/*
* Copyright (C) 2010, Christian Halstrick <christian.halstrick@sap.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
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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package org.eclipse.jgit.api;
import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertFalse;
import static org.junit.Assert.assertNotNull;
import static org.junit.Assert.assertTrue;
import static org.junit.Assert.fail;
import java.io.File;
import java.io.IOException;
import java.util.Iterator;
import org.eclipse.jgit.api.CherryPickResult.CherryPickStatus;
import org.eclipse.jgit.api.ResetCommand.ResetType;
import org.eclipse.jgit.api.errors.GitAPIException;
import org.eclipse.jgit.api.errors.JGitInternalException;
import org.eclipse.jgit.api.errors.MultipleParentsNotAllowedException;
import org.eclipse.jgit.dircache.DirCache;
import org.eclipse.jgit.junit.RepositoryTestCase;
import org.eclipse.jgit.lib.ConfigConstants;
import org.eclipse.jgit.lib.Constants;
import org.eclipse.jgit.lib.FileMode;
import org.eclipse.jgit.lib.ObjectId;
import org.eclipse.jgit.lib.ReflogReader;
import org.eclipse.jgit.lib.RepositoryState;
import org.eclipse.jgit.merge.ResolveMerger.MergeFailureReason;
import org.eclipse.jgit.revwalk.RevCommit;
import org.junit.Test;
/**
* Test cherry-pick command
*/
public class CherryPickCommandTest extends RepositoryTestCase {
@Test
public void testCherryPick() throws IOException, JGitInternalException,
GitAPIException {
doTestCherryPick(false);
}
@Test
public void testCherryPickNoCommit() throws IOException,
JGitInternalException, GitAPIException {
doTestCherryPick(true);
}
private void doTestCherryPick(boolean noCommit) throws IOException,
JGitInternalException,
GitAPIException {
Git git = new Git(db);
writeTrashFile("a", "first line\nsec. line\nthird line\n");
git.add().addFilepattern("a").call();
RevCommit firstCommit = git.commit().setMessage("create a").call();
writeTrashFile("b", "content\n");
git.add().addFilepattern("b").call();
git.commit().setMessage("create b").call();
writeTrashFile("a", "first line\nsec. line\nthird line\nfourth line\n");
git.add().addFilepattern("a").call();
git.commit().setMessage("enlarged a").call();
writeTrashFile("a",
"first line\nsecond line\nthird line\nfourth line\n");
git.add().addFilepattern("a").call();
RevCommit fixingA = git.commit().setMessage("fixed a").call();
git.branchCreate().setName("side").setStartPoint(firstCommit).call();
checkoutBranch("refs/heads/side");
writeTrashFile("a", "first line\nsec. line\nthird line\nfeature++\n");
git.add().addFilepattern("a").call();
git.commit().setMessage("enhanced a").call();
CherryPickResult pickResult = git.cherryPick().include(fixingA)
.setNoCommit(noCommit).call();
assertEquals(CherryPickStatus.OK, pickResult.getStatus());
assertFalse(new File(db.getWorkTree(), "b").exists());
checkFile(new File(db.getWorkTree(), "a"),
"first line\nsecond line\nthird line\nfeature++\n");
Iterator<RevCommit> history = git.log().call().iterator();
if (!noCommit)
assertEquals("fixed a", history.next().getFullMessage());
assertEquals("enhanced a", history.next().getFullMessage());
assertEquals("create a", history.next().getFullMessage());
assertFalse(history.hasNext());
}
@Test
public void testSequentialCherryPick() throws IOException, JGitInternalException,
GitAPIException {
Git git = new Git(db);
writeTrashFile("a", "first line\nsec. line\nthird line\n");
git.add().addFilepattern("a").call();
RevCommit firstCommit = git.commit().setMessage("create a").call();
writeTrashFile("a", "first line\nsec. line\nthird line\nfourth line\n");
git.add().addFilepattern("a").call();
RevCommit enlargingA = git.commit().setMessage("enlarged a").call();
writeTrashFile("a",
"first line\nsecond line\nthird line\nfourth line\n");
git.add().addFilepattern("a").call();
RevCommit fixingA = git.commit().setMessage("fixed a").call();
git.branchCreate().setName("side").setStartPoint(firstCommit).call();
checkoutBranch("refs/heads/side");
writeTrashFile("b", "nothing to do with a");
git.add().addFilepattern("b").call();
git.commit().setMessage("create b").call();
CherryPickResult result = git.cherryPick().include(enlargingA).include(fixingA).call();
assertEquals(CherryPickResult.CherryPickStatus.OK, result.getStatus());
Iterator<RevCommit> history = git.log().call().iterator();
