| /* |
| * Copyright (c) 2020, 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 The definitions of least and greatest closure are changed in null |
| * safe libraries to substitute [Never] in positions where previously [Null |
| * would have been substituted, and [Object?] in positions where previously |
| * [Object] or [dynamic] would have been substituted. |
| * @description Check that correct type is substituted for [typedef check<X> = |
| * void Function(X x)]. |
| . |
| * @note Read more about the least and greatest closure test template: |
| * https://github.com/dart-lang/co19/issues/575#issuecomment-613542349 |
| * |
| * @Issue 44161, 44165 |
| * @author iarkh@unipro.ru |
| */ |
| |
| import "../../../../Utils/expect.dart"; |
| |
| typedef check<X> = void Function(X x); |
| |
| void main() { |
| void f<X>(check<X> Function() g) => g(); |
| // Verify that we can call the function with the specified arguments |
| f(() => captureTypeArgument()..call(true)); |
| f(() => captureTypeArgument()..call(null)); |
| f(() => captureTypeArgument()..call(throw 1)); |
| f(() => captureTypeArgument()..call('Hello')); |
| |
| f(() => captureTypeArgument()..call()); |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| f(() => captureTypeArgument()..call(x: 'Hello')); |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| |
| // Verify that the return type is `void`: Returned value not usable, |
| // not even to access a member of `Object`. |
| f(() => captureTypeArgument()..call(false).toString()); |
| // ^ |
| // [analyzer] unspecified |
| // [cfe] unspecified |
| } |