org.eclipse.jgit.test/tst/org/eclipse/jgit/patch/FileHeaderTest.java - jgit - Git at Google

 /*
  * Copyright (C) 2008, Google Inc.
  * 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.patch;

 import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertNotNull;
 import static org.junit.Assert.assertNull;
 import static org.junit.Assert.assertSame;
 import static org.junit.Assert.assertTrue;

 import org.eclipse.jgit.diff.DiffEntry;
 import org.eclipse.jgit.lib.Constants;
 import org.eclipse.jgit.lib.FileMode;
 import org.eclipse.jgit.lib.ObjectId;
 import org.junit.Test;

 public class FileHeaderTest {
 	@Test
 	public void testParseGitFileName_Empty() {
 		final FileHeader fh = data("");
 		assertEquals(-1, fh.parseGitFileName(0, fh.buf.length));
 		assertNotNull(fh.getHunks());
 		assertTrue(fh.getHunks().isEmpty());
 		assertFalse(fh.hasMetaDataChanges());
 	}

 	@Test
 	public void testParseGitFileName_NoLF() {
 		final FileHeader fh = data("a/ b/");
 		assertEquals(-1, fh.parseGitFileName(0, fh.buf.length));
 	}

 	@Test
 	public void testParseGitFileName_NoSecondLine() {
 		final FileHeader fh = data("\n");
 		assertEquals(-1, fh.parseGitFileName(0, fh.buf.length));
 	}

 	@Test
 	public void testParseGitFileName_EmptyHeader() {
 		final FileHeader fh = data("\n\n");
 		assertEquals(1, fh.parseGitFileName(0, fh.buf.length));
 	}

 	@Test
 	public void testParseGitFileName_Foo() {
 		final String name = "foo";
 		final FileHeader fh = header(name);
 		assertEquals(gitLine(name).length(), fh.parseGitFileName(0,
 				fh.buf.length));
 		assertEquals(name, fh.getOldPath());
 		assertSame(fh.getOldPath(), fh.getNewPath());
 		assertFalse(fh.hasMetaDataChanges());
 	}

 	@Test
 	public void testParseGitFileName_FailFooBar() {
 		final FileHeader fh = data("a/foo b/bar\n-");
 		assertTrue(fh.parseGitFileName(0, fh.buf.length) > 0);
 		assertNull(fh.getOldPath());
 		assertNull(fh.getNewPath());
 		assertFalse(fh.hasMetaDataChanges());
 	}

 	@Test
 	public void testParseGitFileName_FooSpBar() {
 		final String name = "foo bar";
 		final FileHeader fh = header(name);
 		assertEquals(gitLine(name).length(), fh.parseGitFileName(0,
 				fh.buf.length));
 		assertEquals(name, fh.getOldPath());
 		assertSame(fh.getOldPath(), fh.getNewPath());
 		assertFalse(fh.hasMetaDataChanges());
 	}

 	@Test
 	public void testParseGitFileName_DqFooTabBar() {
 		final String name = "foo\tbar";
 		final String dqName = "foo\\tbar";
 		final FileHeader fh = dqHeader(dqName);
 		assertEquals(dqGitLine(dqName).length(), fh.parseGitFileName(0,
 				fh.buf.length));
 		assertEquals(name, fh.getOldPath());
 		assertSame(fh.getOldPath(), fh.getNewPath());
 		assertFalse(fh.hasMetaDataChanges());
 	}

 	@Test
 	public void testParseGitFileName_DqFooSpLfNulBar() {
 		final String name = "foo \n\0bar";
 		final String dqName = "foo \\n\\0bar";
 		final FileHeader fh = dqHeader(dqName);
 		assertEquals(dqGitLine(dqName).length(), fh.parseGitFileName(0,
 				fh.buf.length));
 		assertEquals(name, fh.getOldPath());
 		assertSame(fh.getOldPath(), fh.getNewPath());
 		assertFalse(fh.hasMetaDataChanges());
 	}

 	@Test
 	public void testParseGitFileName_SrcFooC() {
 		final String name = "src/foo/bar/argh/code.c";
 		final FileHeader fh = header(name);
 		assertEquals(gitLine(name).length(), fh.parseGitFileName(0,
 				fh.buf.length));
 		assertEquals(name, fh.getOldPath());
 		assertSame(fh.getOldPath(), fh.getNewPath());
 		assertFalse(fh.hasMetaDataChanges());
 	}

