From bddbfe60da869ce05730045e23268ea738e3f676 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Petrus=20Nguy=E1=BB=85n=20Th=C3=A1i=20H=E1=BB=8Dc?=
 <hoc081098@gmail.com>
Date: Mon, 2 Sep 2024 19:08:51 +0700
Subject: [PATCH] add "Sink<void> failed" test

---
 test/utils/add_null_test.dart | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/test/utils/add_null_test.dart b/test/utils/add_null_test.dart
index d20b8ef..f3d5fc3 100644
--- a/test/utils/add_null_test.dart
+++ b/test/utils/add_null_test.dart
@@ -19,4 +19,9 @@ void main() {
 
     verify(c.add(null)).called(1);
   });
+
+  test('Sink<void> failed', () {
+    final StreamController<void> c = StreamController<int>();
+    expect(() => c.addNull(), throwsA(isA<TypeError>()));
+  });
 }