blob: 002ca79d921e2e9991fd853024bd4cb725c7db8a [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.
// 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.
//
// Internally this exports the name on the top scope (needed for dartdevc) and
// overrides the toString show the name of the constructor like browsers do
// for native types (needed for dart2js).
self.nativeConstructor = function(constructor, opt_name, opt_dont_export) {
var toStringResult = "[object " + (opt_name || constructor.name) + "]";
constructor[toStringResultProperty] = toStringResult;
if (!opt_dont_export) self[constructor.name] = constructor;
};
})())
''');
}
@pragma('dart2js:noInline')
@pragma('dart2js:assumeDynamic')
confuse(x) => x;