blob: 1d2cb11e60e38f46712844daf12b4756c0483656 [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.
* @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
@T1 returnValueFunc() => forgetType(t0Instance);
class ReturnValueTest {
static @T1 staticTestMethod() => forgetType(t0Instance);
@T1 testMethod() => forgetType(t0Instance);
@T1 get testGetter => forgetType(t0Instance);
class ReturnValueGen<X> {
X testMethod() => forgetType(t0Instance);
X get testGetter => forgetType(t0Instance);
main() {
@T1 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<@T1>().testMethod();}, (e) => e is TypeError);
Expect.throws(() {new ReturnValueGen<@T1>().testGetter;}, (e) => e is TypeError);
//# -->