 	@Test
 	public void testParseGitFileName_SrcFooCNonStandardPrefix() {
 		final String name = "src/foo/bar/argh/code.c";
 		final String header = "project-v-1.0/" + name + " mydev/" + name + "\n";
 		final FileHeader fh = data(header + "-");
 		assertEquals(header.length(), fh.parseGitFileName(0, fh.buf.length));
 		assertEquals(name, fh.getOldPath());
 		assertSame(fh.getOldPath(), fh.getNewPath());
 		assertFalse(fh.hasMetaDataChanges());
 	}

 	@Test
 	public void testParseUnicodeName_NewFile() {
 		final FileHeader fh = data("diff --git \"a/\\303\\205ngstr\\303\\266m\" \"b/\\303\\205ngstr\\303\\266m\"\n"
 				+ "new file mode 100644\n"
 				+ "index 0000000..7898192\n"
 				+ "--- /dev/null\n"
 				+ "+++ \"b/\\303\\205ngstr\\303\\266m\"\n"
 				+ "@@ -0,0 +1 @@\n" + "+a\n");
 		assertParse(fh);

 		assertEquals("/dev/null", fh.getOldPath());
 		assertSame(DiffEntry.DEV_NULL, fh.getOldPath());
 		assertEquals("\u00c5ngstr\u00f6m", fh.getNewPath());

 		assertSame(FileHeader.ChangeType.ADD, fh.getChangeType());
 		assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
 		assertTrue(fh.hasMetaDataChanges());

 		assertSame(FileMode.MISSING, fh.getOldMode());
 		assertSame(FileMode.REGULAR_FILE, fh.getNewMode());

 		assertEquals("0000000", fh.getOldId().name());
 		assertEquals("7898192", fh.getNewId().name());
 		assertEquals(0, fh.getScore());
 	}

 	@Test
 	public void testParseUnicodeName_DeleteFile() {
 		final FileHeader fh = data("diff --git \"a/\\303\\205ngstr\\303\\266m\" \"b/\\303\\205ngstr\\303\\266m\"\n"
 				+ "deleted file mode 100644\n"
 				+ "index 7898192..0000000\n"
 				+ "--- \"a/\\303\\205ngstr\\303\\266m\"\n"
 				+ "+++ /dev/null\n"
 				+ "@@ -1 +0,0 @@\n" + "-a\n");
 		assertParse(fh);

 		assertEquals("\u00c5ngstr\u00f6m", fh.getOldPath());
 		assertEquals("/dev/null", fh.getNewPath());
 		assertSame(DiffEntry.DEV_NULL, fh.getNewPath());

 		assertSame(FileHeader.ChangeType.DELETE, fh.getChangeType());
 		assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
 		assertTrue(fh.hasMetaDataChanges());

 		assertSame(FileMode.REGULAR_FILE, fh.getOldMode());
 		assertSame(FileMode.MISSING, fh.getNewMode());

 		assertEquals("7898192", fh.getOldId().name());
 		assertEquals("0000000", fh.getNewId().name());
 		assertEquals(0, fh.getScore());
 	}

 	@Test
 	public void testParseModeChange() {
 		final FileHeader fh = data("diff --git a/a b b/a b\n"
 				+ "old mode 100644\n" + "new mode 100755\n");
 		assertParse(fh);
 		assertEquals("a b", fh.getOldPath());
 		assertEquals("a b", fh.getNewPath());

 		assertSame(FileHeader.ChangeType.MODIFY, fh.getChangeType());
 		assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
 		assertTrue(fh.hasMetaDataChanges());

 		assertNull(fh.getOldId());
 		assertNull(fh.getNewId());

 		assertSame(FileMode.REGULAR_FILE, fh.getOldMode());
 		assertSame(FileMode.EXECUTABLE_FILE, fh.getNewMode());
 		assertEquals(0, fh.getScore());
 	}

