diff --git a/odb_test.go b/odb_test.go
index 3c7624c..a4f8943 100644
--- a/odb_test.go
+++ b/odb_test.go
@@ -32,4 +32,31 @@ func TestOdbStream(t *testing.T) {
 	if stream.Id.Cmp(expectedId) != 0 {
 		t.Fatal("Wrong data written")
 	}
+}
+
+func TestOdbHash(t *testing.T) {
+
+    repo := createTestRepo(t)
+	defer os.RemoveAll(repo.Workdir())
+	_, _ = seedTestRepo(t, repo)
+
+	odb, error := repo.Odb()
+	checkFatal(t, error)
+
+	str := `tree 115fcae49287c82eb55bb275cbbd4556fbed72b7
+parent 66e1c476199ebcd3e304659992233132c5a52c6c
+author John Doe <john@doe.com> 1390682018 +0000
+committer John Doe <john@doe.com> 1390682018 +0000
+
+Initial commit.`;
+
+	oid, error := odb.Hash([]byte(str), ObjectCommit)
+	checkFatal(t, error)
+
+	coid, error := odb.Write([]byte(str), ObjectCommit)
+	checkFatal(t, error)
+
+	if oid.Cmp(coid) != 0 {
+		t.Fatal("Hash and write Oids are different")
+	}
 }
\ No newline at end of file