org.eclipse.jgit.test/tst/org/eclipse/jgit/api/ArchiveCommandTest.java - jgit - Git at Google

 /*
  * Copyright (C) 2014, Shaul Zorea <shaulzorea@gmail.com>
  * and other copyright owners as documented in the project's IP log.
  *
  * This program and the accompanying materials are made available
  * under the terms of the Eclipse Distribution License v1.0 which
  * accompanies this distribution, is reproduced below, and is
  * available at http://www.eclipse.org/org/documents/edl-v10.php
  *
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or
  * without modification, are permitted provided that the following
  * conditions are met:
  *
  * - Redistributions of source code must retain the above copyright
  *   notice, this list of conditions and the following disclaimer.
  *
  * - Redistributions in binary form must reproduce the above
  *   copyright notice, this list of conditions and the following
  *   disclaimer in the documentation and/or other materials provided
  *   with the distribution.
  *
  * - Neither the name of the Eclipse Foundation, Inc. nor the
  *   names of its contributors may be used to endorse or promote
  *   products derived from this software without specific prior
  *   written permission.
  *
  * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
  * CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
  * INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
  * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
  * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
  * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
  * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
  * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
  * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
  * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
  * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
  * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  */
 package org.eclipse.jgit.api;

 import static java.nio.charset.StandardCharsets.UTF_8;
 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertNull;

 import java.beans.Statement;
 import java.io.BufferedInputStream;
 import java.io.File;
 import java.io.FileNotFoundException;
 import java.io.FileOutputStream;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.OutputStream;
 import java.nio.file.Files;
 import java.util.Arrays;
 import java.util.Collections;
 import java.util.HashMap;
 import java.util.List;
 import java.util.Map;

 import org.apache.commons.compress.archivers.ArchiveEntry;
 import org.apache.commons.compress.archivers.ArchiveInputStream;
 import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
 import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
 import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
 import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
 import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
 import org.eclipse.jgit.api.errors.AbortedByHookException;
 import org.eclipse.jgit.api.errors.ConcurrentRefUpdateException;
 import org.eclipse.jgit.api.errors.GitAPIException;
 import org.eclipse.jgit.api.errors.NoFilepatternException;
 import org.eclipse.jgit.api.errors.NoHeadException;
 import org.eclipse.jgit.api.errors.NoMessageException;
 import org.eclipse.jgit.api.errors.UnmergedPathsException;
 import org.eclipse.jgit.api.errors.WrongRepositoryStateException;
 import org.eclipse.jgit.archive.ArchiveFormats;
 import org.eclipse.jgit.errors.AmbiguousObjectException;
 import org.eclipse.jgit.errors.IncorrectObjectTypeException;
 import org.eclipse.jgit.junit.RepositoryTestCase;
 import org.eclipse.jgit.lib.FileMode;
 import org.eclipse.jgit.lib.ObjectId;
 import org.eclipse.jgit.lib.ObjectLoader;
 import org.eclipse.jgit.revwalk.RevCommit;
 import org.eclipse.jgit.util.IO;
 import org.eclipse.jgit.util.StringUtils;
 import org.junit.After;
 import org.junit.Before;
 import org.junit.Test;

 public class ArchiveCommandTest extends RepositoryTestCase {

 	// archives store timestamp with 1 second resolution
 	private static final int WAIT = 2000;
 	private static final String UNEXPECTED_ARCHIVE_SIZE  = "Unexpected archive size";
 	private static final String UNEXPECTED_FILE_CONTENTS = "Unexpected file contents";
 	private static final String UNEXPECTED_TREE_CONTENTS = "Unexpected tree contents";
 	private static final String UNEXPECTED_LAST_MODIFIED =
 			"Unexpected lastModified mocked by MockSystemReader, truncated to 1 second";
 	private static final String UNEXPECTED_DIFFERENT_HASH = "Unexpected different hash";

 	private MockFormat format = null;

 	@Before
 	public void setup() {
 		format = new MockFormat();
 		ArchiveCommand.registerFormat(format.SUFFIXES.get(0), format);
 		ArchiveFormats.registerAll();
 	}

