515 lines
16 KiB
Java
515 lines
16 KiB
Java
/*
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* Copyright (C) 2010, 2013 Google Inc.
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* and other copyright owners as documented in the project's IP log.
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*
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* This program and the accompanying materials are made available
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* under the terms of the Eclipse Distribution License v1.0 which
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* accompanies this distribution, is reproduced below, and is
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* available at http://www.eclipse.org/org/documents/edl-v10.php
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*
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or
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* without modification, are permitted provided that the following
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* conditions are met:
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*
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* - Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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*
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* - Redistributions in binary form must reproduce the above
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* copyright notice, this list of conditions and the following
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* disclaimer in the documentation and/or other materials provided
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* with the distribution.
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*
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* - Neither the name of the Eclipse Foundation, Inc. nor the
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* names of its contributors may be used to endorse or promote
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* products derived from this software without specific prior
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* written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND
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* CONTRIBUTORS "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES,
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
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* CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
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* SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
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* CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
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* STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
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* ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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package org.eclipse.jgit.diff;
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import static org.junit.Assert.assertEquals;
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import java.io.BufferedOutputStream;
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import java.io.ByteArrayOutputStream;
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import java.io.File;
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import org.eclipse.jgit.api.Git;
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import org.eclipse.jgit.diff.DiffEntry.ChangeType;
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import org.eclipse.jgit.dircache.DirCacheIterator;
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import org.eclipse.jgit.junit.RepositoryTestCase;
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import org.eclipse.jgit.junit.TestRepository;
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import org.eclipse.jgit.lib.AnyObjectId;
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import org.eclipse.jgit.lib.FileMode;
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import org.eclipse.jgit.lib.ObjectId;
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import org.eclipse.jgit.lib.Repository;
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import org.eclipse.jgit.patch.FileHeader;
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import org.eclipse.jgit.patch.HunkHeader;
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import org.eclipse.jgit.revwalk.RevCommit;
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import org.eclipse.jgit.treewalk.FileTreeIterator;
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import org.eclipse.jgit.treewalk.filter.PathFilter;
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import org.eclipse.jgit.util.FileUtils;
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import org.eclipse.jgit.util.RawParseUtils;
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import org.eclipse.jgit.util.io.DisabledOutputStream;
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import org.junit.After;
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import org.junit.Before;
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import org.junit.Test;
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public class DiffFormatterTest extends RepositoryTestCase {
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private static final String DIFF = "diff --git ";
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private static final String REGULAR_FILE = "100644";
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private static final String GITLINK = "160000";
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private static final String PATH_A = "src/a";
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private static final String PATH_B = "src/b";
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private DiffFormatter df;
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private TestRepository<Repository> testDb;
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@Override
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@Before
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public void setUp() throws Exception {
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super.setUp();
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testDb = new TestRepository<>(db);
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df = new DiffFormatter(DisabledOutputStream.INSTANCE);
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df.setRepository(db);
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df.setAbbreviationLength(8);
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}
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@Override
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@After
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public void tearDown() throws Exception {
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if (df != null) {
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df.close();
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}
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super.tearDown();
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}
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@Test
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public void testCreateFileHeader_Add() throws Exception {
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ObjectId adId = blob("a\nd\n");
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DiffEntry ent = DiffEntry.add("FOO", adId);
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FileHeader fh = df.toFileHeader(ent);
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String diffHeader = "diff --git a/FOO b/FOO\n" //
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+ "new file mode " + REGULAR_FILE + "\n"
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+ "index "
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+ ObjectId.zeroId().abbreviate(8).name()
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+ ".."
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+ adId.abbreviate(8).name() + "\n" //
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+ "--- /dev/null\n"//
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+ "+++ b/FOO\n";
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assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
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assertEquals(0, fh.getStartOffset());
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assertEquals(fh.getBuffer().length, fh.getEndOffset());
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assertEquals(FileHeader.PatchType.UNIFIED, fh.getPatchType());
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assertEquals(1, fh.getHunks().size());
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HunkHeader hh = fh.getHunks().get(0);
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assertEquals(1, hh.toEditList().size());
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EditList el = hh.toEditList();
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assertEquals(1, el.size());
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Edit e = el.get(0);
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assertEquals(0, e.getBeginA());
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assertEquals(0, e.getEndA());
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assertEquals(0, e.getBeginB());
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assertEquals(2, e.getEndB());
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assertEquals(Edit.Type.INSERT, e.getType());
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}
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@Test
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public void testCreateFileHeader_Delete() throws Exception {
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ObjectId adId = blob("a\nd\n");
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DiffEntry ent = DiffEntry.delete("FOO", adId);
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FileHeader fh = df.toFileHeader(ent);
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String diffHeader = "diff --git a/FOO b/FOO\n" //
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+ "deleted file mode " + REGULAR_FILE + "\n"
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+ "index "
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+ adId.abbreviate(8).name()
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+ ".."
