/*
* Copyright (C) 2011, 2013 Dariusz Luksza <dariusz@luksza.org>
* 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
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* INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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package org.eclipse.jgit.diff;
import static org.eclipse.jgit.diff.DiffEntry.DEV_NULL;
import static org.eclipse.jgit.util.FileUtils.delete;
import static org.hamcrest.CoreMatchers.is;
import static org.hamcrest.CoreMatchers.notNullValue;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertThat;
import static org.junit.Assert.assertTrue;
import java.io.File;
import java.util.List;
import org.eclipse.jgit.api.Git;
import org.eclipse.jgit.diff.DiffEntry.ChangeType;
import org.eclipse.jgit.dircache.DirCache;
import org.eclipse.jgit.dircache.DirCacheEditor;
import org.eclipse.jgit.dircache.DirCacheEditor.PathEdit;
import org.eclipse.jgit.dircache.DirCacheEntry;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.revwalk.RevCommit;
import org.eclipse.jgit.treewalk.EmptyTreeIterator;
import org.eclipse.jgit.treewalk.FileTreeIterator;
import org.eclipse.jgit.treewalk.TreeWalk;
import org.eclipse.jgit.treewalk.filter.PathFilterGroup;
import org.eclipse.jgit.treewalk.filter.TreeFilter;
import org.eclipse.jgit.util.FileUtils;
import org.junit.Test;
public class DiffEntryTest extends RepositoryTestCase {
@Test
public void shouldListAddedFileInInitialCommit() throws Exception {
// given
writeTrashFile("a.txt", "content");
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
git.add().addFilepattern("a.txt").call();
RevCommit c = git.commit().setMessage("initial commit").call();
// when
walk.addTree(new EmptyTreeIterator());
walk.addTree(c.getTree());
List<DiffEntry> result = DiffEntry.scan(walk);
// then
assertThat(result, notNullValue());
assertThat(Integer.valueOf(result.size()), is(Integer.valueOf(1)));
DiffEntry entry = result.get(0);
assertThat(entry.getChangeType(), is(ChangeType.ADD));
assertThat(entry.getNewPath(), is("a.txt"));
assertThat(entry.getOldPath(), is(DEV_NULL));
}
}
@Test
public void shouldListAddedFileBetweenTwoCommits() throws Exception {
// given
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
RevCommit c1 = git.commit().setMessage("initial commit").call();
writeTrashFile("a.txt", "content");
git.add().addFilepattern("a.txt").call();
RevCommit c2 = git.commit().setMessage("second commit").call();
// when
walk.addTree(c1.getTree());
walk.addTree(c2.getTree());
List<DiffEntry> result = DiffEntry.scan(walk);
// then
assertThat(result, notNullValue());
assertThat(Integer.valueOf(result.size()), is(Integer.valueOf(1)));
DiffEntry entry = result.get(0);
assertThat(entry.getChangeType(), is(ChangeType.ADD));
assertThat(entry.getNewPath(), is("a.txt"));
assertThat(entry.getOldPath(), is(DEV_NULL));
}
}
@Test
public void shouldListModificationBetweenTwoCommits() throws Exception {
// given
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
File file = writeTrashFile("a.txt", "content");
git.add().addFilepattern("a.txt").call();
RevCommit c1 = git.commit().setMessage("initial commit").call();
write(file, "new content");
RevCommit c2 = git.commit().setAll(true).setMessage("second commit")
.call();
// when
walk.addTree(c1.getTree());
walk.addTree(c2.getTree());
List<DiffEntry> result = DiffEntry.scan(walk);
// then
assertThat(result, notNullValue());
assertThat(Integer.valueOf(result.size()), is(Integer.valueOf(1)));
DiffEntry entry = result.get(0);
assertThat(entry.getChangeType(), is(ChangeType.MODIFY));
assertThat(entry.getNewPath(), is("a.txt"));
}
}
@Test
public void shouldListDeletionBetweenTwoCommits() throws Exception {
// given
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
File file = writeTrashFile("a.txt", "content");