 	@Override
 	@After
 	public void tearDown() {
 		ArchiveCommand.unregisterFormat(format.SUFFIXES.get(0));
 		ArchiveFormats.unregisterAll();
 	}

 	@Test
 	public void archiveHeadAllFiles() throws IOException, GitAPIException {
 		try (Git git = new Git(db)) {
 			createTestContent(git);

 			git.archive().setOutputStream(new MockOutputStream())
 					.setFormat(format.SUFFIXES.get(0))
 					.setTree(git.getRepository().resolve("HEAD")).call();

 			assertEquals(UNEXPECTED_ARCHIVE_SIZE, 2, format.size());
 			assertEquals(UNEXPECTED_FILE_CONTENTS, "content_1_2", format.getByPath("file_1.txt"));
 			assertEquals(UNEXPECTED_FILE_CONTENTS, "content_2_2", format.getByPath("file_2.txt"));
 		}
 	}

 	@Test
 	public void archiveHeadSpecificPath() throws IOException, GitAPIException {
 		try (Git git = new Git(db)) {
 			writeTrashFile("file_1.txt", "content_1_1");
 			git.add().addFilepattern("file_1.txt").call();
 			git.commit().setMessage("create file").call();

 			writeTrashFile("file_1.txt", "content_1_2");
 			String expectedFilePath = "some_directory/file_2.txt";
 			writeTrashFile(expectedFilePath, "content_2_2");
 			git.add().addFilepattern(".").call();
 			git.commit().setMessage("updated file").call();

 			git.archive().setOutputStream(new MockOutputStream())
 					.setFormat(format.SUFFIXES.get(0))
 					.setTree(git.getRepository().resolve("HEAD"))
 					.setPaths(expectedFilePath).call();

 			assertEquals(UNEXPECTED_ARCHIVE_SIZE, 2, format.size());
 			assertEquals(UNEXPECTED_FILE_CONTENTS, "content_2_2", format.getByPath(expectedFilePath));
 			assertNull(UNEXPECTED_TREE_CONTENTS, format.getByPath("some_directory"));
 		}
 	}

 	@Test
 	public void archiveByIdSpecificFile() throws IOException, GitAPIException {
 		try (Git git = new Git(db)) {
 			writeTrashFile("file_1.txt", "content_1_1");
 			git.add().addFilepattern("file_1.txt").call();
 			RevCommit first = git.commit().setMessage("create file").call();

 			writeTrashFile("file_1.txt", "content_1_2");
 			String expectedFilePath = "some_directory/file_2.txt";
 			writeTrashFile(expectedFilePath, "content_2_2");
 			git.add().addFilepattern(".").call();
 			git.commit().setMessage("updated file").call();

 			Map<String, Object> options = new HashMap<>();
 			Integer opt = Integer.valueOf(42);
 			options.put("foo", opt);
 			MockOutputStream out = new MockOutputStream();
 			git.archive().setOutputStream(out)
 					.setFormat(format.SUFFIXES.get(0))
 					.setFormatOptions(options)
 					.setTree(first)
 					.setPaths("file_1.txt").call();

 			assertEquals(opt.intValue(), out.getFoo());
 			assertEquals(UNEXPECTED_ARCHIVE_SIZE, 1, format.size());
 			assertEquals(UNEXPECTED_FILE_CONTENTS, "content_1_1", format.getByPath("file_1.txt"));
 		}
 	}

 	@Test
 	public void archiveByDirectoryPath() throws GitAPIException, IOException {
 		try (Git git = new Git(db)) {
 			writeTrashFile("file_0.txt", "content_0_1");
 			git.add().addFilepattern("file_0.txt").call();
 			git.commit().setMessage("commit_1").call();

 			writeTrashFile("file_0.txt", "content_0_2");
 			String expectedFilePath1 = "some_directory/file_1.txt";
 			writeTrashFile(expectedFilePath1, "content_1_2");
 			String expectedFilePath2 = "some_directory/file_2.txt";
 			writeTrashFile(expectedFilePath2, "content_2_2");
 		        String expectedFilePath3 = "some_directory/nested_directory/file_3.txt";
 			writeTrashFile(expectedFilePath3, "content_3_2");
 			git.add().addFilepattern(".").call();
 			git.commit().setMessage("commit_2").call();
 			git.archive().setOutputStream(new MockOutputStream())
 					.setFormat(format.SUFFIXES.get(0))
 					.setTree(git.getRepository().resolve("HEAD"))
 					.setPaths("some_directory/").call();