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+ ObjectId.zeroId().abbreviate(8).name() + "\n" //
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+ "--- a/FOO\n"//
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+ "+++ /dev/null\n";
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assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
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assertEquals(0, fh.getStartOffset());
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assertEquals(fh.getBuffer().length, fh.getEndOffset());
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assertEquals(FileHeader.PatchType.UNIFIED, fh.getPatchType());
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assertEquals(1, fh.getHunks().size());
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HunkHeader hh = fh.getHunks().get(0);
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assertEquals(1, hh.toEditList().size());
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EditList el = hh.toEditList();
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assertEquals(1, el.size());
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Edit e = el.get(0);
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assertEquals(0, e.getBeginA());
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assertEquals(2, e.getEndA());
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assertEquals(0, e.getBeginB());
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assertEquals(0, e.getEndB());
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assertEquals(Edit.Type.DELETE, e.getType());
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}
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@Test
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public void testCreateFileHeader_Modify() throws Exception {
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ObjectId adId = blob("a\nd\n");
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ObjectId abcdId = blob("a\nb\nc\nd\n");
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String diffHeader = makeDiffHeader(PATH_A, PATH_A, adId, abcdId);
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DiffEntry ad = DiffEntry.delete(PATH_A, adId);
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DiffEntry abcd = DiffEntry.add(PATH_A, abcdId);
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DiffEntry mod = DiffEntry.pair(ChangeType.MODIFY, ad, abcd, 0);
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FileHeader fh = df.toFileHeader(mod);
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assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
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assertEquals(0, fh.getStartOffset());
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assertEquals(fh.getBuffer().length, fh.getEndOffset());
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assertEquals(FileHeader.PatchType.UNIFIED, fh.getPatchType());
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assertEquals(1, fh.getHunks().size());
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HunkHeader hh = fh.getHunks().get(0);
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assertEquals(1, hh.toEditList().size());
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EditList el = hh.toEditList();
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assertEquals(1, el.size());
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Edit e = el.get(0);
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assertEquals(1, e.getBeginA());
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assertEquals(1, e.getEndA());
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assertEquals(1, e.getBeginB());
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assertEquals(3, e.getEndB());
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assertEquals(Edit.Type.INSERT, e.getType());
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}
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@Test
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public void testCreateFileHeader_Binary() throws Exception {
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ObjectId adId = blob("a\nd\n");
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ObjectId binId = blob("a\nb\nc\n\0\0\0\0d\n");
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String diffHeader = makeDiffHeader(PATH_A, PATH_B, adId, binId)
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+ "Binary files differ\n";
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DiffEntry ad = DiffEntry.delete(PATH_A, adId);
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DiffEntry abcd = DiffEntry.add(PATH_B, binId);
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DiffEntry mod = DiffEntry.pair(ChangeType.MODIFY, ad, abcd, 0);
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FileHeader fh = df.toFileHeader(mod);
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assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
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assertEquals(FileHeader.PatchType.BINARY, fh.getPatchType());
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assertEquals(1, fh.getHunks().size());
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HunkHeader hh = fh.getHunks().get(0);
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assertEquals(0, hh.toEditList().size());
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}
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@Test
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public void testCreateFileHeader_GitLink() throws Exception {
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ObjectId aId = blob("a\n");
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ObjectId bId = blob("b\n");
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String diffHeader = makeDiffHeaderModeChange(PATH_A, PATH_A, aId, bId,
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GITLINK, REGULAR_FILE);
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DiffEntry ad = DiffEntry.delete(PATH_A, aId);
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ad.oldMode = FileMode.GITLINK;
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DiffEntry abcd = DiffEntry.add(PATH_A, bId);
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DiffEntry mod = DiffEntry.pair(ChangeType.MODIFY, ad, abcd, 0);
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FileHeader fh = df.toFileHeader(mod);
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assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
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assertEquals(1, fh.getHunks().size());
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HunkHeader hh = fh.getHunks().get(0);
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assertEquals(1, hh.toEditList().size());
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}
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@Test
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public void testCreateFileHeader_AddGitLink() throws Exception {
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ObjectId adId = blob("a\nd\n");
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DiffEntry ent = DiffEntry.add("FOO", adId);
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ent.newMode = FileMode.GITLINK;
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FileHeader fh = df.toFileHeader(ent);
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String diffHeader = "diff --git a/FOO b/FOO\n" //
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+ "new file mode " + GITLINK + "\n"
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+ "index "
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+ ObjectId.zeroId().abbreviate(8).name()
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+ ".."
