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| 1 | +package com.baeldung.pathvsfile; |
| 2 | + |
| 3 | +import org.junit.jupiter.api.AfterEach; |
| 4 | +import org.junit.jupiter.api.Test; |
| 5 | + |
| 6 | +import java.io.File; |
| 7 | +import java.io.IOException; |
| 8 | +import java.nio.file.Files; |
| 9 | +import java.nio.file.NoSuchFileException; |
| 10 | +import java.nio.file.Path; |
| 11 | +import java.nio.file.Paths; |
| 12 | + |
| 13 | +import static org.assertj.core.api.Assertions.assertThat; |
| 14 | +import static org.assertj.core.api.Assertions.assertThatThrownBy; |
| 15 | +import static org.assertj.core.api.Assertions.catchThrowable; |
| 16 | + |
| 17 | +public class PathVsFileUnitTest { |
| 18 | + |
| 19 | + @Test |
| 20 | + public void whenCreateFileAndPath_thenShouldPointTheSame() { |
| 21 | + File file = new File("baeldung/tutorial.txt"); |
| 22 | + Path path = Paths.get("baeldung/tutorial.txt"); |
| 23 | + |
| 24 | + assertThat(file.toString()) |
| 25 | + .isEqualTo(path.toString()); |
| 26 | + assertThat(file.toPath()) |
| 27 | + .isEqualTo(path); |
| 28 | + assertThat(path.toFile()) |
| 29 | + .isEqualTo(file); |
| 30 | + assertThat(file) |
| 31 | + .isEqualTo(new File("baeldung", "tutorial.txt")); |
| 32 | + assertThat(path) |
| 33 | + .isEqualTo(Paths.get("baeldung", "tutorial.txt" )) |
| 34 | + .isEqualTo(Paths.get("baeldung").resolve("tutorial.txt")); |
| 35 | + } |
| 36 | + |
| 37 | + @Test |
| 38 | + public void givenNoFile_whenDelete_thenReportError() { |
| 39 | + File file = new File("tutorial.txt"); |
| 40 | + Path path = Paths.get("tutorial.txt"); |
| 41 | + |
| 42 | + assertThat(file.delete()).isFalse(); |
| 43 | + assertThatThrownBy(() -> Files.delete(path)) |
| 44 | + .isInstanceOf(IOException.class) |
| 45 | + .isInstanceOf(NoSuchFileException.class); |
| 46 | + } |
| 47 | + |
| 48 | + @Test |
| 49 | + public void givenExistedFile_whenReadMetadata_thenShouldBeSame() throws IOException { |
| 50 | + File file = new File("tutorial.txt"); |
| 51 | + Path path = Paths.get("tutorial.txt"); |
| 52 | + |
| 53 | + Throwable throwable = catchThrowable(() -> Files.createFile(path)); |
| 54 | + assertThat(throwable) |
| 55 | + .isNull(); |
| 56 | + |
| 57 | + assertThat(file.exists()) |
| 58 | + .isEqualTo(Files.exists(path)); |
| 59 | + assertThat(file.isFile()) |
| 60 | + .isEqualTo(Files.isRegularFile(path)); |
| 61 | + assertThat(file.isDirectory()) |
| 62 | + .isEqualTo(Files.isDirectory(path)); |
| 63 | + assertThat(file.canRead()) |
| 64 | + .isEqualTo(Files.isReadable(path)); |
| 65 | + assertThat(file.canWrite()) |
| 66 | + .isEqualTo(Files.isWritable(path)); |
| 67 | + assertThat(file.canExecute()) |
| 68 | + .isEqualTo(Files.isExecutable(path)); |
| 69 | + assertThat(file.isHidden()) |
| 70 | + .isEqualTo(Files.isHidden(path)); |
| 71 | + } |
| 72 | + |
| 73 | + @Test |
| 74 | + public void givenExistedFile_whenUriPathOperations_thenShouldBeSame() throws IOException { |
| 75 | + File file = new File("tutorial.txt"); |
| 76 | + Path path = Paths.get("tutorial.txt"); |
| 77 | + |
| 78 | + Throwable throwable = catchThrowable(() -> Files.createFile(path)); |
| 79 | + assertThat(throwable) |
| 80 | + .isNull(); |
| 81 | + |
| 82 | + assertThat(file.toURI()) |
| 83 | + .isEqualTo(path.toUri()); |
| 84 | + assertThat(file.getAbsolutePath()) |
| 85 | + .isEqualTo(path.toAbsolutePath().toString()); |
| 86 | + assertThat(file.getCanonicalPath()) |
| 87 | + .isEqualTo(path.toRealPath().toString()) |
| 88 | + .isEqualTo(path.toRealPath().normalize().toString()); |
| 89 | + } |
| 90 | + |
| 91 | + @AfterEach |
| 92 | + public void afterEach() throws IOException { |
| 93 | + Path path = Paths.get("tutorial.txt"); |
| 94 | + if (Files.exists(path)) { |
| 95 | + Files.delete(path); |
| 96 | + } |
| 97 | + } |
| 98 | +} |
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