 	@Test
 	public void testParseRename100_NewStyle() {
 		final FileHeader fh = data("diff --git a/a b/ c/\\303\\205ngstr\\303\\266m\n"
 				+ "similarity index 100%\n"
 				+ "rename from a\n"
 				+ "rename to \" c/\\303\\205ngstr\\303\\266m\"\n");
 		int ptr = fh.parseGitFileName(0, fh.buf.length);
 		assertTrue(ptr > 0);
 		assertNull(fh.getOldPath()); // can't parse names on a rename
 		assertNull(fh.getNewPath());

 		ptr = fh.parseGitHeaders(ptr, fh.buf.length);
 		assertTrue(ptr > 0);

 		assertEquals("a", fh.getOldPath());
 		assertEquals(" c/\u00c5ngstr\u00f6m", fh.getNewPath());

 		assertSame(FileHeader.ChangeType.RENAME, fh.getChangeType());
 		assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
 		assertTrue(fh.hasMetaDataChanges());

 		assertNull(fh.getOldId());
 		assertNull(fh.getNewId());

 		assertNull(fh.getOldMode());
 		assertNull(fh.getNewMode());

 		assertEquals(100, fh.getScore());
 	}

 	@Test
 	public void testParseRename100_OldStyle() {
 		final FileHeader fh = data("diff --git a/a b/ c/\\303\\205ngstr\\303\\266m\n"
 				+ "similarity index 100%\n"
 				+ "rename old a\n"
 				+ "rename new \" c/\\303\\205ngstr\\303\\266m\"\n");
 		int ptr = fh.parseGitFileName(0, fh.buf.length);
 		assertTrue(ptr > 0);
 		assertNull(fh.getOldPath()); // can't parse names on a rename
 		assertNull(fh.getNewPath());

 		ptr = fh.parseGitHeaders(ptr, fh.buf.length);
 		assertTrue(ptr > 0);

 		assertEquals("a", fh.getOldPath());
 		assertEquals(" c/\u00c5ngstr\u00f6m", fh.getNewPath());

 		assertSame(FileHeader.ChangeType.RENAME, fh.getChangeType());
 		assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
 		assertTrue(fh.hasMetaDataChanges());

 		assertNull(fh.getOldId());
 		assertNull(fh.getNewId());

 		assertNull(fh.getOldMode());
 		assertNull(fh.getNewMode());

 		assertEquals(100, fh.getScore());
 	}

 	@Test
 	public void testParseCopy100() {
 		final FileHeader fh = data("diff --git a/a b/ c/\\303\\205ngstr\\303\\266m\n"
 				+ "similarity index 100%\n"
 				+ "copy from a\n"
 				+ "copy to \" c/\\303\\205ngstr\\303\\266m\"\n");
 		int ptr = fh.parseGitFileName(0, fh.buf.length);
 		assertTrue(ptr > 0);
 		assertNull(fh.getOldPath()); // can't parse names on a copy
 		assertNull(fh.getNewPath());

 		ptr = fh.parseGitHeaders(ptr, fh.buf.length);
 		assertTrue(ptr > 0);

 		assertEquals("a", fh.getOldPath());
 		assertEquals(" c/\u00c5ngstr\u00f6m", fh.getNewPath());

 		assertSame(FileHeader.ChangeType.COPY, fh.getChangeType());
 		assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
 		assertTrue(fh.hasMetaDataChanges());

 		assertNull(fh.getOldId());
 		assertNull(fh.getNewId());

 		assertNull(fh.getOldMode());
 		assertNull(fh.getNewMode());

 		assertEquals(100, fh.getScore());
 	}

 	@Test
 	public void testParseFullIndexLine_WithMode() {
 		final String oid = "78981922613b2afb6025042ff6bd878ac1994e85";
 		final String nid = "61780798228d17af2d34fce4cfbdf35556832472";
 		final FileHeader fh = data("diff --git a/a b/a\n" + "index " + oid
 				+ ".." + nid + " 100644\n" + "--- a/a\n" + "+++ b/a\n");
 		assertParse(fh);

 		assertEquals("a", fh.getOldPath());
 		assertEquals("a", fh.getNewPath());

 		assertSame(FileMode.REGULAR_FILE, fh.getOldMode());
 		assertSame(FileMode.REGULAR_FILE, fh.getNewMode());
 		assertFalse(fh.hasMetaDataChanges());

 		assertNotNull(fh.getOldId());
 		assertNotNull(fh.getNewId());

 		assertTrue(fh.getOldId().isComplete());
 		assertTrue(fh.getNewId().isComplete());

 		assertEquals(ObjectId.fromString(oid), fh.getOldId().toObjectId());
 		assertEquals(ObjectId.fromString(nid), fh.getNewId().toObjectId());
 	}

