| /* |
| * Copyright (C) 2019, Google LLC. |
| * 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.revwalk; |
| |
| import static org.junit.Assert.assertFalse; |
| import static org.junit.Assert.assertTrue; |
| |
| import java.util.Arrays; |
| import java.util.Optional; |
| import java.util.stream.Stream; |
| |
| import org.eclipse.jgit.internal.storage.file.FileRepository; |
| import org.eclipse.jgit.junit.LocalDiskRepositoryTestCase; |
| import org.eclipse.jgit.junit.TestRepository; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public abstract class ReachabilityCheckerTestCase |
| extends LocalDiskRepositoryTestCase { |
| |
| protected abstract ReachabilityChecker getChecker( |
| TestRepository<FileRepository> repository) throws Exception; |
| |
| TestRepository<FileRepository> repo; |
| |
| /** {@inheritDoc} */ |
| @Override |
| @Before |
| public void setUp() throws Exception { |
| super.setUp(); |
| FileRepository db = createWorkRepository(); |
| repo = new TestRepository<>(db); |
| } |
| |
| @Test |
| public void reachable() throws Exception { |
| RevCommit a = repo.commit().create(); |
| RevCommit b1 = repo.commit(a); |
| RevCommit b2 = repo.commit(b1); |
| RevCommit c1 = repo.commit(a); |
| RevCommit c2 = repo.commit(c1); |
| repo.update("refs/heads/checker", b2); |
| |
| ReachabilityChecker checker = getChecker(repo); |
| |
| assertReachable("reachable from one tip", |
| checker.areAllReachable(Arrays.asList(a), Stream.of(c2))); |
| assertReachable("reachable from another tip", |
| checker.areAllReachable(Arrays.asList(a), Stream.of(b2))); |
| assertReachable("reachable from itself", |
| checker.areAllReachable(Arrays.asList(a), Stream.of(b2))); |
| } |
| |
| @Test |
| public void reachable_merge() throws Exception { |
| RevCommit a = repo.commit().create(); |
| RevCommit b1 = repo.commit(a); |
| RevCommit b2 = repo.commit(b1); |
| RevCommit c1 = repo.commit(a); |
| RevCommit c2 = repo.commit(c1); |
| RevCommit merge = repo.commit(c2, b2); |
| repo.update("refs/heads/checker", merge); |
| |
| ReachabilityChecker checker = getChecker(repo); |
| |
| assertReachable("reachable through one branch", |
| checker.areAllReachable(Arrays.asList(b1), |
| Stream.of(merge))); |
| assertReachable("reachable through another branch", |
| checker.areAllReachable(Arrays.asList(c1), |
| Stream.of(merge))); |
| assertReachable("reachable, before the branching", |
| checker.areAllReachable(Arrays.asList(a), |
| Stream.of(merge))); |
| } |
| |
| @Test |
| public void unreachable_isLaterCommit() throws Exception { |
| RevCommit a = repo.commit().create(); |
| RevCommit b1 = repo.commit(a); |
| RevCommit b2 = repo.commit(b1); |
| repo.update("refs/heads/checker", b2); |
| |
| ReachabilityChecker checker = getChecker(repo); |
| |
| assertUnreachable("unreachable from the future", |
| checker.areAllReachable(Arrays.asList(b2), Stream.of(b1))); |
| } |
| |
| @Test |
| public void unreachable_differentBranch() throws Exception { |
| RevCommit a = repo.commit().create(); |
| RevCommit b1 = repo.commit(a); |
| RevCommit b2 = repo.commit(b1); |
| RevCommit c1 = repo.commit(a); |
| repo.update("refs/heads/checker", b2); |
| |
| ReachabilityChecker checker = getChecker(repo); |
| |
| assertUnreachable("unreachable from different branch", |
| checker.areAllReachable(Arrays.asList(c1), Stream.of(b2))); |
| } |
| |
| @Test |
| public void reachable_longChain() throws Exception { |
| RevCommit root = repo.commit().create(); |
| RevCommit head = root; |
| for (int i = 0; i < 10000; i++) { |
| head = repo.commit(head); |
| } |
| repo.update("refs/heads/master", head); |
| |
| ReachabilityChecker checker = getChecker(repo); |
| |
| assertReachable("reachable with long chain in the middle", checker |
| .areAllReachable(Arrays.asList(root), Stream.of(head))); |
| } |
| |
| private static void assertReachable(String msg, |
| Optional<RevCommit> result) { |
| assertFalse(msg, result.isPresent()); |
| } |
| |
| private static void assertUnreachable(String msg, |
| Optional<RevCommit> result) { |
| assertTrue(msg, result.isPresent()); |
| } |
| } |