| /* |
| * 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. |
| */ |
| /** |
| * @assertion We say that a type T0 is a subtype of a type T1 (written T0 <: T1) |
| * when: |
| * Left FutureOr: T0 is FutureOr<S0> |
| * and Future<S0> <: T1 |
| * and S0 <: T1 |
| * @description Check that if a type T0 is FutureOr<S0> and S0 is a subtype of |
| * T1 but Future<S0> is not a subtype of T1, then a type T0 is not a subtype of |
| * a type T1. Case when an instance of T0 is an instance of Future<S0> type. |
| * @author ngl@unipro.ru |
| */ |
| /** |
| * @description Check that if type T0 not a subtype of a type T1, then instance |
| * of T0 cannot be be used as a return value of type T1 |
| * @author sgrekhov@unipro.ru |
| */ |
| /* |
| * This test is generated from left_FutureOr_fail_A03.dart and |
| * return_value_fail_x01.dart. |
| * Don't modify it. If you want to change this file, change one of the files |
| * above and then run generator.dart to regenerate the tests. |
| */ |
| |
| |
| import '../../utils/common.dart'; |
| import '../../../../Utils/expect.dart'; |
| // SharedOptions=--enable-experiment=non-nullable |
| import "dart:async"; |
| |
| class C1 { |
| const C1(); |
| } |
| class S0 implements Future<C1> { |
| asStream() => null; |
| catchError(Function onError, {bool test(Object error)}) => null; |
| then<S0>(FutureOr<S0> onValue(C1 value), {Function onError}) => null; |
| timeout(Duration timeLimit, {FutureOr<C1> onTimeout()}) => null; |
| whenComplete(FutureOr action()) => null; |
| } |
| |
| // Future<S0> is not a subtype of T1 (Future<C1>) |
| FutureOr<S0> t0Instance = new Future<S0>.value(new S0()); |
| Future<C1> t1Instance = new Future.value(new C1()); |
| |
| const t1Default = const C1(); |
| |
| |
| |
| |
| Future<C1> returnValueFunc() => forgetType(t0Instance); |
| |
| class ReturnValueTest { |
| static Future<C1> staticTestMethod() => forgetType(t0Instance); |
| |
| Future<C1> testMethod() => forgetType(t0Instance); |
| |
| Future<C1> get testGetter => forgetType(t0Instance); |
| } |
| |
| class ReturnValueGen<X> { |
| X testMethod() => forgetType(t0Instance); |
| X get testGetter => forgetType(t0Instance); |
| } |
| |
| main() { |
| Future<C1> returnValueLocalFunc() => forgetType(t0Instance); |
| |
| Expect.throws(() {returnValueFunc();}, (e) => e is TypeError); |
| Expect.throws(() {returnValueLocalFunc();}, (e) => e is TypeError); |
| Expect.throws(() {ReturnValueTest.staticTestMethod();}, (e) => e is TypeError); |
| |
| Expect.throws(() {new ReturnValueTest().testMethod();}, (e) => e is TypeError); |
| Expect.throws(() {new ReturnValueTest().testGetter;}, (e) => e is TypeError); |
| |
| // Test type parameters |
| |
| //# <-- NotGenericFunctionType |
| Expect.throws(() {new ReturnValueGen<Future<C1>>().testMethod();}, (e) => e is TypeError); |
| Expect.throws(() {new ReturnValueGen<Future<C1>>().testGetter;}, (e) => e is TypeError); |
| //# --> |
| } |