 	@Test
 	public void testParseFullIndexLine_NoMode() {
 		final String oid = "78981922613b2afb6025042ff6bd878ac1994e85";
 		final String nid = "61780798228d17af2d34fce4cfbdf35556832472";
 		final FileHeader fh = data("diff --git a/a b/a\n" + "index " + oid
 				+ ".." + nid + "\n" + "--- a/a\n" + "+++ b/a\n");
 		assertParse(fh);

 		assertEquals("a", fh.getOldPath());
 		assertEquals("a", fh.getNewPath());
 		assertFalse(fh.hasMetaDataChanges());

 		assertNull(fh.getOldMode());
 		assertNull(fh.getNewMode());

 		assertNotNull(fh.getOldId());
 		assertNotNull(fh.getNewId());

 		assertTrue(fh.getOldId().isComplete());
 		assertTrue(fh.getNewId().isComplete());

 		assertEquals(ObjectId.fromString(oid), fh.getOldId().toObjectId());
 		assertEquals(ObjectId.fromString(nid), fh.getNewId().toObjectId());
 	}

 	@Test
 	public void testParseAbbrIndexLine_WithMode() {
 		final int a = 7;
 		final String oid = "78981922613b2afb6025042ff6bd878ac1994e85";
 		final String nid = "61780798228d17af2d34fce4cfbdf35556832472";
 		final FileHeader fh = data("diff --git a/a b/a\n" + "index "
 				+ oid.substring(0, a - 1) + ".." + nid.substring(0, a - 1)
 				+ " 100644\n" + "--- a/a\n" + "+++ b/a\n");
 		assertParse(fh);

 		assertEquals("a", fh.getOldPath());
 		assertEquals("a", fh.getNewPath());

 		assertSame(FileMode.REGULAR_FILE, fh.getOldMode());
 		assertSame(FileMode.REGULAR_FILE, fh.getNewMode());
 		assertFalse(fh.hasMetaDataChanges());

 		assertNotNull(fh.getOldId());
 		assertNotNull(fh.getNewId());

 		assertFalse(fh.getOldId().isComplete());
 		assertFalse(fh.getNewId().isComplete());

 		assertEquals(oid.substring(0, a - 1), fh.getOldId().name());
 		assertEquals(nid.substring(0, a - 1), fh.getNewId().name());

 		assertTrue(ObjectId.fromString(oid).startsWith(fh.getOldId()));
 		assertTrue(ObjectId.fromString(nid).startsWith(fh.getNewId()));
 	}

 	@Test
 	public void testParseAbbrIndexLine_NoMode() {
 		final int a = 7;
 		final String oid = "78981922613b2afb6025042ff6bd878ac1994e85";
 		final String nid = "61780798228d17af2d34fce4cfbdf35556832472";
 		final FileHeader fh = data("diff --git a/a b/a\n" + "index "
 				+ oid.substring(0, a - 1) + ".." + nid.substring(0, a - 1)
 				+ "\n" + "--- a/a\n" + "+++ b/a\n");
 		assertParse(fh);

 		assertEquals("a", fh.getOldPath());
 		assertEquals("a", fh.getNewPath());

 		assertNull(fh.getOldMode());
 		assertNull(fh.getNewMode());
 		assertFalse(fh.hasMetaDataChanges());

 		assertNotNull(fh.getOldId());
 		assertNotNull(fh.getNewId());

 		assertFalse(fh.getOldId().isComplete());
 		assertFalse(fh.getNewId().isComplete());

 		assertEquals(oid.substring(0, a - 1), fh.getOldId().name());
 		assertEquals(nid.substring(0, a - 1), fh.getNewId().name());

 		assertTrue(ObjectId.fromString(oid).startsWith(fh.getOldId()));
 		assertTrue(ObjectId.fromString(nid).startsWith(fh.getNewId()));
 	}

 	private static void assertParse(FileHeader fh) {
 		int ptr = fh.parseGitFileName(0, fh.buf.length);
 		assertTrue(ptr > 0);
 		ptr = fh.parseGitHeaders(ptr, fh.buf.length);
 		assertTrue(ptr > 0);
 	}

 	private static FileHeader data(String in) {
 		return new FileHeader(Constants.encodeASCII(in), 0);
 	}

 	private static FileHeader header(String path) {
 		return data(gitLine(path) + "--- " + path + "\n");
 	}