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+ adId.abbreviate(8).name() + "\n" //
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+ "--- /dev/null\n"//
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+ "+++ b/FOO\n";
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assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
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assertEquals(1, fh.getHunks().size());
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HunkHeader hh = fh.getHunks().get(0);
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EditList el = hh.toEditList();
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assertEquals(1, el.size());
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Edit e = el.get(0);
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assertEquals(0, e.getBeginA());
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assertEquals(0, e.getEndA());
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assertEquals(0, e.getBeginB());
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assertEquals(1, e.getEndB());
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assertEquals(Edit.Type.INSERT, e.getType());
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}
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@Test
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public void testCreateFileHeader_DeleteGitLink() throws Exception {
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ObjectId adId = blob("a\nd\n");
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DiffEntry ent = DiffEntry.delete("FOO", adId);
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ent.oldMode = FileMode.GITLINK;
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FileHeader fh = df.toFileHeader(ent);
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String diffHeader = "diff --git a/FOO b/FOO\n" //
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+ "deleted file mode " + GITLINK + "\n"
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+ "index "
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+ adId.abbreviate(8).name()
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+ ".."
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+ ObjectId.zeroId().abbreviate(8).name() + "\n" //
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+ "--- a/FOO\n"//
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+ "+++ /dev/null\n";
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assertEquals(diffHeader, RawParseUtils.decode(fh.getBuffer()));
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assertEquals(1, fh.getHunks().size());
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HunkHeader hh = fh.getHunks().get(0);
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EditList el = hh.toEditList();
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assertEquals(1, el.size());
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Edit e = el.get(0);
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assertEquals(0, e.getBeginA());
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assertEquals(1, e.getEndA());
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assertEquals(0, e.getBeginB());
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assertEquals(0, e.getEndB());
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assertEquals(Edit.Type.DELETE, e.getType());
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}
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@Test
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public void testCreateFileHeaderWithoutIndexLine() throws Exception {
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DiffEntry m = DiffEntry.modify(PATH_A);
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m.oldMode = FileMode.REGULAR_FILE;
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m.newMode = FileMode.EXECUTABLE_FILE;
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FileHeader fh = df.toFileHeader(m);
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String expected = DIFF + "a/src/a b/src/a\n" + //
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"old mode 100644\n" + //
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"new mode 100755\n";
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assertEquals(expected, fh.getScriptText());
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}
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@Test
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public void testCreateFileHeaderForRenameWithoutContentChange() throws Exception {
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DiffEntry a = DiffEntry.delete(PATH_A, ObjectId.zeroId());
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DiffEntry b = DiffEntry.add(PATH_B, ObjectId.zeroId());
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DiffEntry m = DiffEntry.pair(ChangeType.RENAME, a, b, 100);
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m.oldId = null;
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m.newId = null;
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FileHeader fh = df.toFileHeader(m);
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String expected = DIFF + "a/src/a b/src/b\n" + //
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"similarity index 100%\n" + //
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"rename from src/a\n" + //
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"rename to src/b\n";
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assertEquals(expected, fh.getScriptText());
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}
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@Test
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public void testCreateFileHeaderForRenameModeChange()
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throws Exception {
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DiffEntry a = DiffEntry.delete(PATH_A, ObjectId.zeroId());
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DiffEntry b = DiffEntry.add(PATH_B, ObjectId.zeroId());
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b.oldMode = FileMode.REGULAR_FILE;
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b.newMode = FileMode.EXECUTABLE_FILE;
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DiffEntry m = DiffEntry.pair(ChangeType.RENAME, a, b, 100);
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m.oldId = null;
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m.newId = null;
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FileHeader fh = df.toFileHeader(m);
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//@formatter:off
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String expected = DIFF + "a/src/a b/src/b\n" +
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"old mode 100644\n" +
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"new mode 100755\n" +
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"similarity index 100%\n" +
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"rename from src/a\n" +
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"rename to src/b\n";
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//@formatter:on
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assertEquals(expected, fh.getScriptText());
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}
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@Test
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public void testDiff() throws Exception {
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write(new File(db.getDirectory().getParent(), "test.txt"), "test");
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File folder = new File(db.getDirectory().getParent(), "folder");
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FileUtils.mkdir(folder);
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write(new File(folder, "folder.txt"), "folder");
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try (Git git = new Git(db);
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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DiffFormatter dfmt = new DiffFormatter(new BufferedOutputStream(os))) {
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git.add().addFilepattern(".").call();
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git.commit().setMessage("Initial commit").call();