 			assertEquals(UNEXPECTED_ARCHIVE_SIZE, 5, format.size());
 			assertEquals(UNEXPECTED_FILE_CONTENTS, "content_1_2", format.getByPath(expectedFilePath1));
 			assertEquals(UNEXPECTED_FILE_CONTENTS, "content_2_2", format.getByPath(expectedFilePath2));
 			assertEquals(UNEXPECTED_FILE_CONTENTS, "content_3_2", format.getByPath(expectedFilePath3));
 			assertNull(UNEXPECTED_TREE_CONTENTS, format.getByPath("some_directory"));
 			assertNull(UNEXPECTED_TREE_CONTENTS, format.getByPath("some_directory/nested_directory"));
 		}
 	}

 	@Test
 	public void archiveHeadAllFilesTarTimestamps() throws Exception {
 		try (Git git = new Git(db)) {
 			createTestContent(git);
 			String fmt = "tar";
 			File archive = new File(getTemporaryDirectory(),
 					"archive." + format);
 			archive(git, archive, fmt);
 			ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

 			try (InputStream fi = Files.newInputStream(archive.toPath());
 					InputStream bi = new BufferedInputStream(fi);
 					ArchiveInputStream o = new TarArchiveInputStream(bi)) {
 				assertEntries(o);
 			}

 			Thread.sleep(WAIT);
 			archive(git, archive, fmt);
 			assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
 					ObjectId.fromRaw(IO.readFully(archive)));
 		}
 	}

 	@Test
 	public void archiveHeadAllFilesTgzTimestamps() throws Exception {
 		try (Git git = new Git(db)) {
 			createTestContent(git);
 			String fmt = "tgz";
 			File archive = new File(getTemporaryDirectory(),
 					"archive." + fmt);
 			archive(git, archive, fmt);
 			ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

 			try (InputStream fi = Files.newInputStream(archive.toPath());
 					InputStream bi = new BufferedInputStream(fi);
 					InputStream gzi = new GzipCompressorInputStream(bi);
 					ArchiveInputStream o = new TarArchiveInputStream(gzi)) {
 				assertEntries(o);
 			}

 			Thread.sleep(WAIT);
 			archive(git, archive, fmt);
 			assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
 					ObjectId.fromRaw(IO.readFully(archive)));
 		}
 	}

 	@Test
 	public void archiveHeadAllFilesTbz2Timestamps() throws Exception {
 		try (Git git = new Git(db)) {
 			createTestContent(git);
 			String fmt = "tbz2";
 			File archive = new File(getTemporaryDirectory(),
 					"archive." + fmt);
 			archive(git, archive, fmt);
 			ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

 			try (InputStream fi = Files.newInputStream(archive.toPath());
 					InputStream bi = new BufferedInputStream(fi);
 					InputStream gzi = new BZip2CompressorInputStream(bi);
 					ArchiveInputStream o = new TarArchiveInputStream(gzi)) {
 				assertEntries(o);
 			}

 			Thread.sleep(WAIT);
 			archive(git, archive, fmt);
 			assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
 					ObjectId.fromRaw(IO.readFully(archive)));
 		}
 	}

 	@Test
 	public void archiveHeadAllFilesTxzTimestamps() throws Exception {
 		try (Git git = new Git(db)) {
 			createTestContent(git);
 			String fmt = "txz";
 			File archive = new File(getTemporaryDirectory(), "archive." + fmt);
 			archive(git, archive, fmt);
 			ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

 			try (InputStream fi = Files.newInputStream(archive.toPath());
 					InputStream bi = new BufferedInputStream(fi);
 					InputStream gzi = new XZCompressorInputStream(bi);
 					ArchiveInputStream o = new TarArchiveInputStream(gzi)) {
 				assertEntries(o);
 			}

