string", "form").build(),
              //                  rsp -> {
              //                    assertEquals("form", rsp.body().string());
              //                  });
            });
  }

  @ServerTest
  public void byteArrayResponse(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/bytearray",
                  ctx -> {
                    return ctx.send(partition(_19kb.getBytes(StandardCharsets.UTF_8), 1536));
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/bytearray",
                  rsp -> {
                    assertEquals(_19kb, rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void requestUrl(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.setRouterOptions(new RouterOptions().setTrustProxy(true));

              app.get("/{path}", ctx -> ctx.getRequestURL());
            })
        .ready(
            client -> {
              client.get(
                  "/somepath",
                  rsp -> {
                    assertEquals(
                        "http://localhost:" + client.getPort() + "/somepath", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "myhost");
              client.get(
                  "/somepath",
                  rsp -> {
                    assertEquals("http://myhost/somepath", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "myhost");
              client.header("X-Forwarded-Proto", "https");
              client.get(
                  "/somepath?useProxy=true",
                  rsp -> {
                    assertEquals("https://myhost/somepath?useProxy=true", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "myhost:80");
              client.get(
                  "/somepath?useProxy=true",
                  rsp -> {
                    assertEquals("http://myhost/somepath?useProxy=true", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "myhost:90");
              client.get(
                  "/somepath?useProxy=true",
                  rsp -> {
                    assertEquals("http://myhost:90/somepath?useProxy=true", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "first,second");
              client.get(
                  "/somepath?useProxy=true",
                  rsp -> {
                    assertEquals("http://first/somepath?useProxy=true", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void requestUrlWithContextPath(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.setRouterOptions(new RouterOptions().setTrustProxy(true));
              app.setContextPath("/x");
              app.get("/{path}", ctx -> ctx.getRequestURL());
            })
        .ready(
            client -> {
              client.get(
                  "/x/somepath",
                  rsp -> {
                    assertEquals(
                        "http://localhost:" + client.getPort() + "/x/somepath",
                        rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "myhost");
              client.get(
                  "/x/somepath",
                  rsp -> {
                    assertEquals("http://myhost/x/somepath", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "myhost");
              client.header("X-Forwarded-Proto", "https");
              client.get(
                  "/x/somepath?useProxy=true",
                  rsp -> {
                    assertEquals("https://myhost/x/somepath?useProxy=true", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "myhost:80");
              client.get(
                  "/x/somepath?useProxy=true",
                  rsp -> {
                    assertEquals("http://myhost/x/somepath?useProxy=true", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "myhost:90");
              client.get(
                  "/x/somepath?useProxy=true",
                  rsp -> {
                    assertEquals("http://myhost:90/x/somepath?useProxy=true", rsp.body().string());
                  });
              client.header("X-Forwarded-Host", "first,second");
              client.get(
                  "/x/somepath?useProxy=true",
                  rsp -> {
                    assertEquals("http://first/x/somepath?useProxy=true", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void shouldAccessToWebVariables(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.use(new WebVariables());

              app.get(
                  "/webvars",
                  ctx ->
                      Arrays.asList(
                          ctx.getAttribute("contextPath"),
                          ctx.getAttribute("path"),
                          ctx.getAttribute("user")));
            })
        .ready(
            client -> {
              client.get(
                  "/webvars",
                  rsp -> {
                    assertEquals("[, /webvars, null]", rsp.body().string().trim());
                  });
            });

    runner
        .define(
            app -> {
              app.setContextPath("/app");

              app.use(new WebVariables());

              app.get(
                  "/webvars",
                  ctx ->
                      Arrays.asList(
                          ctx.getAttribute("contextPath"),
                          ctx.getAttribute("path"),
                          ctx.getAttribute("user")));
            })
        .ready(
            client -> {
              client.get(
                  "/app/webvars",
                  rsp -> {
                    assertEquals("[/app, /app/webvars, null]", rsp.body().string().trim());
                  });
            });

    runner
        .define(
            app -> {
              app.use(new WebVariables("scope"));

              app.get(
                  "/webvars",
                  ctx ->
                      Arrays.asList(
                          ctx.getAttribute("scope.contextPath"),
                          ctx.getAttribute("scope.path"),
                          ctx.getAttribute("scope.user")));
            })
        .ready(
            client -> {
              client.get(
                  "/webvars",
                  rsp -> {
                    assertEquals("[, /webvars, null]", rsp.body().string().trim());
                  });
            });
  }

  @ServerTest
  public void errorOnParsingFormUrlEncoded(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.install(new JacksonModule());

              app.post(
                  "/",
                  ctx -> {
                    return ctx.body(Map.class);
                  });

              app.error(
                  StatusCode.UNSUPPORTED_MEDIA_TYPE,
                  (ctx, cause, status) -> {
                    ctx.setResponseCode(status).send(cause.getMessage());
                  });
            })
        .ready(
            client -> {
              client.post(
                  "/",
                  new FormBody.Builder().add("foo", "bar").build(),
                  rsp -> {
                    assertEquals("application/x-www-form-urlencoded", rsp.body().string());
                    assertEquals(StatusCode.UNSUPPORTED_MEDIA_TYPE_CODE, rsp.code());
                  });
            });
  }

