TarArchiveTests Class — spring-boot Architecture

Source Code

buildpack/spring-boot-buildpack-platform/src/test/java/org/springframework/boot/buildpack/platform/io/TarArchiveTests.java lines 40–94

class TarArchiveTests {

	@TempDir
	@SuppressWarnings("NullAway.Init")
	File tempDir;

	@Test
	void ofWritesTarContent() throws Exception {
		Owner owner = Owner.of(123, 456);
		TarArchive tarArchive = TarArchive.of((content) -> {
			content.directory("/workspace", owner);
			content.directory("/layers", owner);
			content.directory("/cnb", Owner.ROOT);
			content.directory("/cnb/buildpacks", Owner.ROOT);
			content.directory("/platform", Owner.ROOT);
			content.directory("/platform/env", Owner.ROOT);
		});
		ByteArrayOutputStream outputStream = new ByteArrayOutputStream();
		tarArchive.writeTo(outputStream);
		try (TarArchiveInputStream tarStream = new TarArchiveInputStream(
				new ByteArrayInputStream(outputStream.toByteArray()))) {
			List<TarArchiveEntry> entries = new ArrayList<>();
			TarArchiveEntry entry = tarStream.getNextEntry();
			while (entry != null) {
				entries.add(entry);
				entry = tarStream.getNextEntry();
			}
			assertThat(entries).hasSize(6);
			assertThat(entries.get(0).getName()).isEqualTo("/workspace/");
			assertThat(entries.get(0).getLongUserId()).isEqualTo(123);
			assertThat(entries.get(0).getLongGroupId()).isEqualTo(456);
			assertThat(entries.get(2).getName()).isEqualTo("/cnb/");
			assertThat(entries.get(2).getLongUserId()).isZero();
			assertThat(entries.get(2).getLongGroupId()).isZero();
		}
	}

	@Test
	void fromZipFileReturnsZipFileAdapter() throws Exception {
		Owner owner = Owner.of(123, 456);
		File file = new File(this.tempDir, "test.zip");
		writeTestZip(file);
		TarArchive tarArchive = TarArchive.fromZip(file, owner);
		assertThat(tarArchive).isInstanceOf(ZipFileTarArchive.class);
	}

	private void writeTestZip(File file) throws IOException {
		try (ZipArchiveOutputStream zip = new ZipArchiveOutputStream(file)) {
			ZipArchiveEntry dirEntry = new ZipArchiveEntry("spring/");
			zip.putArchiveEntry(dirEntry);
			zip.closeArchiveEntry();
		}
	}

}