 			Thread.sleep(WAIT);
 			archive(git, archive, fmt);
 			assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
 					ObjectId.fromRaw(IO.readFully(archive)));
 		}
 	}

 	@Test
 	public void archiveHeadAllFilesZipTimestamps() throws Exception {
 		try (Git git = new Git(db)) {
 			createTestContent(git);
 			String fmt = "zip";
 			File archive = new File(getTemporaryDirectory(), "archive." + fmt);
 			archive(git, archive, fmt);
 			ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

 			try (InputStream fi = Files.newInputStream(archive.toPath());
 					InputStream bi = new BufferedInputStream(fi);
 					ArchiveInputStream o = new ZipArchiveInputStream(bi)) {
 				assertEntries(o);
 			}

 			Thread.sleep(WAIT);
 			archive(git, archive, fmt);
 			assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
 					ObjectId.fromRaw(IO.readFully(archive)));
 		}
 	}

 	private void createTestContent(Git git) throws IOException, GitAPIException,
 			NoFilepatternException, NoHeadException, NoMessageException,
 			UnmergedPathsException, ConcurrentRefUpdateException,
 			WrongRepositoryStateException, AbortedByHookException {
 		writeTrashFile("file_1.txt", "content_1_1");
 		git.add().addFilepattern("file_1.txt").call();
 		git.commit().setMessage("create file").call();

 		writeTrashFile("file_1.txt", "content_1_2");
 		writeTrashFile("file_2.txt", "content_2_2");
 		git.add().addFilepattern(".").call();
 		git.commit().setMessage("updated file").call();
 	}

 	private static void archive(Git git, File archive, String fmt)
 			throws GitAPIException,
 			FileNotFoundException, AmbiguousObjectException,
 			IncorrectObjectTypeException, IOException {
 		git.archive().setOutputStream(new FileOutputStream(archive))
 				.setFormat(fmt)
 				.setTree(git.getRepository().resolve("HEAD")).call();
 	}

 	private static void assertEntries(ArchiveInputStream o) throws IOException {
 		ArchiveEntry e;
 		int n = 0;
 		while ((e = o.getNextEntry()) != null) {
 			n++;
 			assertEquals(UNEXPECTED_LAST_MODIFIED,
 					(1250379778668L / 1000L) * 1000L,
 					e.getLastModifiedDate().getTime());
 		}
 		assertEquals(UNEXPECTED_ARCHIVE_SIZE, 2, n);
 	}

 	private static class MockFormat
 			implements ArchiveCommand.Format<MockOutputStream> {

 		private Map<String, String> entries = new HashMap<>();

 		private int size() {
 			return entries.size();
 		}

 		private String getByPath(String path) {
 			return entries.get(path);
 		}

 		private final List<String> SUFFIXES = Collections
 				.unmodifiableList(Arrays.asList(".mck"));

 		@Override
 		public MockOutputStream createArchiveOutputStream(OutputStream s)
 				throws IOException {
 			return createArchiveOutputStream(s,
 					Collections.<String, Object> emptyMap());
 		}

 		@Override
 		public MockOutputStream createArchiveOutputStream(OutputStream s,
 				Map<String, Object> o) throws IOException {
 			for (Map.Entry<String, Object> p : o.entrySet()) {
 				try {
 					String methodName = "set"
 							+ StringUtils.capitalize(p.getKey());
 					new Statement(s, methodName, new Object[] { p.getValue() })
 							.execute();
 				} catch (Exception e) {
 					throw new IOException("cannot set option: " + p.getKey(), e);
 				}
 			}
 			return new MockOutputStream();
 		}

 		@Override
 		public void putEntry(MockOutputStream out, ObjectId tree, String path, FileMode mode, ObjectLoader loader) {
 			String content = mode != FileMode.TREE
 					? new String(loader.getBytes(), UTF_8)
 					: null;
 			entries.put(path, content);
 		}

