| // Copyright (c) 2012, 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. |
| |
| import "package:expect/expect.dart"; |
| |
| class A {} |
| |
| class B extends A {} |
| |
| main() { |
| var a = new A(); |
| var b = new B(); |
| |
| Expect.isTrue(a is A); |
| Expect.isTrue(a is Object); |
| Expect.isTrue(!(a is B)); |
| |
| Expect.isTrue(b is A); |
| Expect.isTrue(b is Object); |
| Expect.isTrue(b is B); |
| |
| Expect.equals("true", (a is A).toString()); |
| Expect.equals("true", (a is Object).toString()); |
| Expect.equals("false", (a is B).toString()); |
| |
| Expect.equals("true", (b is A).toString()); |
| Expect.equals("true", (b is Object).toString()); |
| Expect.equals("true", (b is B).toString()); |
| |
| var c = new A(); |
| Expect.isTrue(c is Object); |
| |
| c = new A(); |
| Expect.equals("true", (c is Object).toString()); |
| } |