diff options
| -rw-r--r-- | org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java | 16 | ||||
| -rw-r--r-- | org.eclipse.jgit.test/tst/org/eclipse/jgit/merge/GitlinkMergeTest.java | 291 |
2 files changed, 307 insertions, 0 deletions
diff --git a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java index de11e2c004..cc84f197aa 100644 --- a/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java +++ b/org.eclipse.jgit.junit/src/org/eclipse/jgit/junit/RepositoryTestCase.java @@ -34,6 +34,7 @@ import org.eclipse.jgit.dircache.DirCacheBuilder; import org.eclipse.jgit.dircache.DirCacheCheckout; import org.eclipse.jgit.dircache.DirCacheEntry; import org.eclipse.jgit.internal.storage.file.FileRepository; +import org.eclipse.jgit.lib.AnyObjectId; import org.eclipse.jgit.lib.Constants; import org.eclipse.jgit.lib.FileMode; import org.eclipse.jgit.lib.ObjectId; @@ -513,6 +514,21 @@ public abstract class RepositoryTestCase extends LocalDiskRepositoryTestCase { } /** + * Create <code>DirCacheEntry</code> + * + * @param path + * @param objectId + * @return the DirCacheEntry + */ + protected DirCacheEntry createGitLink(String path, AnyObjectId objectId) { + final DirCacheEntry entry = new DirCacheEntry(path, + DirCacheEntry.STAGE_0); + entry.setFileMode(FileMode.GITLINK); + entry.setObjectId(objectId); + return entry; + } + + /** * Assert files are equal * * @param expected diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/merge/GitlinkMergeTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/merge/GitlinkMergeTest.java new file mode 100644 index 0000000000..4165812e28 --- /dev/null +++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/merge/GitlinkMergeTest.java @@ -0,0 +1,291 @@ +/* + * Copyright (c) 2020, Google LLC 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 + * http://www.eclipse.org/org/documents/edl-v10.php. + * + * SPDX-License-Identifier: BSD-3-Clause + */ + +package org.eclipse.jgit.merge; + +import static org.junit.Assert.assertEquals; +import static org.junit.Assert.assertFalse; +import static org.junit.Assert.assertTrue; + +import java.io.IOException; + +import org.eclipse.jgit.annotations.Nullable; +import org.eclipse.jgit.dircache.DirCache; +import org.eclipse.jgit.dircache.DirCacheBuilder; +import org.eclipse.jgit.dircache.DirCacheEntry; +import org.eclipse.jgit.lib.CommitBuilder; +import org.eclipse.jgit.lib.FileMode; +import org.eclipse.jgit.lib.ObjectId; +import org.eclipse.jgit.lib.ObjectInserter; +import org.eclipse.jgit.lib.PersonIdent; +import org.eclipse.jgit.test.resources.SampleDataRepositoryTestCase; +import org.eclipse.jgit.treewalk.TreeWalk; +import org.junit.Ignore; +import org.junit.Test; + +public class GitlinkMergeTest extends SampleDataRepositoryTestCase { + private static final String LINK_ID1 = "DEADBEEFDEADBEEFBABEDEADBEEFDEADBEEFBABE"; + private static final String LINK_ID2 = "DEADDEADDEADDEADDEADDEADDEADDEADDEADDEAD"; + private static final String LINK_ID3 = "BEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEFBEEF"; + + private static final String SUBMODULE_PATH = "submodule.link"; + + @Test + public void testGitLinkMerging_UpdateUpdate() throws Exception { + testGitLink(LINK_ID1, LINK_ID2, LINK_ID3, newResolveMerger(), false); + } + + @Test + public void testGitLinkMerging_bothAddedSameLink() throws Exception { + assertGitLinkValue( + testGitLink(null, LINK_ID2, LINK_ID2, newResolveMerger(), true), + LINK_ID2); + } + + @Test + public void testGitLinkMerging_bothAddedDifferentLink() throws Exception { + testGitLink(null, LINK_ID2, LINK_ID3, newResolveMerger(), false); + } + + @Test + public void testGitLinkMerging_AddNew_ignoreConflicts() throws