 		@Override
 		public Iterable<String> suffixes() {
 			return SUFFIXES;
 		}
 	}

 	public static class MockOutputStream extends OutputStream {

 		private int foo;

 		public void setFoo(int foo) {
 			this.foo = foo;
 		}

 		public int getFoo() {
 			return foo;
 		}

 		@Override
 		public void write(int b) throws IOException {
 			// Do nothing. for testing purposes.
 		}
 	}
 }
	/*
	* Copyright (C) 2014, Shaul Zorea <shaulzorea@gmail.com>
	* and other copyright owners as documented in the project's IP log.
	*
	* This program and the accompanying materials are made available
	* under the terms of the Eclipse Distribution License v1.0 which
	* accompanies this distribution, is reproduced below, and is
	* available at http://www.eclipse.org/org/documents/edl-v10.php
	*
	* All rights reserved.
	*
	* Redistribution and use in source and binary forms, with or
	* without modification, are permitted provided that the following
	* conditions are met:
	*
	* - Redistributions of source code must retain the above copyright
	* notice, this list of conditions and the following disclaimer.
	*
	* - Redistributions in binary form must reproduce the above
	* copyright notice, this list of conditions and the following
	* disclaimer in the documentation and/or other materials provided
	* with the distribution.
	*
	* - Neither the name of the Eclipse Foundation, Inc. nor the
	* names of its contributors may be used to endorse or promote
	* products derived from this software without specific prior
	* written permission.
	*
	* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
	* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
	* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
	* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
	* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
	* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
	* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
	* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
	* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
	* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
	* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
	* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
	* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
	*/
	package org.eclipse.jgit.api;

	import static java.nio.charset.StandardCharsets.UTF_8;
	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertNull;

	import java.beans.Statement;
	import java.io.BufferedInputStream;
	import java.io.File;
	import java.io.FileNotFoundException;
	import java.io.FileOutputStream;
	import java.io.IOException;
	import java.io.InputStream;
	import java.io.OutputStream;
	import java.nio.file.Files;
	import java.util.Arrays;
	import java.util.Collections;
	import java.util.HashMap;
	import java.util.List;
	import java.util.Map;

	import org.apache.commons.compress.archivers.ArchiveEntry;
	import org.apache.commons.compress.archivers.ArchiveInputStream;
	import org.apache.commons.compress.archivers.tar.TarArchiveInputStream;
	import org.apache.commons.compress.archivers.zip.ZipArchiveInputStream;
	import org.apache.commons.compress.compressors.bzip2.BZip2CompressorInputStream;
	import org.apache.commons.compress.compressors.gzip.GzipCompressorInputStream;
	import org.apache.commons.compress.compressors.xz.XZCompressorInputStream;
	import org.eclipse.jgit.api.errors.AbortedByHookException;
	import org.eclipse.jgit.api.errors.ConcurrentRefUpdateException;
	import org.eclipse.jgit.api.errors.GitAPIException;
	import org.eclipse.jgit.api.errors.NoFilepatternException;
	import org.eclipse.jgit.api.errors.NoHeadException;
	import org.eclipse.jgit.api.errors.NoMessageException;
	import org.eclipse.jgit.api.errors.UnmergedPathsException;
	import org.eclipse.jgit.api.errors.WrongRepositoryStateException;
	import org.eclipse.jgit.archive.ArchiveFormats;
	import org.eclipse.jgit.errors.AmbiguousObjectException;
	import org.eclipse.jgit.errors.IncorrectObjectTypeException;
	import org.eclipse.jgit.junit.RepositoryTestCase;
	import org.eclipse.jgit.lib.FileMode;
	import org.eclipse.jgit.lib.ObjectId;
	import org.eclipse.jgit.lib.ObjectLoader;
	import org.eclipse.jgit.revwalk.RevCommit;
	import org.eclipse.jgit.util.IO;
	import org.eclipse.jgit.util.StringUtils;
	import org.junit.After;
	import org.junit.Before;
	import org.junit.Test;

	public class ArchiveCommandTest extends RepositoryTestCase {

	// archives store timestamp with 1 second resolution
	private static final int WAIT = 2000;
	private static final String UNEXPECTED_ARCHIVE_SIZE = "Unexpected archive size";
	private static final String UNEXPECTED_FILE_CONTENTS = "Unexpected file contents";
	private static final String UNEXPECTED_TREE_CONTENTS = "Unexpected tree contents";
	private static final String UNEXPECTED_LAST_MODIFIED =
	"Unexpected lastModified mocked by MockSystemReader, truncated to 1 second";
	private static final String UNEXPECTED_DIFFERENT_HASH = "Unexpected different hash";

	private MockFormat format = null;

