Update HEAD in cherry-picking several commits

Without update, index is wrongly detected to be dirty
when picking the second commit.

Change-Id: Idf47ecb33e8bd38340d760806d629f67be92d2d5
Signed-off-by: Hiroshi Tomita <tomykaira@gmail.com>
Bug: 411963

1 files changed, 36 insertions, 0 deletions

diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CherryPickCommandTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CherryPickCommandTest.java
index f66661a52f..2668c116a0 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CherryPickCommandTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/api/CherryPickCommandTest.java
@@ -111,6 +111,42 @@ public class CherryPickCommandTest extends RepositoryTestCase {
 		assertFalse(history.hasNext());
 	}
 
+    @Test
+    public void testSequentialCherryPick() throws IOException, JGitInternalException,
+            GitAPIException {
+        Git git = new Git(db);
+
+        writeTrashFile("a", "first line\nsec. line\nthird line\n");
+        git.add().addFilepattern("a").call();
+        RevCommit firstCommit = git.commit().setMessage("create a").call();
+
+        writeTrashFile("a", "first line\nsec. line\nthird line\nfourth line\n");
+        git.add().addFilepattern("a").call();
+        RevCommit enlargingA = git.commit().setMessage("enlarged a").call();
+
+        writeTrashFile("a",
+                "first line\nsecond line\nthird line\nfourth line\n");
+        git.add().addFilepattern("a").call();
+        RevCommit fixingA = git.commit().setMessage("fixed a").call();
+
+        git.branchCreate().setName("side").setStartPoint(firstCommit).call();
+        checkoutBranch("refs/heads/side");
+
+        writeTrashFile("b", "nothing to do with a");
+        git.add().addFilepattern("b").call();
+        git.commit().setMessage("create b").call();
+
+        CherryPickResult result = git.cherryPick().include(enlargingA).include(fixingA).call();
+        assertEquals(CherryPickResult.CherryPickStatus.OK, result.getStatus());
+
+        Iterator<RevCommit> history = git.log().call().iterator();
+        assertEquals("fixed a", history.next().getFullMessage());
+        assertEquals("enlarged a", history.next().getFullMessage());
+        assertEquals("create b", history.next().getFullMessage());
+        assertEquals("create a", history.next().getFullMessage());
+        assertFalse(history.hasNext());
+    }
+
 	@Test
 	public void testCherryPickDirtyIndex() throws Exception {
 		Git git = new Git(db);