| /* |
| * Copyright (C) 2011, GEBIT Solutions and others |
| * |
| * This program and the accompanying materials are made available under the |
| * terms of the Eclipse Distribution License v. 1.0 which is available at |
| * https://www.eclipse.org/org/documents/edl-v10.php. |
| * |
| * SPDX-License-Identifier: BSD-3-Clause |
| */ |
| package org.eclipse.jgit.revwalk; |
| |
| import static org.junit.Assert.assertNull; |
| |
| import java.util.ArrayList; |
| import java.util.List; |
| |
| import org.eclipse.jgit.diff.DiffConfig; |
| import org.eclipse.jgit.diff.DiffEntry; |
| import org.eclipse.jgit.junit.TestRepository.CommitBuilder; |
| import org.eclipse.jgit.lib.Config; |
| import org.junit.Assert; |
| import org.junit.Before; |
| import org.junit.Test; |
| |
| public class RevWalkFollowFilterTest extends RevWalkTestCase { |
| |
| private static class DiffCollector extends RenameCallback { |
| List<DiffEntry> diffs = new ArrayList<>(); |
| |
| @Override |
| public void renamed(DiffEntry diff) { |
| diffs.add(diff); |
| } |
| } |
| |
| private DiffCollector diffCollector; |
| |
| @Before |
| @Override |
| public void setUp() throws Exception { |
| super.setUp(); |
| diffCollector = new DiffCollector(); |
| } |
| |
| protected FollowFilter follow(String followPath) { |
| FollowFilter followFilter = |
| FollowFilter.create(followPath, new Config().get(DiffConfig.KEY)); |
| followFilter.setRenameCallback(diffCollector); |
| rw.setTreeFilter(followFilter); |
| return followFilter; |
| } |
| |
| @Test |
| public void testNoRename() throws Exception { |
| final RevCommit a = commit(tree(file("0", blob("0")))); |
| follow("0"); |
| markStart(a); |
| assertCommit(a, rw.next()); |
| assertNull(rw.next()); |
| |
| assertNoRenames(); |
| } |
| |
| @Test |
| public void testSingleRename() throws Exception { |
| final RevCommit a = commit(tree(file("a", blob("A")))); |
| |
| // rename a to b |
| CommitBuilder commitBuilder = commitBuilder().parent(a) |
| .add("b", blob("A")).rm("a"); |
| RevCommit renameCommit = commitBuilder.create(); |
| |
| follow("b"); |
| markStart(renameCommit); |
| assertCommit(renameCommit, rw.next()); |
| assertCommit(a, rw.next()); |
| assertNull(rw.next()); |
| |
| assertRenames("a->b"); |
| } |
| |
| @Test |
| public void testMultiRename() throws Exception { |
| final String contents = "A"; |
| final RevCommit a = commit(tree(file("a", blob(contents)))); |
| |
| // rename a to b |
| CommitBuilder commitBuilder = commitBuilder().parent(a) |
| .add("b", blob(contents)).rm("a"); |
| RevCommit renameCommit1 = commitBuilder.create(); |
| |
| // rename b to c |
| commitBuilder = commitBuilder().parent(renameCommit1) |
| .add("c", blob(contents)).rm("b"); |
| RevCommit renameCommit2 = commitBuilder.create(); |
| |
| // rename c to a |
| commitBuilder = commitBuilder().parent(renameCommit2) |
| .add("a", blob(contents)).rm("c"); |
| RevCommit renameCommit3 = commitBuilder.create(); |
| |
| follow("a"); |
| markStart(renameCommit3); |
| assertCommit(renameCommit3, rw.next()); |
| assertCommit(renameCommit2, rw.next()); |
| assertCommit(renameCommit1, rw.next()); |
| assertCommit(a, rw.next()); |
| assertNull(rw.next()); |
| |
| assertRenames("c->a", "b->c", "a->b"); |
| } |
| |
| /** |
| * Assert which renames should have happened, in traversal order. |
| * |
| * @param expectedRenames |
| * the rename specs, each one in the form "srcPath->destPath" |
| */ |
| protected void assertRenames(String... expectedRenames) { |
| Assert.assertEquals("Unexpected number of renames. Expected: " + |
| expectedRenames.length + ", actual: " + diffCollector.diffs.size(), |
| expectedRenames.length, diffCollector.diffs.size()); |
| |
| for (int i = 0; i < expectedRenames.length; i++) { |
| DiffEntry diff = diffCollector.diffs.get(i); |
| Assert.assertNotNull(diff); |
| String[] split = expectedRenames[i].split("->"); |
| |
| Assert.assertNotNull(split); |
| Assert.assertEquals(2, split.length); |
| String src = split[0]; |
| String target = split[1]; |
| |
| Assert.assertEquals(src, diff.getOldPath()); |
| Assert.assertEquals(target, diff.getNewPath()); |
| } |
| } |
| |
| protected void assertNoRenames() { |
| Assert.assertEquals("Found unexpected rename/copy diff", 0, |
| diffCollector.diffs.size()); |
| } |
| |
| } |