1 files changed, 17 insertions, 0 deletions
diff --git a/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/ObjectIdTest.java b/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/ObjectIdTest.java
index abf57d6cd3..2198b87aa5 100644
--- a/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/ObjectIdTest.java
+++ b/org.eclipse.jgit.test/tst/org/eclipse/jgit/lib/ObjectIdTest.java
@@ -49,6 +49,8 @@ import static org.junit.Assert.assertEquals;
 import static org.junit.Assert.assertFalse;
 import static org.junit.Assert.assertTrue;
 
+import org.eclipse.jgit.errors.InvalidObjectIdException;
+
 import org.junit.Test;
 
 public class ObjectIdTest {
@@ -124,6 +126,21 @@ public class ObjectIdTest {
 		assertEquals(x.toLowerCase(), oid.name());
 	}
 
+	@Test(expected = InvalidObjectIdException.class)
+	public void testFromString_short() {
+		ObjectId.fromString("cafe1234");
+	}
+
+	@Test(expected = InvalidObjectIdException.class)
+	public void testFromString_nonHex() {
+		ObjectId.fromString("0123456789abcdefghij0123456789abcdefghij");
+	}
+
+	@Test(expected = InvalidObjectIdException.class)
+	public void testFromString_shortNonHex() {
+		ObjectId.fromString("6789ghij");
+	}
+
 	@Test
 	public void testGetByte() {
 		byte[] raw = new byte[20];