| // Copyright (c) 2011, 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. |
| |
| /// @assertion Future<T> single |
| /// Returns the single element. |
| /// If this is empty or has more than one element throws a StateError. |
| /// @description Checks that a error is thrown if this is empty or has more |
| /// than one element. |
| /// @author kaigorodov |
| |
| library single_A02_t01; |
| import "../../../Utils/expect.dart"; |
| |
| void test(CreateStreamFunction create) { |
| AsyncExpect.error((e) => e is StateError, create([]).single); |
| AsyncExpect.error((e) => e is StateError, create([1, 2]).single); |
| AsyncExpect.error((e) => e is StateError, create(["a", "b", "c"]).single); |
| } |