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write(new File(folder, "folder.txt"), "folder change");
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dfmt.setRepository(db);
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dfmt.setPathFilter(PathFilter.create("folder"));
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DirCacheIterator oldTree = new DirCacheIterator(db.readDirCache());
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FileTreeIterator newTree = new FileTreeIterator(db);
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dfmt.format(oldTree, newTree);
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dfmt.flush();
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String actual = os.toString("UTF-8");
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String expected =
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"diff --git a/folder/folder.txt b/folder/folder.txt\n"
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+ "index 0119635..95c4c65 100644\n"
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+ "--- a/folder/folder.txt\n" + "+++ b/folder/folder.txt\n"
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+ "@@ -1 +1 @@\n" + "-folder\n"
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+ "\\ No newline at end of file\n" + "+folder change\n"
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+ "\\ No newline at end of file\n";
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assertEquals(expected, actual);
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}
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}
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@Test
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public void testDiffRootNullToTree() throws Exception {
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write(new File(db.getDirectory().getParent(), "test.txt"), "test");
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File folder = new File(db.getDirectory().getParent(), "folder");
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FileUtils.mkdir(folder);
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write(new File(folder, "folder.txt"), "folder");
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try (Git git = new Git(db);
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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DiffFormatter dfmt = new DiffFormatter(new BufferedOutputStream(os))) {
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git.add().addFilepattern(".").call();
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RevCommit commit = git.commit().setMessage("Initial commit").call();
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write(new File(folder, "folder.txt"), "folder change");
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dfmt.setRepository(db);
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dfmt.setPathFilter(PathFilter.create("folder"));
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dfmt.format(null, commit.getTree().getId());
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dfmt.flush();
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String actual = os.toString("UTF-8");
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String expected = "diff --git a/folder/folder.txt b/folder/folder.txt\n"
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+ "new file mode 100644\n"
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+ "index 0000000..0119635\n"
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+ "--- /dev/null\n"
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+ "+++ b/folder/folder.txt\n"
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+ "@@ -0,0 +1 @@\n"
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+ "+folder\n"
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+ "\\ No newline at end of file\n";
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assertEquals(expected, actual);
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}
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}
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@Test
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public void testDiffRootTreeToNull() throws Exception {
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write(new File(db.getDirectory().getParent(), "test.txt"), "test");
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File folder = new File(db.getDirectory().getParent(), "folder");
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FileUtils.mkdir(folder);
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write(new File(folder, "folder.txt"), "folder");
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try (Git git = new Git(db);
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ByteArrayOutputStream os = new ByteArrayOutputStream();
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DiffFormatter dfmt = new DiffFormatter(new BufferedOutputStream(os));) {
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git.add().addFilepattern(".").call();
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RevCommit commit = git.commit().setMessage("Initial commit").call();
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write(new File(folder, "folder.txt"), "folder change");
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dfmt.setRepository(db);
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dfmt.setPathFilter(PathFilter.create("folder"));
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dfmt.format(commit.getTree().getId(), null);
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dfmt.flush();
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String actual = os.toString("UTF-8");
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String expected = "diff --git a/folder/folder.txt b/folder/folder.txt\n"
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+ "deleted file mode 100644\n"
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+ "index 0119635..0000000\n"
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+ "--- a/folder/folder.txt\n"
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+ "+++ /dev/null\n"
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+ "@@ -1 +0,0 @@\n"
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+ "-folder\n"
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+ "\\ No newline at end of file\n";
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assertEquals(expected, actual);
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}
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}
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@Test
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public void testDiffNullToNull() throws Exception {
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try (ByteArrayOutputStream os = new ByteArrayOutputStream();
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DiffFormatter dfmt = new DiffFormatter(new BufferedOutputStream(os))) {
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dfmt.setRepository(db);
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dfmt.format((AnyObjectId) null, null);
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dfmt.flush();
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String actual = os.toString("UTF-8");
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String expected = "";
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|
|
assertEquals(expected, actual);
|
|
}
|
|
}
|
|
|
|
private static String makeDiffHeader(String pathA, String pathB,
|
|
ObjectId aId,
|
|
ObjectId bId) {
|
|
String a = aId.abbreviate(8).name();
|
|
String b = bId.abbreviate(8).name();
|
|
return DIFF + "a/" + pathA + " " + "b/" + pathB + "\n" + //
|
|
"index " + a + ".." + b + " " + REGULAR_FILE + "\n" + //
|
|
"--- a/" + pathA + "\n" + //
|
|
"+++ b/" + pathB + "\n";
|
|
}
|
|
|
|
private static String makeDiffHeaderModeChange(String pathA, String pathB,
|
|
ObjectId aId, ObjectId bId, String modeA, String modeB) {
|
|
String a = aId.abbreviate(8).name();
|
|
String b = bId.abbreviate(8).name();
|
|
return DIFF + "a/" + pathA + " " + "b/" + pathB + "\n" + //
|
|
"old mode " + modeA + "\n" + //
|
|
"new mode " + modeB + "\n" + //
|
|
"index " + a + ".." + b + "\n" + //
|
|
"--- a/" + pathA + "\n" + //
|
|
"+++ b/" + pathB + "\n";
|
|
}
|
|
|
|
private ObjectId blob(String content) throws Exception {
|
|
return testDb.blob(content).copy();
|
|
}
|
|
}
|