assertEquals("fixed a", history.next().getFullMessage());
assertEquals("enlarged a", history.next().getFullMessage());
assertEquals("create b", history.next().getFullMessage());
assertEquals("create a", history.next().getFullMessage());
assertFalse(history.hasNext());
}
@Test
public void testCherryPickDirtyIndex() throws Exception {
Git git = new Git(db);
RevCommit sideCommit = prepareCherryPick(git);
// modify and add file a
writeTrashFile("a", "a(modified)");
git.add().addFilepattern("a").call();
// do not commit
doCherryPickAndCheckResult(git, sideCommit,
MergeFailureReason.DIRTY_INDEX);
}
@Test
public void testCherryPickDirtyWorktree() throws Exception {
Git git = new Git(db);
RevCommit sideCommit = prepareCherryPick(git);
// modify file a
writeTrashFile("a", "a(modified)");
// do not add and commit
doCherryPickAndCheckResult(git, sideCommit,
MergeFailureReason.DIRTY_WORKTREE);
}
@Test
public void testCherryPickConflictResolution() throws Exception {
Git git = new Git(db);
RevCommit sideCommit = prepareCherryPick(git);
CherryPickResult result = git.cherryPick().include(sideCommit.getId())
.call();
assertEquals(CherryPickStatus.CONFLICTING, result.getStatus());
assertTrue(new File(db.getDirectory(), Constants.MERGE_MSG).exists());
assertEquals("side\n\nConflicts:\n\ta\n", db.readMergeCommitMsg());
assertTrue(new File(db.getDirectory(), Constants.CHERRY_PICK_HEAD)
.exists());
assertEquals(sideCommit.getId(), db.readCherryPickHead());
assertEquals(RepositoryState.CHERRY_PICKING, db.getRepositoryState());
// Resolve
writeTrashFile("a", "a");
git.add().addFilepattern("a").call();
assertEquals(RepositoryState.CHERRY_PICKING_RESOLVED,
db.getRepositoryState());
git.commit().setOnly("a").setMessage("resolve").call();
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
}
@Test
public void testCherryPickConflictResolutionNoCOmmit() throws Exception {
Git git = new Git(db);
RevCommit sideCommit = prepareCherryPick(git);
CherryPickResult result = git.cherryPick().include(sideCommit.getId())
.setNoCommit(true).call();
assertEquals(CherryPickStatus.CONFLICTING, result.getStatus());
assertTrue(db.readDirCache().hasUnmergedPaths());
String expected = "<<<<<<< master\na(master)\n=======\na(side)\n>>>>>>> 527460a side\n";
assertEquals(expected, read("a"));
assertTrue(new File(db.getDirectory(), Constants.MERGE_MSG).exists());
assertEquals("side\n\nConflicts:\n\ta\n", db.readMergeCommitMsg());
assertFalse(new File(db.getDirectory(), Constants.CHERRY_PICK_HEAD)
.exists());
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
// Resolve
writeTrashFile("a", "a");
git.add().addFilepattern("a").call();
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
git.commit().setOnly("a").setMessage("resolve").call();
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
}
@Test
public void testCherryPickConflictReset() throws Exception {
Git git = new Git(db);
RevCommit sideCommit = prepareCherryPick(git);
CherryPickResult result = git.cherryPick().include(sideCommit.getId())
.call();
assertEquals(CherryPickStatus.CONFLICTING, result.getStatus());
assertEquals(RepositoryState.CHERRY_PICKING, db.getRepositoryState());
assertTrue(new File(db.getDirectory(), Constants.CHERRY_PICK_HEAD)
.exists());
git.reset().setMode(ResetType.MIXED).setRef("HEAD").call();
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
assertFalse(new File(db.getDirectory(), Constants.CHERRY_PICK_HEAD)
.exists());
}
@Test
public void testCherryPickOverExecutableChangeOnNonExectuableFileSystem()
throws Exception {
Git git = new Git(db);
File file = writeTrashFile("test.txt", "a");
assertNotNull(git.add().addFilepattern("test.txt").call());
assertNotNull(git.commit().setMessage("commit1").call());
assertNotNull(git.checkout().setCreateBranch(true).setName("a").call());
writeTrashFile("test.txt", "b");
assertNotNull(git.add().addFilepattern("test.txt").call());
RevCommit commit2 = git.commit().setMessage("commit2").call();
assertNotNull(commit2);
assertNotNull(git.checkout().setName(Constants.MASTER).call());
DirCache cache = db.lockDirCache();
cache.getEntry("test.txt").setFileMode(FileMode.EXECUTABLE_FILE);
cache.write();
assertTrue(cache.commit());
cache.unlock();
assertNotNull(git.commit().setMessage("commit3").call());
db.getFS().setExecute(file, false);
git.getRepository()
.getConfig()
.setBoolean(ConfigConstants.CONFIG_CORE_SECTION, null,
ConfigConstants.CONFIG_KEY_FILEMODE, false);
