From a3e697c525852f90adfab2e9666ad3795407ff18 Mon Sep 17 00:00:00 2001
From: "N. Bighetti" <60653216+tenkirin@users.noreply.github.com>
Date: Wed, 29 Jun 2022 20:33:03 +0900
Subject: [PATCH] enhance: add test cases to 9155-hard-validdate (#12404)

---
 questions/09155-hard-validdate/test-cases.ts | 5 ++++-
 1 file changed, 4 insertions(+), 1 deletion(-)

diff --git a/questions/09155-hard-validdate/test-cases.ts b/questions/09155-hard-validdate/test-cases.ts
index a02fbb60..8e8db9c0 100644
--- a/questions/09155-hard-validdate/test-cases.ts
+++ b/questions/09155-hard-validdate/test-cases.ts
@@ -8,4 +8,7 @@ type cases = [
   Expect<Equal<ValidDate<'0100'>, false>>,
   Expect<Equal<ValidDate<'0132'>, false>>,
   Expect<Equal<ValidDate<'1301'>, false>>,
-]
+  Expect<Equal<ValidDate<'0123'>, true>>,
+  Expect<Equal<ValidDate<'01234'>, false>>,
+  Expect<Equal<ValidDate<''>, false>>,
+]