git.add().addFilepattern("a.txt").call();
RevCommit c1 = git.commit().setMessage("initial commit").call();
delete(file);
RevCommit c2 = git.commit().setAll(true).setMessage("delete a.txt")
.call();
// when
walk.addTree(c1.getTree());
walk.addTree(c2.getTree());
List<DiffEntry> result = DiffEntry.scan(walk);
// then
assertThat(result, notNullValue());
assertThat(Integer.valueOf(result.size()), is(Integer.valueOf(1)));
DiffEntry entry = result.get(0);
assertThat(entry.getOldPath(), is("a.txt"));
assertThat(entry.getNewPath(), is(DEV_NULL));
assertThat(entry.getChangeType(), is(ChangeType.DELETE));
}
}
@Test
public void shouldListModificationInDirWithoutModifiedTrees()
throws Exception {
// given
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
File tree = new File(new File(db.getWorkTree(), "a"), "b");
FileUtils.mkdirs(tree);
File file = new File(tree, "c.txt");
FileUtils.createNewFile(file);
write(file, "content");
git.add().addFilepattern("a").call();
RevCommit c1 = git.commit().setMessage("initial commit").call();
write(file, "new line");
RevCommit c2 = git.commit().setAll(true).setMessage("second commit")
.call();
// when
walk.addTree(c1.getTree());
walk.addTree(c2.getTree());
walk.setRecursive(true);
List<DiffEntry> result = DiffEntry.scan(walk);
// then
assertThat(result, notNullValue());
assertThat(Integer.valueOf(result.size()), is(Integer.valueOf(1)));
DiffEntry entry = result.get(0);
assertThat(entry.getChangeType(), is(ChangeType.MODIFY));
assertThat(entry.getNewPath(), is("a/b/c.txt"));
}
}
@Test
public void shouldListModificationInDirWithModifiedTrees() throws Exception {
// given
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
File tree = new File(new File(db.getWorkTree(), "a"), "b");
FileUtils.mkdirs(tree);
File file = new File(tree, "c.txt");
FileUtils.createNewFile(file);
write(file, "content");
git.add().addFilepattern("a").call();
RevCommit c1 = git.commit().setMessage("initial commit").call();
write(file, "new line");
RevCommit c2 = git.commit().setAll(true).setMessage("second commit")
.call();
// when
walk.addTree(c1.getTree());
walk.addTree(c2.getTree());
List<DiffEntry> result = DiffEntry.scan(walk, true);
// then
assertThat(result, notNullValue());
assertThat(Integer.valueOf(result.size()), is(Integer.valueOf(3)));
DiffEntry entry = result.get(0);
assertThat(entry.getChangeType(), is(ChangeType.MODIFY));
assertThat(entry.getNewPath(), is("a"));
entry = result.get(1);
assertThat(entry.getChangeType(), is(ChangeType.MODIFY));
assertThat(entry.getNewPath(), is("a/b"));
entry = result.get(2);
assertThat(entry.getChangeType(), is(ChangeType.MODIFY));
assertThat(entry.getNewPath(), is("a/b/c.txt"));
}
}
@Test
public void shouldListChangesInWorkingTree() throws Exception {
// given
writeTrashFile("a.txt", "content");
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
git.add().addFilepattern("a.txt").call();
RevCommit c = git.commit().setMessage("initial commit").call();
writeTrashFile("b.txt", "new line");
// when
walk.addTree(c.getTree());
walk.addTree(new FileTreeIterator(db));
List<DiffEntry> result = DiffEntry.scan(walk, true);
// then
assertThat(Integer.valueOf(result.size()), is(Integer.valueOf(1)));
DiffEntry entry = result.get(0);
assertThat(entry.getChangeType(), is(ChangeType.ADD));
assertThat(entry.getNewPath(), is("b.txt"));
}
}
@Test
public void shouldMarkEntriesWhenGivenMarkTreeFilter() throws Exception {
// given
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
RevCommit c1 = git.commit().setMessage("initial commit").call();
FileUtils.mkdir(new File(db.getWorkTree(), "b"));
writeTrashFile("a.txt", "a");
writeTrashFile("b/1.txt", "b1");
writeTrashFile("b/2.txt", "b2");
writeTrashFile("c.txt", "c");
git.add().addFilepattern("a.txt").addFilepattern("b")
.addFilepattern("c.txt").call();