Exception { + assertGitLinkValue( + testGitLink(null, null, LINK_ID3, newIgnoreConflictMerger(), + true), + LINK_ID3); + } + + @Test + @Ignore("broken - doesn't ignore conflicts") + public void testGitLinkMerging_UpdateUpdate_ignoreConflicts() + throws Exception { + assertGitLinkValue(testGitLink(LINK_ID1, LINK_ID2, LINK_ID3, + newIgnoreConflictMerger(), true), LINK_ID2); + } + + @Test + @Ignore("broken - doesn't ignore conflicts") + public void testGitLinkMerging_bothAddedSameLink_ignoreConflicts() + throws Exception { + assertGitLinkValue(testGitLink(null, LINK_ID2, LINK_ID2, + newIgnoreConflictMerger(), true), LINK_ID2); + } + + @Test + @Ignore("broken - doesn't ignore conflicts") + public void testGitLinkMerging_bothAddedDifferentLink_ignoreConflicts() + throws Exception { + assertGitLinkValue(testGitLink(null, LINK_ID2, LINK_ID3, + newIgnoreConflictMerger(), true), LINK_ID2); + } + + protected Merger testGitLink(@Nullable String baseLink, + @Nullable String oursLink, @Nullable String theirsLink, + Merger merger, boolean shouldMerge) + throws Exception { + DirCache treeB = db.readDirCache(); + DirCache treeO = db.readDirCache(); + DirCache treeT = db.readDirCache(); + + DirCacheBuilder bTreeBuilder = treeB.builder(); + DirCacheBuilder oTreeBuilder = treeO.builder(); + DirCacheBuilder tTreeBuilder = treeT.builder(); + + maybeAddLink(bTreeBuilder, baseLink); + maybeAddLink(oTreeBuilder, oursLink); + maybeAddLink(tTreeBuilder, theirsLink); + + bTreeBuilder.finish(); + oTreeBuilder.finish(); + tTreeBuilder.finish(); + + ObjectInserter ow = db.newObjectInserter(); + ObjectId b = commit(ow, treeB, new ObjectId[] {}); + ObjectId o = commit(ow, treeO, new ObjectId[] { b }); + ObjectId t = commit(ow, treeT, new ObjectId[] { b }); + + boolean merge = merger.merge(new ObjectId[] { o, t }); + assertEquals(shouldMerge, merge); + + return merger; + } + + private Merger newResolveMerger() { + return MergeStrategy.RESOLVE.newMerger(db, true); + } + + private Merger newIgnoreConflictMerger() { + return new ResolveMerger(db, true) { + @Override + protected boolean mergeImpl() throws IOException { + // emulate call with ignore conflicts. + return mergeTrees(mergeBase(), sourceTrees[0], sourceTrees[1], + true); + } + }; + } + + @Test + public void testGitLinkMerging_blobWithLink() throws Exception { + DirCache treeB = db.readDirCache(); + DirCache treeO = db.readDirCache(); + DirCache treeT = db.readDirCache(); + + DirCacheBuilder bTreeBuilder = treeB.builder(); + DirCacheBuilder oTreeBuilder = treeO.builder(); + DirCacheBuilder tTreeBuilder = treeT.builder(); + + bTreeBuilder.add( + createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob")); + oTreeBuilder.add( + createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 2")); + + maybeAddLink(tTreeBuilder, LINK_ID3); + + bTreeBuilder.finish(); + oTreeBuilder.finish(); + tTreeBuilder.finish(); + + ObjectInserter ow = db.newObjectInserter(); + ObjectId b = commit(ow, treeB, new ObjectId[] {}); + ObjectId o = commit(ow, treeO, new ObjectId[] { b }); + ObjectId t = commit(ow, treeT, new ObjectId[] { b }); + + Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db); + boolean merge = resolveMerger.merge(new ObjectId[] { o, t }); + assertFalse(merge); + } + + @Test + public void testGitLinkMerging_linkWithBlob() throws Exception { + DirCache treeB = db.readDirCache(); + DirCache treeO = db.readDirCache(); + DirCache treeT = db.readDirCache(); + + DirCacheBuilder bTreeBuilder = treeB.builder(); + DirCacheBuilder oTreeBuilder = treeO.builder(); + DirCacheBuilder tTreeBuilder = treeT.builder(); + + maybeAddLink(bTreeBuilder, LINK_ID1); + maybeAddLink(oTreeBuilder, LINK_ID2); + tTreeBuilder.add( + createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 3")); + + bTreeBuilder.finish(); + oTreeBuilder.finish(); + tTreeBuilder.finish(); + + ObjectInserter ow = db.newObjectInserter(); + ObjectId b = commit(ow, treeB, new ObjectId[] {}); + ObjectId o = commit(ow, treeO, new ObjectId[] { b }); + ObjectId t = commit(ow, treeT, new ObjectId[] { b }); + + Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db); + boolean merge = resolveMerger.merge(new ObjectId[] { o, t }); + assertFalse(merge); + } + + @Test + public void testGitLinkMerging_linkWithLink() throws Exception { + DirCache treeB = db.readDirCache(); + DirCache treeO = db.readDirCache(); + DirCache treeT = db.readDirCache(); + + DirCacheBuilder bTreeBuilder = treeB.builder(); + DirCacheBuilder oTreeBuilder = treeO.builder(); + DirCacheBuilder tTreeBuilder = treeT.builder(); + + bTreeBuilder.add( + createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob")); + maybeAddLink(oTreeBuilder, LINK_ID2); + maybeAddLink(tTreeBuilder, LINK_ID3); + + bTreeBuilder.finish(); + oTreeBuilder.finish(); + tTreeBuilder.finish(); + + ObjectInserter ow = db.newObjectInserter(); + ObjectId b = commit(ow, treeB, new ObjectId[] {}); + ObjectId o = commit(ow, treeO, new ObjectId[] { b }); + ObjectId t = commit(ow, treeT, new ObjectId[] { b }); + + Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db); + boolean merge = resolveMerger.merge(new ObjectId[] { o, t }); + assertFalse(merge); + } + + @Test + @Ignore("broken - try to do content-merge with GITLINK") + public void testGitLinkMerging_blobWithBlobFromLink() throws Exception { + DirCache treeB = db.readDirCache(); + DirCache treeO = db.readDirCache(); + DirCache treeT = db.readDirCache(); + + DirCacheBuilder bTreeBuilder = treeB.builder(); + DirCacheBuilder oTreeBuilder = treeO.builder(); + DirCacheBuilder tTreeBuilder = treeT.builder(); + + maybeAddLink(bTreeBuilder, LINK_ID1); + oTreeBuilder.add( + createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 2")); + tTreeBuilder.add( + createEntry(SUBMODULE_PATH, FileMode.REGULAR_FILE, "blob 3")); + + bTreeBuilder.finish(); + oTreeBuilder.finish(); + tTreeBuilder.finish(); + + ObjectInserter ow = db.newObjectInserter(); + ObjectId b = commit(ow, treeB, new ObjectId[] {}); + ObjectId o = commit(ow, treeO, new ObjectId[] { b }); + ObjectId t = commit(ow, treeT, new ObjectId[] { b }); + + Merger resolveMerger = MergeStrategy.RESOLVE.newMerger(db); + boolean merge = resolveMerger.merge(new ObjectId[] { o, t }); + assertFalse(merge); + } + + private void maybeAddLink(DirCacheBuilder builder, + @Nullable String linkId) { + if (linkId == null) { + return; + } + DirCacheEntry newLink = createGitLink(SUBMODULE_PATH, + ObjectId.fromString(linkId)); + builder.add(newLink); + } + + private void assertGitLinkValue(Merger resolveMerger, String expectedValue) + throws Exception { + try (TreeWalk tw = new TreeWalk(db)) { + tw.setRecursive(true); + tw.reset(resolveMerger.getResultTreeId()); + + assertTrue(tw.next()); + assertEquals(SUBMODULE_PATH, tw.getPathString()); + assertEquals(ObjectId.fromString(expectedValue), tw.getObjectId(0)); + + assertFalse(tw.next()); + } + } + + private static ObjectId commit(ObjectInserter odi, DirCache treeB, + ObjectId[] parentIds) throws Exception { + CommitBuilder c = new CommitBuilder(); + c.setTreeId(treeB.writeTree(odi)); + c.setAuthor(new PersonIdent("A U Thor", "a.u.thor", 1L, 0)); + c.setCommitter(c.getAuthor()); + c.setParentIds(parentIds); + c.setMessage("Tree " + c.getTreeId().name()); + ObjectId id = odi.insert(c); + odi.flush(); + return id; + } +} |