| // Copyright (c) 2013, 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. |
| // Dart test program for constructors and initializers. |
| |
| // @dart = 2.9 |
| |
| // Check function subtyping for top level functions. |
| |
| import 'package:expect/expect.dart'; |
| |
| typedef int Foo(bool a, [String b]); |
| typedef int Bar(bool a, [String b]); |
| typedef int Baz(bool a, {String b}); |
| typedef int Boz(bool a); |
| |
| int foo(bool a, [String b]) => null; |
| int baz(bool a, {String b}) => null; |
| int boz(bool a, {int b}) => null; |
| |
| main() { |
| Expect.isTrue(foo is Foo, 'foo is Foo'); |
| Expect.isTrue(foo is Bar, 'foo is Bar'); |
| Expect.isFalse(foo is Baz, 'foo is Baz'); |
| Expect.isTrue(foo is Boz, 'foo is Boz'); |
| |
| Expect.isFalse(baz is Foo, 'foo is Foo'); |
| Expect.isFalse(baz is Bar, 'foo is Bar'); |
| Expect.isTrue(baz is Baz, 'foo is Baz'); |
| Expect.isTrue(baz is Boz, 'foo is Boz'); |
| |
| Expect.isFalse(boz is Foo, 'foo is Foo'); |
| Expect.isFalse(boz is Bar, 'foo is Bar'); |
| Expect.isFalse(boz is Baz, 'foo is Baz'); |
| Expect.isTrue(boz is Boz, 'foo is Boz'); |
| } |