	@Before
	public void setup() {
	format = new MockFormat();
	ArchiveCommand.registerFormat(format.SUFFIXES.get(0), format);
	ArchiveFormats.registerAll();
	}

	@Override
	@After
	public void tearDown() {
	ArchiveCommand.unregisterFormat(format.SUFFIXES.get(0));
	ArchiveFormats.unregisterAll();
	}

	@Test
	public void archiveHeadAllFiles() throws IOException, GitAPIException {
	try (Git git = new Git(db)) {
	createTestContent(git);

	git.archive().setOutputStream(new MockOutputStream())
	.setFormat(format.SUFFIXES.get(0))
	.setTree(git.getRepository().resolve("HEAD")).call();

	assertEquals(UNEXPECTED_ARCHIVE_SIZE, 2, format.size());
	assertEquals(UNEXPECTED_FILE_CONTENTS, "content_1_2", format.getByPath("file_1.txt"));
	assertEquals(UNEXPECTED_FILE_CONTENTS, "content_2_2", format.getByPath("file_2.txt"));
	}
	}

	@Test
	public void archiveHeadSpecificPath() throws IOException, GitAPIException {
	try (Git git = new Git(db)) {
	writeTrashFile("file_1.txt", "content_1_1");
	git.add().addFilepattern("file_1.txt").call();
	git.commit().setMessage("create file").call();

	writeTrashFile("file_1.txt", "content_1_2");
	String expectedFilePath = "some_directory/file_2.txt";
	writeTrashFile(expectedFilePath, "content_2_2");
	git.add().addFilepattern(".").call();
	git.commit().setMessage("updated file").call();

	git.archive().setOutputStream(new MockOutputStream())
	.setFormat(format.SUFFIXES.get(0))
	.setTree(git.getRepository().resolve("HEAD"))
	.setPaths(expectedFilePath).call();

	assertEquals(UNEXPECTED_ARCHIVE_SIZE, 2, format.size());
	assertEquals(UNEXPECTED_FILE_CONTENTS, "content_2_2", format.getByPath(expectedFilePath));
	assertNull(UNEXPECTED_TREE_CONTENTS, format.getByPath("some_directory"));
	}
	}

	@Test
	public void archiveByIdSpecificFile() throws IOException, GitAPIException {
	try (Git git = new Git(db)) {
	writeTrashFile("file_1.txt", "content_1_1");
	git.add().addFilepattern("file_1.txt").call();
	RevCommit first = git.commit().setMessage("create file").call();

	writeTrashFile("file_1.txt", "content_1_2");
	String expectedFilePath = "some_directory/file_2.txt";
	writeTrashFile(expectedFilePath, "content_2_2");
	git.add().addFilepattern(".").call();
	git.commit().setMessage("updated file").call();

	Map<String, Object> options = new HashMap<>();
	Integer opt = Integer.valueOf(42);
	options.put("foo", opt);
	MockOutputStream out = new MockOutputStream();
	git.archive().setOutputStream(out)
	.setFormat(format.SUFFIXES.get(0))
	.setFormatOptions(options)
	.setTree(first)
	.setPaths("file_1.txt").call();

	assertEquals(opt.intValue(), out.getFoo());
	assertEquals(UNEXPECTED_ARCHIVE_SIZE, 1, format.size());
	assertEquals(UNEXPECTED_FILE_CONTENTS, "content_1_1", format.getByPath("file_1.txt"));
	}
	}