 	private static String gitLine(String path) {
 		return "a/" + path + " b/" + path + "\n";
 	}

 	private static FileHeader dqHeader(String path) {
 		return data(dqGitLine(path) + "--- " + path + "\n");
 	}

 	private static String dqGitLine(String path) {
 		return "\"a/" + path + "\" \"b/" + path + "\"\n";
 	}
 }
	/*
	* Copyright (C) 2008, Google Inc.
	* 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.patch;

	import static org.junit.Assert.assertEquals;
	import static org.junit.Assert.assertFalse;
	import static org.junit.Assert.assertNotNull;
	import static org.junit.Assert.assertNull;
	import static org.junit.Assert.assertSame;
	import static org.junit.Assert.assertTrue;

	import org.eclipse.jgit.diff.DiffEntry;
	import org.eclipse.jgit.lib.Constants;
	import org.eclipse.jgit.lib.FileMode;
	import org.eclipse.jgit.lib.ObjectId;
	import org.junit.Test;

	public class FileHeaderTest {
	@Test
	public void testParseGitFileName_Empty() {
	final FileHeader fh = data("");
	assertEquals(-1, fh.parseGitFileName(0, fh.buf.length));
	assertNotNull(fh.getHunks());
	assertTrue(fh.getHunks().isEmpty());
	assertFalse(fh.hasMetaDataChanges());
	}

	@Test
	public void testParseGitFileName_NoLF() {
	final FileHeader fh = data("a/ b/");
	assertEquals(-1, fh.parseGitFileName(0, fh.buf.length));
	}

	@Test
	public void testParseGitFileName_NoSecondLine() {
	final FileHeader fh = data("\n");
	assertEquals(-1, fh.parseGitFileName(0, fh.buf.length));
	}

	@Test
	public void testParseGitFileName_EmptyHeader() {
	final FileHeader fh = data("\n\n");
	assertEquals(1, fh.parseGitFileName(0, fh.buf.length));
	}

	@Test
	public void testParseGitFileName_Foo() {
	final String name = "foo";
	final FileHeader fh = header(name);
	assertEquals(gitLine(name).length(), fh.parseGitFileName(0,
	fh.buf.length));
	assertEquals(name, fh.getOldPath());
	assertSame(fh.getOldPath(), fh.getNewPath());
	assertFalse(fh.hasMetaDataChanges());
	}

	@Test
	public void testParseGitFileName_FailFooBar() {
	final FileHeader fh = data("a/foo b/bar\n-");
	assertTrue(fh.parseGitFileName(0, fh.buf.length) > 0);
	assertNull(fh.getOldPath());
	assertNull(fh.getNewPath());
	assertFalse(fh.hasMetaDataChanges());
	}

	@Test
	public void testParseGitFileName_FooSpBar() {
	final String name = "foo bar";
	final FileHeader fh = header(name);
	assertEquals(gitLine(name).length(), fh.parseGitFileName(0,
	fh.buf.length));
	assertEquals(name, fh.getOldPath());
	assertSame(fh.getOldPath(), fh.getNewPath());
	assertFalse(fh.hasMetaDataChanges());
	}

	@Test
	public void testParseGitFileName_DqFooTabBar() {
	final String name = "foo\tbar";
	final String dqName = "foo\\tbar";
	final FileHeader fh = dqHeader(dqName);
	assertEquals(dqGitLine(dqName).length(), fh.parseGitFileName(0,
	fh.buf.length));
	assertEquals(name, fh.getOldPath());
	assertSame(fh.getOldPath(), fh.getNewPath());
	assertFalse(fh.hasMetaDataChanges());
	}

	@Test
	public void testParseGitFileName_DqFooSpLfNulBar() {
	final String name = "foo \n\0bar";
	final String dqName = "foo \\n\\0bar";
	final FileHeader fh = dqHeader(dqName);
	assertEquals(dqGitLine(dqName).length(), fh.parseGitFileName(0,
	fh.buf.length));
	assertEquals(name, fh.getOldPath());
	assertSame(fh.getOldPath(), fh.getNewPath());
	assertFalse(fh.hasMetaDataChanges());
	}

