| // 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. |
| |
| import "native_testing.dart"; |
| |
| // Native classes can have subclasses that are not declared to the program. The |
| // subclasses are indistinguishable from the base class. This means that |
| // abstract native classes can appear to have instances. |
| |
| @Native("A") |
| abstract class A {} |
| |
| @Native("B") |
| abstract class B { |
| foo() native; |
| } |
| |
| class C {} |
| |
| makeA() native; |
| makeB() native; |
| |
| void setup() { |
| JS('', r""" |
| (function(){ |
| function A(){} |
| function B(){} |
| B.prototype.foo = function() { return 'B.foo'; }; |
| self.makeA = function(){return new A()}; |
| self.makeB = function(){return new B()}; |
| self.nativeConstructor(A); |
| self.nativeConstructor(B); |
| })()"""); |
| applyTestExtensions(['A', 'B']); |
| } |
| |
| main() { |
| nativeTesting(); |
| setup(); |
| |
| var a = makeA(); |
| var b = makeB(); |
| var c = confuse(new C()); |
| |
| Expect.isTrue(a is A); |
| Expect.isFalse(b is A); |
| Expect.isFalse(c is A); |
| |
| Expect.isFalse(a is B); |
| Expect.isTrue(b is B); |
| Expect.isFalse(c is B); |
| |
| Expect.isFalse(a is C); |
| Expect.isFalse(b is C); |
| Expect.isTrue(c is C); |
| |
| Expect.equals('B.foo', b.foo()); |
| } |