| // 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. |
| |
| // @dart = 2.9 |
| |
| @JS() |
| library js_typed_interop_test; |
| |
| import 'dart:html'; |
| |
| import 'package:js/js.dart'; |
| import 'package:expect/minitest.dart'; |
| |
| _injectJs() { |
| document.body.append(new ScriptElement() |
| ..type = 'text/javascript' |
| ..innerHtml = r""" |
| var Foo = { |
| get42: function(b) { return arguments.length >= 1 ? b : 42; } |
| }; |
| """); |
| } |
| |
| @JS() |
| class Foo { |
| external static num get42([num b]); |
| } |
| |
| main() { |
| _injectJs(); |
| |
| test('call directly from dart', () { |
| expect(Foo.get42(2), 2); |
| expect(Foo.get42(), 42); |
| }); |
| |
| test('call tearoff from dart with arg', () { |
| var f = Foo.get42; |
| expect(f(2), 2); |
| }); |
| |
| test('call tearoff from dart with no arg', () { |
| var f = Foo.get42; |
| expect(f(), 42); |
| }); |
| } |