  @ServerTest
  public void accessLog(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.use(new AccessLogHandler().extended().log(app.getLog()::debug));

              app.get("/fn", Context::getRequestPath);

              app.get(
                  "/stream",
                  ctx -> {
                    return ctx.responseStream(
                        text,
                        out -> {
                          IOUtils.copyLarge(
                              new ByteArrayInputStream(_19kb.getBytes(StandardCharsets.UTF_8)),
                              out);
                        });
                  });

              app.get(
                  "/status",
                  ctx -> ctx.setResponseCode(StatusCode.CREATED).send(ctx.getRequestPath()));

              app.get("/send-status", ctx -> ctx.send(StatusCode.CREATED));
            })
        .ready(
            client -> {
              client.get(
                  "/fn",
                  rsp -> {
                    assertEquals(3L, rsp.body().contentLength());
                    assertEquals("/fn", rsp.body().string());
                  });

              client.get(
                  "/stream",
                  rsp -> {
                    assertEquals("chunked", rsp.header("Transfer-Encoding").toLowerCase());
                    assertEquals(_19kb, rsp.body().string());
                  });

              client.get(
                  "/status",
                  rsp -> {
                    assertEquals("/status", rsp.body().string());
                    assertEquals(7L, rsp.body().contentLength());
                  });

              client.get(
                  "/send-status",
                  rsp -> {
                    assertEquals("", rsp.body().string());
                    assertEquals(0, rsp.body().contentLength());
                  });
            });
  }

  @ServerTest
  public void csrf(ServerTestRunner runner) {
    String token = UUID.randomUUID().toString();
    runner
        .define(
            app -> {
              app.before(new CsrfHandler().setTokenGenerator(ctx -> token));

              app.post("/form", Context::getRequestPath);
            })
        .ready(
            client -> {
              client.post(
                  "/form",
                  new FormBody.Builder().add("foo", "bar").build(),
                  rsp -> {
                    assertEquals(StatusCode.FORBIDDEN.value(), rsp.code());
                  });

              client.post(
                  "/form",
                  new FormBody.Builder().add("foo", "bar").add("csrf", token).build(),
                  rsp -> {
                    assertEquals(200, rsp.code());
                  });

              client.post(
                  "/form?csrf=" + token,
                  new FormBody.Builder().add("foo", "bar").build(),
                  rsp -> {
                    assertEquals(200, rsp.code());
                  });

              client.header("csrf", token);
              client.post(
                  "/form",
                  new FormBody.Builder().add("foo", "bar").build(),
                  rsp -> {
                    assertEquals(200, rsp.code());
                  });

              client.header("Cookie", "csrf=" + token);
              client.post(
                  "/form",
                  new FormBody.Builder().add("foo", "bar").build(),
                  rsp -> {
                    assertEquals(200, rsp.code());
                  });
            });
  }

  @ServerTest
  public void forward(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/api/v1/{object}",
                  ctx -> ctx.forward("/api/v1.0/" + ctx.path("object").value()));

              app.get("/api/v1.0/{name}", ctx -> ctx.path("name").value());
            })
        .ready(
            client -> {
              client.get(
                  "/api/v1/pets",
                  rsp -> {
                    assertEquals(200, rsp.code());
                    assertEquals("pets", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void custom404WithTemplateEngine(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.install(new HandlebarsModule());

              app.error(
                  (ctx, cause, code) -> {
                    ctx.render(ModelAndView.map("error.hbs").put("statusCode", code));
                  });
            })
        .ready(
            client -> {
              client.get(
                  "/missing",
                  rsp -> {
                    assertEquals("Not Found (404)", rsp.body().string().trim());
                    assertEquals(404, rsp.code());
                  });
            });
  }

  @ServerTest
  public void rawVsDecodedValues(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/path/{v}", ctx -> ctx.path("v").value());

              app.get("/tail/*", ctx -> ctx.path("*").value());

              app.get("/query", ctx -> ctx.query("v").value());

              app.post("/form", ctx -> ctx.form("v").value());

              app.post("/multipart", ctx -> ctx.form("v").value());
            })
        .ready(
            client -> {
              client.get(
                  "/path/a+b%2f",
                  rsp -> {
                    assertEquals("a+b/", rsp.body().string().trim());
                  });

              client.get(
                  "/tail/a+b%2fbar",
                  rsp -> {
                    assertEquals("a+b/bar", rsp.body().string().trim());
                  });

              client.get(
                  "/query?v=a+b%2f",
                  rsp -> {
                    assertEquals("a b/", rsp.body().string().trim());
                  });

              // put in encoded value, expect urldecode(value)
              client.post(
                  "/form",
                  new FormBody.Builder().addEncoded("v", "a+b%2f").build(),
                  rsp -> {
                    assertEquals("a b/", rsp.body().string());
                  });

              // put in "raw" value, expect it as it is
              client.post(
                  "/form",
                  new FormBody.Builder().add("v", "a+b%2f").build(),
                  rsp -> {
                    assertEquals("a+b%2f", rsp.body().string());
                  });

