tests/html/mirrors_js_typed_interop_test.dart

// Copyright (c) 2015, 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.

library tests.html.mirrors_js_typed_interop_test;

import 'dart:mirrors';
import 'dart:html';

import 'package:js/js.dart';
import 'package:unittest/unittest.dart';
import 'package:unittest/html_config.dart';

_injectJs() {
  document.body.append(new ScriptElement()
    ..type = 'text/javascript'
    ..innerHtml = r"""
  window.foo = {
    x: 3,
    z: 100,
    multiplyBy2: function(arg) { return arg * 2; },
  };
""");
}

@Js()
external Foo get foo;

@Js()
class Foo {
  external int get x;
  external set x(v);
  external num multiplyBy2(num y);
}

main() {
  _injectJs();

  useHtmlConfiguration();

  test('dynamic dispatch', () {
    var f = foo;
    expect(f.x, 3);
    // JsInterop methods are not accessible using reflection.
    expect(() => reflect(f).setField(#x, 123), throws);
    expect(f.x, 3);
  });
}