angular-docs-cn/modules_dart/angular2_testing/README.md

47 lines
1.2 KiB
Markdown

Contains helpers to run unit tests for angular2 components and injectables,
backed by the `package:test` [library](https://pub.dartlang.org/packages/test).
Usage
-----
Update the dev dependencies in your `pubspec.yaml` to include the angular testing
and test packages:
```yaml
dev_dependencies:
test: '^0.12.6'
angular2_testing: any
```
Then in your test files, use angular2_testing helpers in place of `setUp` and `test`:
```dart
import 'package:test/test.dart';
import 'package:angular2_testing/angular2_testing.dart';
void main() {
// This must be called at the beginning of your tests.
initAngularTests();
// Initialize the injection tokens you will use in your tests.
setUpProviders(() => [provide(MyToken, useValue: 'my string'), TestService]);
// You can then get tokens from the injector via ngSetUp and ngTest.
ngSetUp((TestService testService) {
testService.initialize();
});
ngTest('can grab injected values', (@Inject(MyToken) token, TestService testService) {
expect(token, equals('my string'));
expect(testService.status, equals('ready'));
});
}
```
Examples
--------
A sample test is available in `test/angular2_testing_test.dart`.