              // no coding is done, expect it as it is
              client.post(
                  "/multipart",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart("v", "a+b%2f")
                      .build(),
                  rsp -> {
                    assertEquals("a+b%2f", rsp.body().string());
                  });

              // no coding is done, expect it as it is
              client.post(
                  "/multipart",
                  new MultipartBody.Builder()
                      .setType(MultipartBody.FORM)
                      .addFormDataPart("v", "a b/")
                      .build(),
                  rsp -> {
                    assertEquals("a b/", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void recursiveRegexMatch(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get(
                  "/one/{firstId:[a-z0-9-]+}/{secondId:[a-z0-9-]+}/first",
                  ctx -> "/1/" + ctx.path("firstId").value() + "::" + ctx.path("secondId").value());

              app.get(
                  "/one/{firstId:[a-z0-9-_]+}/{secondId:[a-z0-9-_]+}/second",
                  ctx -> "/2/" + ctx.path("firstId").value() + "::" + ctx.path("secondId").value());
            })
        .ready(
            client -> {
              client.get(
                  "/one/hello/peter/first",
                  rsp -> {
                    assertEquals("/1/hello::peter", rsp.body().string());
                  });
              client.get(
                  "/one/hithere/123/second",
                  rsp -> {
                    assertEquals("/2/hithere::123", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void methodNotAllowedWithPathVariables(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/{var}", Context::getRequestPath);
            })
        .ready(
            client -> {
              client.delete(
                  "/foo",
                  rsp -> {
                    assertEquals(405, rsp.code());
                  });

              client.get(
                  "/foo",
                  rsp -> {
                    assertEquals(200, rsp.code());
                  });
            });
  }

  @ServerTest
  public void regexpRoutingShouldIncludeDefaultValueWhenParamIsNotMatched(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/foo-{suffix:[a-z]{2,3}}.json", ctx -> ctx.path("suffix").value());
            })
        .ready(
            client -> {
              client.get(
                  "/foo-abc.json",
                  rsp -> {
                    assertEquals("abc", rsp.body().string());
                  });
            });
  }

  @ServerTest
  public void locales(ServerTestRunner runner) {
    runner
        .define(
            app -> {
              app.get("/locales", Context::locales);
              app.get("/locale", Context::locale);
              app.setLocales(
                  Arrays.asList(
                      new Locale("en"),
                      new Locale("en", "GB"),
                      new Locale("de", "AT"),
                      new Locale("de", "CH"),
                      new Locale("fr"),
                      new Locale("hu")));
            })
        .dontFollowRedirects()
        .ready(
            client -> {
              var toSet =
                  new Function<String, Set<String>>() {

                    @Override
                    public Set<String> apply(String value) {
                      return Splitter.on(',')
                          .omitEmptyStrings()
                          .trimResults()
                          .splitToStream(value.substring(1, value.length() - 1))
                          .collect(Collectors.toSet());
                    }
                  };
              client
                  .header("Accept-Language", "fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5")
                  .get(
                      "/locales",
                      rsp ->
                          assertEquals(
                              Set.of("en", "en_GB", "de_AT", "de_CH", "fr", "hu"),
                              toSet.apply(rsp.body().string())));

              client
                  .header("Accept-Language", "fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7")
                  .get(
                      "/locales",
                      rsp ->
                          assertEquals(
                              Set.of("fr", "en", "en_GB", "de_AT", "de_CH"),
                              toSet.apply(rsp.body().string())));

              client
                  .header("Accept-Language", "fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5")
                  .get("/locale", rsp -> assertEquals("fr", rsp.body().string()));

              client
                  .header("Accept-Language", "de-AT, fr-CH, fr;q=0.9, en;q=0.8, de;q=0.7, *;q=0.5")
                  .get("/locale", rsp -> assertEquals("de_AT", rsp.body().string()));
            });
  }

  private byte[][] partition(byte[] bytes, int size) {
    List<byte[]> result = new ArrayList<>();
    int offset = 0;
    while (offset < bytes.length) {
      int len = Math.min(size, bytes.length - offset);
      byte[] b = new byte[len];
      System.arraycopy(bytes, offset, b, 0, len);
      result.add(b);
      offset += size;
    }
    return result.toArray(new byte[0][0]);
  }

  private static Path userdir(String... segments) {
    Path path = Paths.get(System.getProperty("user.dir"));
    for (String segment : segments) {
      path = path.resolve(segment);
    }
    return path;
  }

  public long transfer(Reader reader, Writer out) throws IOException {
    long transferred = 0;
    char[] buffer = new char[ServerOptions._16KB];
    int nRead;
    while ((nRead = reader.read(buffer, 0, ServerOptions._16KB)) >= 0) {
      out.write(buffer, 0, nRead);
      transferred += nRead;
    }
    return transferred;
  }

  private Map<String, Object> mapOf(String... values) {
    Map<String, Object> hash = new HashMap<>();
    for (int i = 0; i < values.length; i += 2) {
      hash.put(values[i], values[i + 1]);
    }
    return hash;
  }
}
