blob: 7bcba7e991eb3c5b0b5e6367e59a5a6621470139 [file] [log] [blame]
// 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.
abstract class A {}
abstract class B {
foo() native;
class C {}
makeA() native;
makeB() native;
void setup() {
JS('', r"""
function A(){}
function B(){} = function() { return ''; };
self.makeA = function(){return new A()};
self.makeB = function(){return new B()};
applyTestExtensions(['A', 'B']);
main() {
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);