| // 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. |
| |
| // @dart = 2.9 |
| |
| /// @assertion Future<T> reduce(T combine(T previous, T element)) |
| /// Reduces a sequence of values by repeatedly applying combine. |
| /// @description Checks that if the stream contains single element, the combine |
| /// method is not called and that element is the result of the future. |
| /// @note undocumented |
| /// @author kaigorodov |
| |
| library reduce_A01_t02; |
| import "../../../Utils/expect.dart"; |
| |
| void test(CreateStreamFunction create) { |
| int combine(int p, int e){ |
| Expect.fail("combine should not be called"); |
| return 0; // makes analyzer happy |
| } |
| |
| AsyncExpect.value( |
| 777, |
| create([777]).reduce(combine) |
| ); |
| } |