	@Test
	public void archiveByDirectoryPath() throws GitAPIException, IOException {
	try (Git git = new Git(db)) {
	writeTrashFile("file_0.txt", "content_0_1");
	git.add().addFilepattern("file_0.txt").call();
	git.commit().setMessage("commit_1").call();

	writeTrashFile("file_0.txt", "content_0_2");
	String expectedFilePath1 = "some_directory/file_1.txt";
	writeTrashFile(expectedFilePath1, "content_1_2");
	String expectedFilePath2 = "some_directory/file_2.txt";
	writeTrashFile(expectedFilePath2, "content_2_2");
	String expectedFilePath3 = "some_directory/nested_directory/file_3.txt";
	writeTrashFile(expectedFilePath3, "content_3_2");
	git.add().addFilepattern(".").call();
	git.commit().setMessage("commit_2").call();
	git.archive().setOutputStream(new MockOutputStream())
	.setFormat(format.SUFFIXES.get(0))
	.setTree(git.getRepository().resolve("HEAD"))
	.setPaths("some_directory/").call();

	assertEquals(UNEXPECTED_ARCHIVE_SIZE, 5, format.size());
	assertEquals(UNEXPECTED_FILE_CONTENTS, "content_1_2", format.getByPath(expectedFilePath1));
	assertEquals(UNEXPECTED_FILE_CONTENTS, "content_2_2", format.getByPath(expectedFilePath2));
	assertEquals(UNEXPECTED_FILE_CONTENTS, "content_3_2", format.getByPath(expectedFilePath3));
	assertNull(UNEXPECTED_TREE_CONTENTS, format.getByPath("some_directory"));
	assertNull(UNEXPECTED_TREE_CONTENTS, format.getByPath("some_directory/nested_directory"));
	}
	}

	@Test
	public void archiveHeadAllFilesTarTimestamps() throws Exception {
	try (Git git = new Git(db)) {
	createTestContent(git);
	String fmt = "tar";
	File archive = new File(getTemporaryDirectory(),
	"archive." + format);
	archive(git, archive, fmt);
	ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

	try (InputStream fi = Files.newInputStream(archive.toPath());
	InputStream bi = new BufferedInputStream(fi);
	ArchiveInputStream o = new TarArchiveInputStream(bi)) {
	assertEntries(o);
	}

	Thread.sleep(WAIT);
	archive(git, archive, fmt);
	assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
	ObjectId.fromRaw(IO.readFully(archive)));
	}
	}

	@Test
	public void archiveHeadAllFilesTgzTimestamps() throws Exception {
	try (Git git = new Git(db)) {
	createTestContent(git);
	String fmt = "tgz";
	File archive = new File(getTemporaryDirectory(),
	"archive." + fmt);
	archive(git, archive, fmt);
	ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

	try (InputStream fi = Files.newInputStream(archive.toPath());
	InputStream bi = new BufferedInputStream(fi);
	InputStream gzi = new GzipCompressorInputStream(bi);
	ArchiveInputStream o = new TarArchiveInputStream(gzi)) {
	assertEntries(o);
	}

	Thread.sleep(WAIT);
	archive(git, archive, fmt);
	assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
	ObjectId.fromRaw(IO.readFully(archive)));
	}
	}

	@Test
	public void archiveHeadAllFilesTbz2Timestamps() throws Exception {
	try (Git git = new Git(db)) {
	createTestContent(git);
	String fmt = "tbz2";
	File archive = new File(getTemporaryDirectory(),
	"archive." + fmt);
	archive(git, archive, fmt);
	ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

	try (InputStream fi = Files.newInputStream(archive.toPath());
	InputStream bi = new BufferedInputStream(fi);
	InputStream gzi = new BZip2CompressorInputStream(bi);
	ArchiveInputStream o = new TarArchiveInputStream(gzi)) {
	assertEntries(o);
	}

	Thread.sleep(WAIT);
	archive(git, archive, fmt);
	assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
	ObjectId.fromRaw(IO.readFully(archive)));
	}
	}

	@Test
	public void archiveHeadAllFilesTxzTimestamps() throws Exception {
	try (Git git = new Git(db)) {
	createTestContent(git);
	String fmt = "txz";
	File archive = new File(getTemporaryDirectory(), "archive." + fmt);
	archive(git, archive, fmt);
	ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

	try (InputStream fi = Files.newInputStream(archive.toPath());
	InputStream bi = new BufferedInputStream(fi);
	InputStream gzi = new XZCompressorInputStream(bi);
	ArchiveInputStream o = new TarArchiveInputStream(gzi)) {
	assertEntries(o);
	}