RevCommit c2 = git.commit().setMessage("second commit").call();
TreeFilter filterA = PathFilterGroup.createFromStrings("a.txt");
TreeFilter filterB = PathFilterGroup.createFromStrings("b");
TreeFilter filterB2 = PathFilterGroup.createFromStrings("b/2.txt");
// when
walk.addTree(c1.getTree());
walk.addTree(c2.getTree());
List<DiffEntry> result = DiffEntry.scan(walk, true, new TreeFilter[] {
filterA, filterB, filterB2 });
// then
assertThat(result, notNullValue());
assertEquals(5, result.size());
DiffEntry entryA = result.get(0);
DiffEntry entryB = result.get(1);
DiffEntry entryB1 = result.get(2);
DiffEntry entryB2 = result.get(3);
DiffEntry entryC = result.get(4);
assertThat(entryA.getNewPath(), is("a.txt"));
assertTrue(entryA.isMarked(0));
assertFalse(entryA.isMarked(1));
assertFalse(entryA.isMarked(2));
assertEquals(1, entryA.getTreeFilterMarks());
assertThat(entryB.getNewPath(), is("b"));
assertFalse(entryB.isMarked(0));
assertTrue(entryB.isMarked(1));
assertTrue(entryB.isMarked(2));
assertEquals(6, entryB.getTreeFilterMarks());
assertThat(entryB1.getNewPath(), is("b/1.txt"));
assertFalse(entryB1.isMarked(0));
assertTrue(entryB1.isMarked(1));
assertFalse(entryB1.isMarked(2));
assertEquals(2, entryB1.getTreeFilterMarks());
assertThat(entryB2.getNewPath(), is("b/2.txt"));
assertFalse(entryB2.isMarked(0));
assertTrue(entryB2.isMarked(1));
assertTrue(entryB2.isMarked(2));
assertEquals(6, entryB2.getTreeFilterMarks());
assertThat(entryC.getNewPath(), is("c.txt"));
assertFalse(entryC.isMarked(0));
assertFalse(entryC.isMarked(1));
assertFalse(entryC.isMarked(2));
assertEquals(0, entryC.getTreeFilterMarks());
}
}
@Test(expected = IllegalArgumentException.class)
public void shouldThrowIAEWhenTreeWalkHasLessThanTwoTrees()
throws Exception {
// given - we don't need anything here
// when
try (TreeWalk walk = new TreeWalk(db)) {
walk.addTree(new EmptyTreeIterator());
DiffEntry.scan(walk);
}
}
@Test(expected = IllegalArgumentException.class)
public void shouldThrowIAEWhenTreeWalkHasMoreThanTwoTrees()
throws Exception {
// given - we don't need anything here
// when
try (TreeWalk walk = new TreeWalk(db)) {
walk.addTree(new EmptyTreeIterator());
walk.addTree(new EmptyTreeIterator());
walk.addTree(new EmptyTreeIterator());
DiffEntry.scan(walk);
}
}
@Test(expected = IllegalArgumentException.class)
public void shouldThrowIAEWhenScanShouldIncludeTreesAndWalkIsRecursive()
throws Exception {
// given - we don't need anything here
// when
try (TreeWalk walk = new TreeWalk(db)) {
walk.addTree(new EmptyTreeIterator());
walk.addTree(new EmptyTreeIterator());
walk.setRecursive(true);
DiffEntry.scan(walk, true);
}
}
@Test
public void shouldReportFileModeChange() throws Exception {
writeTrashFile("a.txt", "content");
try (Git git = new Git(db);
TreeWalk walk = new TreeWalk(db)) {
git.add().addFilepattern("a.txt").call();
RevCommit c1 = git.commit().setMessage("initial commit").call();
DirCache cache = db.lockDirCache();
DirCacheEditor editor = cache.editor();
walk.addTree(c1.getTree());
walk.setRecursive(true);
assertTrue(walk.next());
editor.add(new PathEdit("a.txt") {
public void apply(DirCacheEntry ent) {
ent.setFileMode(FileMode.EXECUTABLE_FILE);
ent.setObjectId(walk.getObjectId(0));
}
});
assertTrue(editor.commit());
RevCommit c2 = git.commit().setMessage("second commit").call();
walk.reset();
walk.addTree(c1.getTree());
walk.addTree(c2.getTree());
List<DiffEntry> diffs = DiffEntry.scan(walk, false);
assertEquals(1, diffs.size());
DiffEntry diff = diffs.get(0);
assertEquals(ChangeType.MODIFY,diff.getChangeType());
assertEquals(diff.getOldId(), diff.getNewId());
assertEquals("a.txt", diff.getOldPath());
assertEquals(diff.getOldPath(), diff.getNewPath());
assertEquals(FileMode.EXECUTABLE_FILE, diff.getNewMode());
assertEquals(FileMode.REGULAR_FILE, diff.getOldMode());
}
}
}