Allow file mode conflicts in virtual base commit on recursive merge. Similar to https://git.eclipse.org/r/c/jgit/jgit/+/175166, ignore path that have conflicts on attributes, so that the virtual base could be used by RecursiveMerger. Change-Id: I99c95445a305558d55bbb9c9e97446caaf61c154 Signed-off-by: Marija Savtchouk <mariasavtchouk@google.com>
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/merge/MergerTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/merge/MergerTest.java index eecf25b..6cbb4a8 100644 --- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/merge/MergerTest.java +++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/merge/MergerTest.java
@@ -1648,6 +1648,82 @@ public void checkFileDirMergeConflictInVirtualAncestor_ConflictInChildren_DirFil indexState(CONTENT)); } + /** + * Merging two commits when files have equal content, but conflicting file mode + * in the virtual ancestor. + * + * <p> + * This test has the same set up as + * {@code checkFileDirMergeConflictInVirtualAncestor_NoConflictInChildren}, only + * with the mode conflict in A1 and A2. + */ + @Theory + public void checkModeMergeConflictInVirtualAncestor(MergeStrategy strategy) throws Exception { + if (!strategy.equals(MergeStrategy.RECURSIVE)) { + return; + } + + Git git = Git.wrap(db); + + // master + writeTrashFile("c", "initial file"); + git.add().addFilepattern("c").call(); + RevCommit commitI = git.commit().setMessage("Initial commit").call(); + + File a = writeTrashFile("a", "content in Ancestor"); + git.add().addFilepattern("a").call(); + RevCommit commitA1 = git.commit().setMessage("Ancestor 1").call(); + + a = writeTrashFile("a", "content in Child 1 (commited on master)"); + git.add().addFilepattern("a").call(); + // commit C1M + git.commit().setMessage("Child 1 on master").call(); + + git.checkout().setCreateBranch(true).setStartPoint(commitI).setName("branch-to-merge").call(); + // "a" becomes executable in A2 + a = writeTrashFile("a", "content in Ancestor"); + a.setExecutable(true); + git.add().addFilepattern("a").call(); + RevCommit commitA2 = git.commit().setMessage("Ancestor 2").call(); + + // second branch + git.checkout().setCreateBranch(true).setStartPoint(commitA1).setName("second-branch").call(); + a = writeTrashFile("a", "content in Child 2 (commited on second-branch)"); + git.add().addFilepattern("a").call(); + // commit C2S + git.commit().setMessage("Child 2 on second-branch").call(); + + // Merge branch-to-merge into second-branch + MergeResult mergeResult = git.merge().include(commitA2).setStrategy(strategy).call(); + assertEquals(mergeResult.getNewHead(), null); + assertEquals(mergeResult.getMergeStatus(), MergeStatus.CONFLICTING); + // Resolve the conflict manually, merge "a" as non-executable + a = writeTrashFile("a", "merge conflict resolution"); + a.setExecutable(false); + git.add().addFilepattern("a").call(); + RevCommit commitC3S = git.commit().setMessage("Child 3 on second bug - resolve merge conflict").call(); + + // Merge branch-to-merge into master + git.checkout().setName("master").call(); + mergeResult = git.merge().include(commitA2).setStrategy(strategy).call(); + assertEquals(mergeResult.getNewHead(), null); + assertEquals(mergeResult.getMergeStatus(), MergeStatus.CONFLICTING); + + // Resolve the conflict manually - merge "a" as non-executable + a = writeTrashFile("a", "merge conflict resolution"); + a.setExecutable(false); + git.add().addFilepattern("a").call(); + // commit C4M + git.commit().setMessage("Child 4 on master - resolve merge conflict").call(); + + // Merge C4M (second-branch) into master (C3S) + // Conflict in virtual base should be here, but there are no conflicts in + // children + mergeResult = git.merge().include(commitC3S).call(); + assertEquals(mergeResult.getMergeStatus(), MergeStatus.MERGED); + + } + private void writeSubmodule(String path, ObjectId commit) throws IOException, ConfigInvalidException { addSubmoduleToIndex(path, commit);
diff --git a/org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java b/org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java index 4bfb38d..b011258 100644 --- a/org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java +++ b/org.eclipse.jgit/src/org/eclipse/jgit/merge/ResolveMerger.java
@@ -644,15 +644,18 @@ protected boolean processEntry(CanonicalTreeParser base, } return true; } - // FileModes are not mergeable. We found a conflict on modes. - // For conflicting entries we don't know lastModified and - // length. - add(tw.getRawPath(), base, DirCacheEntry.STAGE_1, EPOCH, 0); - add(tw.getRawPath(), ours, DirCacheEntry.STAGE_2, EPOCH, 0); - add(tw.getRawPath(), theirs, DirCacheEntry.STAGE_3, EPOCH, 0); - unmergedPaths.add(tw.getPathString()); - mergeResults.put(tw.getPathString(), - new MergeResult<>(Collections.<RawText> emptyList())); + if (!ignoreConflicts) { + // FileModes are not mergeable. We found a conflict on modes. + // For conflicting entries we don't know lastModified and + // length. + // This path can be skipped on ignoreConflicts, so the caller + // could use virtual commit. + add(tw.getRawPath(), base, DirCacheEntry.STAGE_1, EPOCH, 0); + add(tw.getRawPath(), ours, DirCacheEntry.STAGE_2, EPOCH, 0); + add(tw.getRawPath(), theirs, DirCacheEntry.STAGE_3, EPOCH, 0); + unmergedPaths.add(tw.getPathString()); + mergeResults.put(tw.getPathString(), new MergeResult<>(Collections.<RawText>emptyList())); + } return true; }