	@Test
	public void testParseGitFileName_SrcFooC() {
	final String name = "src/foo/bar/argh/code.c";
	final FileHeader fh = header(name);
	assertEquals(gitLine(name).length(), fh.parseGitFileName(0,
	fh.buf.length));
	assertEquals(name, fh.getOldPath());
	assertSame(fh.getOldPath(), fh.getNewPath());
	assertFalse(fh.hasMetaDataChanges());
	}

	@Test
	public void testParseGitFileName_SrcFooCNonStandardPrefix() {
	final String name = "src/foo/bar/argh/code.c";
	final String header = "project-v-1.0/" + name + " mydev/" + name + "\n";
	final FileHeader fh = data(header + "-");
	assertEquals(header.length(), fh.parseGitFileName(0, fh.buf.length));
	assertEquals(name, fh.getOldPath());
	assertSame(fh.getOldPath(), fh.getNewPath());
	assertFalse(fh.hasMetaDataChanges());
	}

	@Test
	public void testParseUnicodeName_NewFile() {
	final FileHeader fh = data("diff --git \"a/\\303\\205ngstr\\303\\266m\" \"b/\\303\\205ngstr\\303\\266m\"\n"
	+ "new file mode 100644\n"
	+ "index 0000000..7898192\n"
	+ "--- /dev/null\n"
	+ "+++ \"b/\\303\\205ngstr\\303\\266m\"\n"
	+ "@@ -0,0 +1 @@\n" + "+a\n");
	assertParse(fh);

	assertEquals("/dev/null", fh.getOldPath());
	assertSame(DiffEntry.DEV_NULL, fh.getOldPath());
	assertEquals("\u00c5ngstr\u00f6m", fh.getNewPath());

	assertSame(FileHeader.ChangeType.ADD, fh.getChangeType());
	assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
	assertTrue(fh.hasMetaDataChanges());

	assertSame(FileMode.MISSING, fh.getOldMode());
	assertSame(FileMode.REGULAR_FILE, fh.getNewMode());

	assertEquals("0000000", fh.getOldId().name());
	assertEquals("7898192", fh.getNewId().name());
	assertEquals(0, fh.getScore());
	}

	@Test
	public void testParseUnicodeName_DeleteFile() {
	final FileHeader fh = data("diff --git \"a/\\303\\205ngstr\\303\\266m\" \"b/\\303\\205ngstr\\303\\266m\"\n"
	+ "deleted file mode 100644\n"
	+ "index 7898192..0000000\n"
	+ "--- \"a/\\303\\205ngstr\\303\\266m\"\n"
	+ "+++ /dev/null\n"
	+ "@@ -1 +0,0 @@\n" + "-a\n");
	assertParse(fh);

	assertEquals("\u00c5ngstr\u00f6m", fh.getOldPath());
	assertEquals("/dev/null", fh.getNewPath());
	assertSame(DiffEntry.DEV_NULL, fh.getNewPath());

	assertSame(FileHeader.ChangeType.DELETE, fh.getChangeType());
	assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
	assertTrue(fh.hasMetaDataChanges());

	assertSame(FileMode.REGULAR_FILE, fh.getOldMode());
	assertSame(FileMode.MISSING, fh.getNewMode());

	assertEquals("7898192", fh.getOldId().name());
	assertEquals("0000000", fh.getNewId().name());
	assertEquals(0, fh.getScore());
	}

	@Test
	public void testParseModeChange() {
	final FileHeader fh = data("diff --git a/a b b/a b\n"
	+ "old mode 100644\n" + "new mode 100755\n");
	assertParse(fh);
	assertEquals("a b", fh.getOldPath());
	assertEquals("a b", fh.getNewPath());

	assertSame(FileHeader.ChangeType.MODIFY, fh.getChangeType());
	assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
	assertTrue(fh.hasMetaDataChanges());

	assertNull(fh.getOldId());
	assertNull(fh.getNewId());

	assertSame(FileMode.REGULAR_FILE, fh.getOldMode());
	assertSame(FileMode.EXECUTABLE_FILE, fh.getNewMode());
	assertEquals(0, fh.getScore());
	}

