| // Copyright (c) 2014, 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 |
| |
| // VMOptions=--optimization-counter-threshold=10 --no-background-compilation |
| |
| import 'package:expect/expect.dart'; |
| |
| import 'dart:async'; |
| |
| expectThenValue(future, value) { |
| Expect.isTrue(future is Future); |
| future.then((result) { |
| Expect.equals(value, result); |
| }); |
| } |
| |
| asyncIf(condition) async { |
| if (condition) { |
| return 1; |
| } else { |
| return 2; |
| } |
| // This return is never reached as the finally block returns from the |
| // function. |
| return 3; |
| } |
| |
| asyncFor(condition) async { |
| for (int i = 0; i < 10; i++) { |
| if (i == 5 && condition) { |
| return 1; |
| } |
| } |
| return 2; |
| } |
| |
| asyncTryCatchFinally(overrideInFinally, doThrow) async { |
| try { |
| if (doThrow) throw 444; |
| return 1; |
| } catch (e) { |
| return e; |
| } finally { |
| if (overrideInFinally) return 3; |
| } |
| } |
| |
| asyncTryCatchLoop() async { |
| var i = 0; |
| var throws = 13; |
| while (true) { |
| try { |
| throw throws; |
| } catch (e) { |
| if (i == throws) { |
| return e; |
| } |
| } finally { |
| i++; |
| } |
| } |
| } |
| |
| asyncImplicitReturn() async { |
| try {} catch (e) {} finally {} |
| } |
| |
| main() { |
| var asyncReturn; |
| |
| for (int i = 0; i < 10; i++) { |
| asyncReturn = asyncIf(true); |
| expectThenValue(asyncReturn, 1); |
| asyncReturn = asyncIf(false); |
| expectThenValue(asyncReturn, 2); |
| |
| asyncReturn = asyncFor(true); |
| expectThenValue(asyncReturn, 1); |
| asyncReturn = asyncFor(false); |
| expectThenValue(asyncReturn, 2); |
| |
| asyncReturn = asyncTryCatchFinally(true, false); |
| expectThenValue(asyncReturn, 3); |
| asyncReturn = asyncTryCatchFinally(false, false); |
| expectThenValue(asyncReturn, 1); |
| asyncReturn = asyncTryCatchFinally(true, true); |
| expectThenValue(asyncReturn, 3); |
| asyncReturn = asyncTryCatchFinally(false, true); |
| expectThenValue(asyncReturn, 444); |
| asyncReturn = asyncTryCatchLoop(); |
| expectThenValue(asyncReturn, 13); |
| |
| asyncReturn = asyncImplicitReturn(); |
| expectThenValue(asyncReturn, null); |
| } |
| } |