2 files changed, 19 insertions, 10 deletions

diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/FileReftableTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/FileReftableTest.java
index 33bacbe3e2..8bab8e35ac 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/FileReftableTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/file/FileReftableTest.java
@@ -25,7 +25,9 @@ import static org.junit.Assert.assertTrue;
 import static org.junit.Assert.fail;
 
 import java.io.File;
+import java.io.FileOutputStream;
 import java.io.IOException;
+import java.io.OutputStream;
 import java.security.SecureRandom;
 import java.util.ArrayList;
 import java.util.List;
@@ -129,20 +131,21 @@ public class FileReftableTest extends SampleDataRepositoryTestCase {
 		assertTrue(db.getRefDatabase().hasFastTipsWithSha1());
 	}
 
+
 	@Test
-	public void testConvertToRefdir() throws Exception {
+	public void testConvertBrokenObjectId() throws Exception {
 		db.convertToPackedRefs(false, false);
-		assertTrue(db.getRefDatabase() instanceof RefDirectory);
-		Ref h = db.exactRef("HEAD");
-		assertTrue(h.isSymbolic());
-		assertEquals("refs/heads/master", h.getTarget().getName());
+		new File(db.getDirectory(), "refs/heads").mkdirs();
 
-		Ref b = db.exactRef("refs/heads/b");
-		assertFalse(b.isSymbolic());
-		assertTrue(b.isPeeled());
-		assertEquals(bCommit, b.getObjectId().name());
+		String invalidId = "deadbeefdeadbeefdeadbeefdeadbeefdeadbeef";
+		File headFile = new File(db.getDirectory(), "refs/heads/broken");
+		try (OutputStream os = new FileOutputStream(headFile)) {
+			os.write(Constants.encodeASCII(invalidId + "\n"));
+		}
 
-		assertFalse(db.getRefDatabase().hasFastTipsWithSha1());
+		Ref r = db.exactRef("refs/heads/broken");
+		assertNotNull(r);
+		db.convertToReftable(true, false);
 	}
 
 	@Test
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/reftable/ReftableTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/reftable/ReftableTest.java
index 009914b35c..46df0011f3 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/reftable/ReftableTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/internal/storage/reftable/ReftableTest.java
@@ -803,6 +803,12 @@ public class ReftableTest {
 			}
 			assertFalse(lc.next());
 		}
+
+		for (Ref exp : refs) {
+ 			try (LogCursor lc = t.seekLog(exp.getName())) {
+				assertTrue("has " + exp.getName(), lc.next());
+			}
+		}
 	}
 
 	@Test