	Thread.sleep(WAIT);
	archive(git, archive, fmt);
	assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
	ObjectId.fromRaw(IO.readFully(archive)));
	}
	}

	@Test
	public void archiveHeadAllFilesZipTimestamps() throws Exception {
	try (Git git = new Git(db)) {
	createTestContent(git);
	String fmt = "zip";
	File archive = new File(getTemporaryDirectory(), "archive." + fmt);
	archive(git, archive, fmt);
	ObjectId hash1 = ObjectId.fromRaw(IO.readFully(archive));

	try (InputStream fi = Files.newInputStream(archive.toPath());
	InputStream bi = new BufferedInputStream(fi);
	ArchiveInputStream o = new ZipArchiveInputStream(bi)) {
	assertEntries(o);
	}

	Thread.sleep(WAIT);
	archive(git, archive, fmt);
	assertEquals(UNEXPECTED_DIFFERENT_HASH, hash1,
	ObjectId.fromRaw(IO.readFully(archive)));
	}
	}

	private void createTestContent(Git git) throws IOException, GitAPIException,
	NoFilepatternException, NoHeadException, NoMessageException,
	UnmergedPathsException, ConcurrentRefUpdateException,
	WrongRepositoryStateException, AbortedByHookException {
	writeTrashFile("file_1.txt", "content_1_1");
	git.add().addFilepattern("file_1.txt").call();
	git.commit().setMessage("create file").call();

	writeTrashFile("file_1.txt", "content_1_2");
	writeTrashFile("file_2.txt", "content_2_2");
	git.add().addFilepattern(".").call();
	git.commit().setMessage("updated file").call();
	}

	private static void archive(Git git, File archive, String fmt)
	throws GitAPIException,
	FileNotFoundException, AmbiguousObjectException,
	IncorrectObjectTypeException, IOException {
	git.archive().setOutputStream(new FileOutputStream(archive))
	.setFormat(fmt)
	.setTree(git.getRepository().resolve("HEAD")).call();
	}

	private static void assertEntries(ArchiveInputStream o) throws IOException {
	ArchiveEntry e;
	int n = 0;
	while ((e = o.getNextEntry()) != null) {
	n++;
	assertEquals(UNEXPECTED_LAST_MODIFIED,
	(1250379778668L / 1000L) * 1000L,
	e.getLastModifiedDate().getTime());
	}
	assertEquals(UNEXPECTED_ARCHIVE_SIZE, 2, n);
	}

	private static class MockFormat
	implements ArchiveCommand.Format<MockOutputStream> {

	private Map<String, String> entries = new HashMap<>();

	private int size() {
	return entries.size();
	}

	private String getByPath(String path) {
	return entries.get(path);
	}

	private final List<String> SUFFIXES = Collections
	.unmodifiableList(Arrays.asList(".mck"));

	@Override
	public MockOutputStream createArchiveOutputStream(OutputStream s)
	throws IOException {
	return createArchiveOutputStream(s,
	Collections.<String, Object> emptyMap());
	}

	@Override
	public MockOutputStream createArchiveOutputStream(OutputStream s,
	Map<String, Object> o) throws IOException {
	for (Map.Entry<String, Object> p : o.entrySet()) {
	try {
	String methodName = "set"
	+ StringUtils.capitalize(p.getKey());
	new Statement(s, methodName, new Object[] { p.getValue() })
	.execute();
	} catch (Exception e) {
	throw new IOException("cannot set option: " + p.getKey(), e);
	}
	}
	return new MockOutputStream();
	}

	@Override
	public void putEntry(MockOutputStream out, ObjectId tree, String path, FileMode mode, ObjectLoader loader) {
	String content = mode != FileMode.TREE
	? new String(loader.getBytes(), UTF_8)
	: null;
	entries.put(path, content);
	}

	@Override
	public Iterable<String> suffixes() {
	return SUFFIXES;
	}
	}

	public static class MockOutputStream extends OutputStream {

	private int foo;

	public void setFoo(int foo) {
	this.foo = foo;
	}

	public int getFoo() {
	return foo;
	}

	@Override
	public void write(int b) throws IOException {
	// Do nothing. for testing purposes.
	}
	}
	}