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- /*
- * Copyright (C) 2010, Stefan Lay <stefan.lay@sap.com>
- * 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
- * CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
- * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
- * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
- * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER
- * CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT,
- * STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF
- * ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
- */
- package org.eclipse.jgit.api;
-
- import java.io.File;
- import java.io.IOException;
-
- import org.eclipse.jgit.errors.CheckoutConflictException;
- import org.eclipse.jgit.errors.CorruptObjectException;
- import org.eclipse.jgit.lib.Constants;
- import org.eclipse.jgit.lib.GitIndex;
- import org.eclipse.jgit.lib.ObjectId;
- import org.eclipse.jgit.lib.RefUpdate;
- import org.eclipse.jgit.lib.RepositoryTestCase;
- import org.eclipse.jgit.lib.WorkDirCheckout;
- import org.eclipse.jgit.lib.GitIndex.Entry;
- import org.eclipse.jgit.revwalk.RevCommit;
-
- public class MergeCommandTest extends RepositoryTestCase {
-
- public void testMergeInItself() throws Exception {
- Git git = new Git(db);
- git.commit().setMessage("initial commit").call();
-
- MergeResult result = git.merge().include(db.getRef(Constants.HEAD)).call();
- assertEquals(MergeResult.MergeStatus.ALREADY_UP_TO_DATE, result.getMergeStatus());
- }
-
- public void testAlreadyUpToDate() throws Exception {
- Git git = new Git(db);
- RevCommit first = git.commit().setMessage("initial commit").call();
- createBranch(first, "refs/heads/branch1");
-
- RevCommit second = git.commit().setMessage("second commit").call();
- MergeResult result = git.merge().include(db.getRef("refs/heads/branch1")).call();
- assertEquals(MergeResult.MergeStatus.ALREADY_UP_TO_DATE, result.getMergeStatus());
- assertEquals(second, result.getNewHead());
-
- }
-
- public void testFastForward() throws Exception {
- Git git = new Git(db);
- RevCommit first = git.commit().setMessage("initial commit").call();
- createBranch(first, "refs/heads/branch1");
-
- RevCommit second = git.commit().setMessage("second commit").call();
-
- checkoutBranch("refs/heads/branch1");
-
- MergeResult result = git.merge().include(db.getRef(Constants.MASTER)).call();
-
- assertEquals(MergeResult.MergeStatus.FAST_FORWARD, result.getMergeStatus());
- assertEquals(second, result.getNewHead());
- }
-
- public void testFastForwardWithFiles() throws Exception {
- Git git = new Git(db);
-
- addNewFileToIndex("file1");
- RevCommit first = git.commit().setMessage("initial commit").call();
-
- assertTrue(new File(db.getWorkDir(), "file1").exists());
- createBranch(first, "refs/heads/branch1");
-
- addNewFileToIndex("file2");
- RevCommit second = git.commit().setMessage("second commit").call();
- assertTrue(new File(db.getWorkDir(), "file2").exists());
-
- checkoutBranch("refs/heads/branch1");
- assertFalse(new File(db.getWorkDir(), "file2").exists());
-
- MergeResult result = git.merge().include(db.getRef(Constants.MASTER)).call();
-
- assertTrue(new File(db.getWorkDir(), "file1").exists());
- assertTrue(new File(db.getWorkDir(), "file2").exists());
- assertEquals(MergeResult.MergeStatus.FAST_FORWARD, result.getMergeStatus());
- assertEquals(second, result.getNewHead());
- }
-
- public void testMultipleHeads() throws Exception {
- Git git = new Git(db);
-
- addNewFileToIndex("file1");
- RevCommit first = git.commit().setMessage("initial commit").call();
- createBranch(first, "refs/heads/branch1");
-
- addNewFileToIndex("file2");
- RevCommit second = git.commit().setMessage("second commit").call();
-
- addNewFileToIndex("file3");
- git.commit().setMessage("third commit").call();
-
- checkoutBranch("refs/heads/branch1");
- assertFalse(new File(db.getWorkDir(), "file2").exists());
- assertFalse(new File(db.getWorkDir(), "file3").exists());
-
- MergeCommand merge = git.merge();
- merge.include(second.getId());
- merge.include(db.getRef(Constants.MASTER));
- try {
- merge.call();
- fail("Expected exception not thrown when merging multiple heads");
- } catch (InvalidMergeHeadsException e) {
- }
- }
-
- private void createBranch(ObjectId objectId, String branchName) throws IOException {
- RefUpdate updateRef = db.updateRef(branchName);
- updateRef.setNewObjectId(objectId);
- updateRef.update();
- }
-
- private void checkoutBranch(String branchName) throws Exception {
- File workDir = db.getWorkDir();
- if (workDir != null) {
- WorkDirCheckout workDirCheckout = new WorkDirCheckout(db,
- workDir, db.mapCommit(Constants.HEAD).getTree(),
- db.getIndex(), db.mapCommit(branchName).getTree());
- workDirCheckout.setFailOnConflict(true);
- try {
- workDirCheckout.checkout();
- } catch (CheckoutConflictException e) {
- throw new JGitInternalException(
- "Couldn't check out because of conflicts", e);
- }
- }
-
- // update the HEAD
- RefUpdate refUpdate = db.updateRef(Constants.HEAD);
- refUpdate.link(branchName);
- }
-
- private void addNewFileToIndex(String filename) throws IOException,
- CorruptObjectException {
- File writeTrashFile = writeTrashFile(filename, filename);
-
- GitIndex index = db.getIndex();
- Entry entry = index.add(db.getWorkDir(), writeTrashFile);
- entry.update(writeTrashFile);
- index.write();
- }
- }
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