blob: 1cb4ef295eb54271ad1ee5663b4c83030e2534e1 [file] [log] [blame]
* 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 Future<S0> and S0
* are subtypes of a type T1, then a type T0 is a subtype of a type T1. Case
* when an instance of T0 is an instance of S0 type.
* @author
* @description Check that if type T0 is a subtype of a type T1, then instance
* of T0 can be be used as a return value of type T1
* @author
* This test is generated from left_FutureOr_A01.dart and
* return_value_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';
// SharedOptions=--enable-experiment=non-nullable
import "dart:async";
class C {
const C();
class S0 extends C {}
FutureOr<S0> t0Instance = new S0();
FutureOr<C> t1Instance = new Future<C>.value(new C());
const t1Default = const C();
FutureOr<C> returnValueFunc() => forgetType(t0Instance);
class ReturnValueTest {
static FutureOr<C> staticTestMethod() => forgetType(t0Instance);
FutureOr<C> testMethod() => forgetType(t0Instance);
FutureOr<C> get testGetter => forgetType(t0Instance);
class ReturnValueGen<X> {
X testMethod() => forgetType(t0Instance);
X get testGetter => forgetType(t0Instance);
main() {
FutureOr<C> returnValueLocalFunc() => forgetType(t0Instance);
new ReturnValueTest().testMethod();
new ReturnValueTest().testGetter;
// Test type parameters
//# <-- NotGenericFunctionType
new ReturnValueGen<FutureOr<C>>().testMethod();
new ReturnValueGen<FutureOr<C>>().testGetter;
//# -->