	@Test
	public void testParseRename100_NewStyle() {
	final FileHeader fh = data("diff --git a/a b/ c/\\303\\205ngstr\\303\\266m\n"
	+ "similarity index 100%\n"
	+ "rename from a\n"
	+ "rename to \" c/\\303\\205ngstr\\303\\266m\"\n");
	int ptr = fh.parseGitFileName(0, fh.buf.length);
	assertTrue(ptr > 0);
	assertNull(fh.getOldPath()); // can't parse names on a rename
	assertNull(fh.getNewPath());

	ptr = fh.parseGitHeaders(ptr, fh.buf.length);
	assertTrue(ptr > 0);

	assertEquals("a", fh.getOldPath());
	assertEquals(" c/\u00c5ngstr\u00f6m", fh.getNewPath());

	assertSame(FileHeader.ChangeType.RENAME, fh.getChangeType());
	assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
	assertTrue(fh.hasMetaDataChanges());

	assertNull(fh.getOldId());
	assertNull(fh.getNewId());

	assertNull(fh.getOldMode());
	assertNull(fh.getNewMode());

	assertEquals(100, fh.getScore());
	}

	@Test
	public void testParseRename100_OldStyle() {
	final FileHeader fh = data("diff --git a/a b/ c/\\303\\205ngstr\\303\\266m\n"
	+ "similarity index 100%\n"
	+ "rename old a\n"
	+ "rename new \" c/\\303\\205ngstr\\303\\266m\"\n");
	int ptr = fh.parseGitFileName(0, fh.buf.length);
	assertTrue(ptr > 0);
	assertNull(fh.getOldPath()); // can't parse names on a rename
	assertNull(fh.getNewPath());

	ptr = fh.parseGitHeaders(ptr, fh.buf.length);
	assertTrue(ptr > 0);

	assertEquals("a", fh.getOldPath());
	assertEquals(" c/\u00c5ngstr\u00f6m", fh.getNewPath());

	assertSame(FileHeader.ChangeType.RENAME, fh.getChangeType());
	assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
	assertTrue(fh.hasMetaDataChanges());

	assertNull(fh.getOldId());
	assertNull(fh.getNewId());

	assertNull(fh.getOldMode());
	assertNull(fh.getNewMode());

	assertEquals(100, fh.getScore());
	}

	@Test
	public void testParseCopy100() {
	final FileHeader fh = data("diff --git a/a b/ c/\\303\\205ngstr\\303\\266m\n"
	+ "similarity index 100%\n"
	+ "copy from a\n"
	+ "copy to \" c/\\303\\205ngstr\\303\\266m\"\n");
	int ptr = fh.parseGitFileName(0, fh.buf.length);
	assertTrue(ptr > 0);
	assertNull(fh.getOldPath()); // can't parse names on a copy
	assertNull(fh.getNewPath());

	ptr = fh.parseGitHeaders(ptr, fh.buf.length);
	assertTrue(ptr > 0);

	assertEquals("a", fh.getOldPath());
	assertEquals(" c/\u00c5ngstr\u00f6m", fh.getNewPath());

	assertSame(FileHeader.ChangeType.COPY, fh.getChangeType());
	assertSame(FileHeader.PatchType.UNIFIED, fh.getPatchType());
	assertTrue(fh.hasMetaDataChanges());

	assertNull(fh.getOldId());
	assertNull(fh.getNewId());

	assertNull(fh.getOldMode());
	assertNull(fh.getNewMode());

	assertEquals(100, fh.getScore());
	}

	@Test
	public void testParseFullIndexLine_WithMode() {
	final String oid = "78981922613b2afb6025042ff6bd878ac1994e85";
	final String nid = "61780798228d17af2d34fce4cfbdf35556832472";
	final FileHeader fh = data("diff --git a/a b/a\n" + "index " + oid
	+ ".." + nid + " 100644\n" + "--- a/a\n" + "+++ b/a\n");
	assertParse(fh);

	assertEquals("a", fh.getOldPath());
	assertEquals("a", fh.getNewPath());

	assertSame(FileMode.REGULAR_FILE, fh.getOldMode());
	assertSame(FileMode.REGULAR_FILE, fh.getNewMode());
	assertFalse(fh.hasMetaDataChanges());

	assertNotNull(fh.getOldId());
	assertNotNull(fh.getNewId());

	assertTrue(fh.getOldId().isComplete());
	assertTrue(fh.getNewId().isComplete());

	assertEquals(ObjectId.fromString(oid), fh.getOldId().toObjectId());
	assertEquals(ObjectId.fromString(nid), fh.getNewId().toObjectId());
	}

