diff --git a/src/test/test-varlink-idl.c b/src/test/test-varlink-idl.c
index a93d717f3f..028408b16e 100644
--- a/src/test/test-varlink-idl.c
+++ b/src/test/test-varlink-idl.c
@@ -152,6 +152,12 @@ TEST(parse) {
 
         assert_se(varlink_idl_parse(text, NULL, NULL, &parsed) >= 0);
         test_parse_format_one(parsed);
+
+        assert_se(varlink_idl_parse("interface org.freedesktop.Foo\n"
+                                    "type Foo (b: bool, c: foo, c: int)", NULL, NULL, NULL) == -ENETUNREACH); /* unresolved type */
+        assert_se(varlink_idl_parse("interface org.freedesktop.Foo\n"
+                                    "type Foo ()", NULL, NULL, NULL) == -EBADMSG); /* empty struct/enum */
+
 }
 
 TEST(interface_name_is_valid) {