blob: 063e0de3527679404b3d4fa86f5d355d7f6d4175 [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:
* Right FutureOr: T1 is FutureOr<S1> and
* either T0 <: Future<S1>
* or T0 <: S1
* or T0 is X0 and X0 has bound S0 and S0 <: T1
* or T0 is X0 & S0 and S0 <: T1
* @description Check that if a type T1 is Future<S1> and a type T0 is X0 and
* X0 has bound S0 and S0 is not a subtype of Future<S1> or S1, then a type T0
* is not a subtype of a type T1.
* @author
* @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
* This test is generated from right_FutureOr_fail_A02.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';
import "dart:async";
class S1 {}
class S0 {}
class X0 extends S0 {
X0 t0Instance = new X0();
FutureOr<S1> t1Instance = new Future.value(new S1());
FutureOr<S1> returnValueFunc() => forgetType(t0Instance);
class ReturnValueTest {
static FutureOr<S1> staticTestMethod() => forgetType(t0Instance);
FutureOr<S1> testMethod() => forgetType(t0Instance);
FutureOr<S1> get testGetter => forgetType(t0Instance);
class ReturnValueGen<X> {
X testMethod() => forgetType(t0Instance);
X get testGetter => forgetType(t0Instance);
main() {
FutureOr<S1> 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<FutureOr<S1>>().testMethod();}, (e) => e is TypeError);
Expect.throws(() {new ReturnValueGen<FutureOr<S1>>().testGetter;}, (e) => e is TypeError);
//# -->