2 files changed, 20 insertions, 0 deletions
diff --git a/tests/date/date.c b/tests/date/date.c
index 88881d1e1..ae787c0d3 100644
--- a/tests/date/date.c
+++ b/tests/date/date.c
@@ -13,3 +13,10 @@ void test_date_date__overflow(void)
    cl_assert(d2038 < d2039);
 #endif
 }
+
+void test_date_date__invalid_date(void)
+{
+   git_time_t d;
+   cl_git_fail(git__date_parse(&d, ""));
+   cl_git_fail(git__date_parse(&d, "NEITHER_INTEGER_NOR_DATETIME"));
+}
diff --git a/tests/refs/revparse.c b/tests/refs/revparse.c
index d6ec802e8..8d3a7e057 100644
--- a/tests/refs/revparse.c
+++ b/tests/refs/revparse.c
@@ -460,6 +460,19 @@ void test_refs_revparse__date(void)
 	test_object("with-empty-log@{2 days ago}", NULL);
 }
 
+void test_refs_revparse__invalid_date(void)
+{
+	/*
+	 * $ git rev-parse HEAD@{} --
+	 * fatal: bad revision 'HEAD@{}'
+	 *
+	 * $ git rev-parse HEAD@{NEITHER_INTEGER_NOR_DATETIME} --
+	 * fatal: bad revision 'HEAD@{NEITHER_INTEGER_NOR_DATETIME}'
+	 */
+	test_object("HEAD@{}", NULL);
+	test_object("HEAD@{NEITHER_INTEGER_NOR_DATETIME}", NULL);
+}
+
 void test_refs_revparse__colon(void)
 {
 	assert_invalid_single_spec(":/");