| // Copyright (c) 2018, the Dart project authors. Please see the AUTHORS file |
| // for details. All rights reserved. Use of this source code is governed by a |
| // BSD-style license that can be found in the LICENSE file. |
| |
| // @dart = 2.9 |
| |
| // Test that TypeErrors happen for async methods without using returned Future. |
| |
| import 'dart:async'; |
| import 'package:expect/expect.dart'; |
| |
| Future<int> iota(int n) async { |
| await null; |
| return n; |
| } |
| |
| class C { |
| Future<int> add(int n) async { |
| await null; |
| return n; |
| } |
| } |
| |
| main() async { |
| dynamic f = iota; |
| Expect.throwsTypeError(() => f('ten')); |
| Expect.throwsTypeError(() => f(4.7)); |
| |
| dynamic o = new C(); |
| Expect.throwsTypeError(() => o.add('ten')); |
| Expect.throwsTypeError(() => o.add(4.7)); |
| } |