--- /dev/null
+/*
+ * Copyright (C) 2011, GEBIT Solutions
+ * 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.assertNull;
+
+import java.util.ArrayList;
+import java.util.List;
+
+import org.eclipse.jgit.diff.DiffEntry;
+import org.eclipse.jgit.junit.TestRepository.CommitBuilder;
+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<DiffEntry>();
+
+ @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(final String followPath) {
+ FollowFilter followFilter = FollowFilter.create(followPath);
+ 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());
+ }
+
+}
--- /dev/null
+/*
+ * Copyright (C) 2011, GEBIT Solutions
+ * 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 org.eclipse.jgit.diff.DiffEntry;
+
+/**
+ * An instance of this class can be used in conjunction with a
+ * {@link FollowFilter}. Whenever a rename has been detected during a revision
+ * walk, it will be reported here.
+ * @see FollowFilter#setRenameCallback(RenameCallback)
+ */
+public abstract class RenameCallback {
+ /**
+ * Called whenever a diff was found that is actually a rename or copy of a
+ * file.
+ *
+ * @param entry
+ * the entry representing the rename/copy
+ */
+ public abstract void renamed(DiffEntry entry);
+}
projects / jgit.git / commitdiff