	@Test
	public void testParseFullIndexLine_NoMode() {
	final String oid = "78981922613b2afb6025042ff6bd878ac1994e85";
	final String nid = "61780798228d17af2d34fce4cfbdf35556832472";
	final FileHeader fh = data("diff --git a/a b/a\n" + "index " + oid
	+ ".." + nid + "\n" + "--- a/a\n" + "+++ b/a\n");
	assertParse(fh);

	assertEquals("a", fh.getOldPath());
	assertEquals("a", fh.getNewPath());
	assertFalse(fh.hasMetaDataChanges());

	assertNull(fh.getOldMode());
	assertNull(fh.getNewMode());

	assertNotNull(fh.getOldId());
	assertNotNull(fh.getNewId());

	assertTrue(fh.getOldId().isComplete());
	assertTrue(fh.getNewId().isComplete());

	assertEquals(ObjectId.fromString(oid), fh.getOldId().toObjectId());
	assertEquals(ObjectId.fromString(nid), fh.getNewId().toObjectId());
	}

	@Test
	public void testParseAbbrIndexLine_WithMode() {
	final int a = 7;
	final String oid = "78981922613b2afb6025042ff6bd878ac1994e85";
	final String nid = "61780798228d17af2d34fce4cfbdf35556832472";
	final FileHeader fh = data("diff --git a/a b/a\n" + "index "
	+ oid.substring(0, a - 1) + ".." + nid.substring(0, a - 1)
	+ " 100644\n" + "--- a/a\n" + "+++ b/a\n");
	assertParse(fh);

	assertEquals("a", fh.getOldPath());
	assertEquals("a", fh.getNewPath());

	assertSame(FileMode.REGULAR_FILE, fh.getOldMode());
	assertSame(FileMode.REGULAR_FILE, fh.getNewMode());
	assertFalse(fh.hasMetaDataChanges());

	assertNotNull(fh.getOldId());
	assertNotNull(fh.getNewId());

	assertFalse(fh.getOldId().isComplete());
	assertFalse(fh.getNewId().isComplete());

	assertEquals(oid.substring(0, a - 1), fh.getOldId().name());
	assertEquals(nid.substring(0, a - 1), fh.getNewId().name());

	assertTrue(ObjectId.fromString(oid).startsWith(fh.getOldId()));
	assertTrue(ObjectId.fromString(nid).startsWith(fh.getNewId()));
	}

	@Test
	public void testParseAbbrIndexLine_NoMode() {
	final int a = 7;
	final String oid = "78981922613b2afb6025042ff6bd878ac1994e85";
	final String nid = "61780798228d17af2d34fce4cfbdf35556832472";
	final FileHeader fh = data("diff --git a/a b/a\n" + "index "
	+ oid.substring(0, a - 1) + ".." + nid.substring(0, a - 1)
	+ "\n" + "--- a/a\n" + "+++ b/a\n");
	assertParse(fh);

	assertEquals("a", fh.getOldPath());
	assertEquals("a", fh.getNewPath());

	assertNull(fh.getOldMode());
	assertNull(fh.getNewMode());
	assertFalse(fh.hasMetaDataChanges());

	assertNotNull(fh.getOldId());
	assertNotNull(fh.getNewId());

	assertFalse(fh.getOldId().isComplete());
	assertFalse(fh.getNewId().isComplete());

	assertEquals(oid.substring(0, a - 1), fh.getOldId().name());
	assertEquals(nid.substring(0, a - 1), fh.getNewId().name());

	assertTrue(ObjectId.fromString(oid).startsWith(fh.getOldId()));
	assertTrue(ObjectId.fromString(nid).startsWith(fh.getNewId()));
	}

	private static void assertParse(FileHeader fh) {
	int ptr = fh.parseGitFileName(0, fh.buf.length);
	assertTrue(ptr > 0);
	ptr = fh.parseGitHeaders(ptr, fh.buf.length);
	assertTrue(ptr > 0);
	}

	private static FileHeader data(String in) {
	return new FileHeader(Constants.encodeASCII(in), 0);
	}

	private static FileHeader header(String path) {
	return data(gitLine(path) + "--- " + path + "\n");
	}

	private static String gitLine(String path) {
	return "a/" + path + " b/" + path + "\n";
	}

	private static FileHeader dqHeader(String path) {
	return data(dqGitLine(path) + "--- " + path + "\n");
	}

	private static String dqGitLine(String path) {
	return "\"a/" + path + "\" \"b/" + path + "\"\n";
	}
	}