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Add unit tests for netty.handler.FramedResponseStreamHandler #1163

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Merged
KostyaSha merged 1 commit into from
Mar 9, 2019
Merged

Add unit tests for netty.handler.FramedResponseStreamHandler #1163

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184 changes: 184 additions & 0 deletions src/test/java/com/github/dockerjava/netty/handler/FramedResponseStreamHandlerTest.java
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package com.github.dockerjava.netty.handler;

import com.github.dockerjava.api.model.Frame;
import com.github.dockerjava.api.async.ResultCallback;
import com.github.dockerjava.netty.handler.FramedResponseStreamHandler;
import java.io.Closeable;
import java.util.ArrayList;
import java.util.List;
import io.netty.buffer.Unpooled;
import io.netty.channel.ChannelHandlerContext;
import org.junit.Test;
import org.mockito.Mockito;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

public class FramedResponseStreamHandlerTest {

public class MockedResponseHandler implements ResultCallback<Frame> {

public List<Frame> frames = new ArrayList<Frame>();
public List<Throwable> exceptions = new ArrayList<Throwable>();

@Override
public void close() {
}

@Override
public void onStart(Closeable closeable) {
}

@Override
public void onNext(Frame object) {
frames.add(object);
}

@Override
public void onError(Throwable throwable) {
exceptions.add(throwable);
}

@Override
public void onComplete() {
}
}


@Test
public void channelRead0emptyHeaderCount() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
byte[] msg = {};

// Act
objectUnderTest.channelRead0(Mockito.mock(ChannelHandlerContext.class), Unpooled.wrappedBuffer(msg));

// Assert result
assertTrue(responseHandler.frames.isEmpty());
}

@Test
public void channelRead0headerTooSmall() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
byte[] msg = {0};

// Act
objectUnderTest.channelRead0(Mockito.mock(ChannelHandlerContext.class), Unpooled.wrappedBuffer(msg));

// Assert result
assertTrue(responseHandler.frames.isEmpty());
}

@Test
public void channelRead0rawStream() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
byte[] msg = {3, 0, 0, 0, 0, 0, 0, 0, 0};

// Act
objectUnderTest.channelRead0(Mockito.mock(ChannelHandlerContext.class), Unpooled.wrappedBuffer(msg));

// Assert result
assertEquals(responseHandler.frames.get(0).toString(), "RAW: ");
}

@Test
public void channelRead0emptyNonRaw() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
byte[] msg = {0, 0, 0, 0, 0, 0, 0, 0, 0};

// Act
objectUnderTest.channelRead0(Mockito.mock(ChannelHandlerContext.class), Unpooled.wrappedBuffer(msg));

// Assert result
assertTrue(responseHandler.frames.isEmpty());
}

@Test
public void channelRead0stdIn() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
byte[] msg = {0, 0, 0, 0, 0, 0, 0, 1, 0};

// Act
objectUnderTest.channelRead0(Mockito.mock(ChannelHandlerContext.class), Unpooled.wrappedBuffer(msg));

// Assert result
assertEquals(responseHandler.frames.get(0).toString(), "STDIN: ");
}

@Test
public void channelRead0stdOut() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
byte[] msg = {1, 0, 0, 0, 0, 0, 0, 1, 0};

// Act
objectUnderTest.channelRead0(Mockito.mock(ChannelHandlerContext.class), Unpooled.wrappedBuffer(msg));

// Assert result
assertEquals(responseHandler.frames.get(0).toString(), "STDOUT: ");
}

@Test
public void channelRead0stdErr() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
byte[] msg = {2, 0, 0, 0, 0, 0, 0, 1, 0};

// Act
objectUnderTest.channelRead0(Mockito.mock(ChannelHandlerContext.class), Unpooled.wrappedBuffer(msg));

// Assert result
assertEquals(responseHandler.frames.get(0).toString(), "STDERR: ");
}

@Test
public void channelRead0largePayload() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
byte[] msg = {1, 0, 0, 0, 0, 0, 0, 1, 0, 2, 0, 0, 0, 0, 0, 0, 2, 0};

// Act
objectUnderTest.channelRead0(Mockito.mock(ChannelHandlerContext.class), Unpooled.wrappedBuffer(msg));

// Assert result
assertEquals(responseHandler.frames.get(0).toString(), "STDOUT: ");
}

@Test
public void exceptionCaught() throws Exception {

// Arrange
final MockedResponseHandler responseHandler = new MockedResponseHandler();
final FramedResponseStreamHandler objectUnderTest = new FramedResponseStreamHandler(responseHandler);
final Exception exception = new Exception();
final Throwable throwable = new Throwable();
throwable.initCause(exception);

// Act
objectUnderTest.exceptionCaught(Mockito.mock(ChannelHandlerContext.class), throwable);

// Assert result
assertEquals(responseHandler.exceptions.get(0).getCause(), exception);
}
}