| // 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. |
| |
| // @dart = 2.7 |
| |
| // Native testing library. Provides support for mock @Native classes and |
| // collects common imports. |
| |
| import "package:expect/expect.dart"; |
| import 'dart:_js_helper' show Native; |
| import 'dart:_foreign_helper' show JS; |
| |
| export "package:expect/expect.dart"; |
| export 'dart:_js_helper' |
| show Creates, Native, JSName, Returns, applyTestExtensions; |
| export 'dart:_foreign_helper' show JS; |
| |
| void nativeTesting() { |
| JS('', r''' |
| ((function() { |
| var toStringResultProperty = "_toStringResult"; |
| var objectToStringMethod = Object.prototype.toString; |
| |
| Object.prototype.toString = function() { |
| if (this != null) { |
| var constructor = this.constructor; |
| if (constructor != null) { |
| var result = constructor[toStringResultProperty]; |
| if (typeof result == "string") return result; |
| } |
| } |
| return objectToStringMethod.call(this); |
| }; |
| |
| // To mock a @Native class with JavaScript constructor `Foo`, add |
| // |
| // self.nativeConstructor(Foo); |
| // |
| // to the JavaScript code. |
| self.nativeConstructor = function(constructor, opt_name) { |
| var toStringResult = "[object " + (opt_name || constructor.name) + "]"; |
| constructor[toStringResultProperty] = toStringResult; |
| }; |
| })()) |
| '''); |
| } |
| |
| @pragma('dart2js:noInline') |
| @pragma('dart2js:assumeDynamic') |
| confuse(x) => x; |