tests/compiler/dart2js_native/subclassing_super_field_1_test.dart

// 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 "package:expect/expect.dart";
import 'dart:_foreign_helper' show JS;
import 'dart:_js_helper' show Native, Creates, setNativeSubclassDispatchRecord;
import 'dart:_interceptors' show
    findInterceptorForType, findConstructorForNativeSubclassType;

// Test for shadowed fields in classes that extend native classes.

@Native("N")
class N {
  N.init();
}

class A extends N {
  var foo = 111;
  A.init() : super.init();
}

class B extends A  {
  var foo = 222;
  B.init() : super.init();

  Afoo() => super.foo;
  Bfoo() => foo;
}

B makeB() native;

@Creates('=Object')
getBPrototype() native;

void setup() native r"""
function B() { }
makeB = function(){return new B;};

getBPrototype = function(){return B.prototype;};
""";

var inscrutable;

main() {
  setup();
  inscrutable = (x) => x;

  setNativeSubclassDispatchRecord(getBPrototype(), findInterceptorForType(B));

  B b = makeB();

  var constructor = findConstructorForNativeSubclassType(B, 'init');
  Expect.isNotNull(constructor);
  JS('', '#(#)', constructor, b);

  print(b);

  Expect.equals(222, inscrutable(b).Bfoo());
  Expect.equals(111, inscrutable(b).Afoo());

  Expect.equals(222, b.Bfoo());
  Expect.equals(111, b.Afoo());
}