blob: 45a62facff5bdb02313f020aa63fd538c84c7966 [file] [log] [blame]
// Copyright (c) 2016, 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.
/// Regression test for --fast-startup. The compiler used to emit inherit calls
/// on each fragment even for classes that were already loaded on a different
/// fragment. As a result, the inheritance chain was overwritten in non-chrome
/// browsers (by using __proto__, we evaded this issue in Chrome).
library deferred_inheritance_test;
import 'deferred_inheritance_lib2.dart';
import 'deferred_inheritance_lib1.dart' deferred as d;
import 'package:expect/expect.dart';
class B extends A {}
/// If the check `y is A` is generated as `y.$isA` then the issue is not
/// exposed. We use `assumeDynamic` to ensure that we generate as `y instanceof
/// A` in JS.
check(y) => Expect.isTrue(y is A);
main() {
check(new B());
d.loadLibrary().then((_) {
check(new d.C());
check(new B()); // This fails if we overwrite the inheritance chain.