CherryPickResult result = git.cherryPick().include(commit2).call();
assertNotNull(result);
assertEquals(CherryPickStatus.OK, result.getStatus());
}
@Test
public void testCherryPickConflictMarkers() throws Exception {
Git git = new Git(db);
RevCommit sideCommit = prepareCherryPick(git);
CherryPickResult result = git.cherryPick().include(sideCommit.getId())
.call();
assertEquals(CherryPickStatus.CONFLICTING, result.getStatus());
String expected = "<<<<<<< master\na(master)\n=======\na(side)\n>>>>>>> 527460a side\n";
checkFile(new File(db.getWorkTree(), "a"), expected);
}
@Test
public void testCherryPickOurCommitName() throws Exception {
Git git = new Git(db);
RevCommit sideCommit = prepareCherryPick(git);
CherryPickResult result = git.cherryPick().include(sideCommit.getId())
.setOurCommitName("custom name").call();
assertEquals(CherryPickStatus.CONFLICTING, result.getStatus());
String expected = "<<<<<<< custom name\na(master)\n=======\na(side)\n>>>>>>> 527460a side\n";
checkFile(new File(db.getWorkTree(), "a"), expected);
}
private RevCommit prepareCherryPick(final Git git) throws Exception {
// create, add and commit file a
writeTrashFile("a", "a");
git.add().addFilepattern("a").call();
RevCommit firstMasterCommit = git.commit().setMessage("first master")
.call();
// create and checkout side branch
createBranch(firstMasterCommit, "refs/heads/side");
checkoutBranch("refs/heads/side");
// modify, add and commit file a
writeTrashFile("a", "a(side)");
git.add().addFilepattern("a").call();
RevCommit sideCommit = git.commit().setMessage("side").call();
// checkout master branch
checkoutBranch("refs/heads/master");
// modify, add and commit file a
writeTrashFile("a", "a(master)");
git.add().addFilepattern("a").call();
git.commit().setMessage("second master").call();
return sideCommit;
}
private void doCherryPickAndCheckResult(final Git git,
final RevCommit sideCommit, final MergeFailureReason reason)
throws Exception {
// get current index state
String indexState = indexState(CONTENT);
// cherry-pick
CherryPickResult result = git.cherryPick().include(sideCommit.getId())
.call();
assertEquals(CherryPickStatus.FAILED, result.getStatus());
// staged file a causes DIRTY_INDEX
assertEquals(1, result.getFailingPaths().size());
assertEquals(reason, result.getFailingPaths().get("a"));
assertEquals("a(modified)", read(new File(db.getWorkTree(), "a")));
// index shall be unchanged
assertEquals(indexState, indexState(CONTENT));
assertEquals(RepositoryState.SAFE, db.getRepositoryState());
if (reason == null) {
ReflogReader reader = db.getReflogReader(Constants.HEAD);
assertTrue(reader.getLastEntry().getComment()
.startsWith("cherry-pick: "));
reader = db.getReflogReader(db.getBranch());
assertTrue(reader.getLastEntry().getComment()
.startsWith("cherry-pick: "));
}
}
/**
* Cherry-picking merge commit M onto T
* <pre>
* M
* |\
* C D
* |/
* T B
* | /
* A
* </pre>
* @throws Exception
*/
@Test
public void testCherryPickMerge() throws Exception {
Git git = new Git(db);
commitFile("file", "1\n2\n3\n", "master");
commitFile("file", "1\n2\n3\n", "side");
checkoutBranch("refs/heads/side");
RevCommit commitD = commitFile("file", "1\n2\n3\n4\n5\n", "side2");
commitFile("file", "a\n2\n3\n", "side");
MergeResult mergeResult = git.merge().include(commitD).call();
ObjectId commitM = mergeResult.getNewHead();
checkoutBranch("refs/heads/master");
RevCommit commitT = commitFile("another", "t", "master");
try {
git.cherryPick().include(commitM).call();
fail("merges should not be cherry-picked by default");
} catch (MultipleParentsNotAllowedException e) {
// expected
}
try {
git.cherryPick().include(commitM).setMainlineParentNumber(3).call();
fail("specifying a non-existent parent should fail");
} catch (JGitInternalException e) {
// expected
assertTrue(e.getMessage().endsWith(
"does not have a parent number 3."));
}
CherryPickResult result = git.cherryPick().include(commitM)
.setMainlineParentNumber(1).call();
assertEquals(CherryPickStatus.OK, result.getStatus());
checkFile(new File(db.getWorkTree(), "file"), "1\n2\n3\n4\n5\n");
git.reset().setMode(ResetType.HARD).setRef(commitT.getName()).call();
CherryPickResult result2 = git.cherryPick().include(commitM)
.setMainlineParentNumber(2).call();
assertEquals(CherryPickStatus.OK, result2.getStatus());
checkFile(new File(db.getWorkTree(), "file"), "a\n2\n3\n");
}
}