angular-cn/packages/platform-browser-dynamic/test/testing_public_browser_spec.ts

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/**
* @license
* Copyright Google Inc. All Rights Reserved.
*
* Use of this source code is governed by an MIT-style license that can be
* found in the LICENSE file at https://angular.io/license
*/
import {ResourceLoader} from '@angular/compiler';
import {Component} from '@angular/core';
import {TestBed, async, fakeAsync, inject, tick} from '@angular/core/testing';
import {ResourceLoaderImpl} from '../src/resource_loader/resource_loader_impl';
// Components for the tests.
class FancyService {
value: string = 'real value';
getAsyncValue() { return Promise.resolve('async value'); }
getTimeoutValue() {
return new Promise(
(resolve, reject) => { setTimeout(() => { resolve('timeout value'); }, 10); });
}
}
@Component({
selector: 'external-template-comp',
templateUrl: '/base/packages/platform-browser/test/static_assets/test.html'
})
class ExternalTemplateComp {
}
@Component({selector: 'bad-template-comp', templateUrl: 'non-existant.html'})
class BadTemplateUrl {
}
// Tests for angular2/testing bundle specific to the browser environment.
// For general tests, see test/testing/testing_public_spec.ts.
export function main() {
describe('test APIs for the browser', () => {
describe('using the async helper', () => {
let actuallyDone: boolean;
beforeEach(() => { actuallyDone = false; });
afterEach(() => { expect(actuallyDone).toEqual(true); });
it('should run async tests with ResourceLoaders', async(() => {
const resourceLoader = new ResourceLoaderImpl();
resourceLoader.get('/base/packages/platform-browser/test/static_assets/test.html')
.then(() => { actuallyDone = true; });
}),
10000); // Long timeout here because this test makes an actual ResourceLoader.
});
describe('using the test injector with the inject helper', () => {
describe('setting up Providers', () => {
beforeEach(() => {
TestBed.configureTestingModule(
{providers: [{provide: FancyService, useValue: new FancyService()}]});
});
it('provides a real ResourceLoader instance',
inject([ResourceLoader], (resourceLoader: ResourceLoader) => {
expect(resourceLoader instanceof ResourceLoaderImpl).toBeTruthy();
}));
it('should allow the use of fakeAsync',
fakeAsync(inject([FancyService], (service: any /** TODO #9100 */) => {
let value: any /** TODO #9100 */;
service.getAsyncValue().then(function(val: any /** TODO #9100 */) { value = val; });
tick();
expect(value).toEqual('async value');
})));
});
});
describe('errors', () => {
let originalJasmineIt: any;
const patchJasmineIt = () => {
let resolve: (result: any) => void;
let reject: (error: any) => void;
const promise = new Promise((res, rej) => {
resolve = res;
reject = rej;
});
originalJasmineIt = jasmine.getEnv().it;
jasmine.getEnv().it = (description: string, fn: any /** TODO #9100 */) => {
const done = () => { resolve(null); };
(<any>done).fail = (err: any /** TODO #9100 */) => { reject(err); };
fn(done);
return null;
};
return promise;
};
const restoreJasmineIt = () => { jasmine.getEnv().it = originalJasmineIt; };
it('should fail when an ResourceLoader fails', (done: any /** TODO #9100 */) => {
const itPromise = patchJasmineIt();
it('should fail with an error from a promise', async(() => {
TestBed.configureTestingModule({declarations: [BadTemplateUrl]});
TestBed.compileComponents();
}));
itPromise.then(
() => { done.fail('Expected test to fail, but it did not'); },
(err: any) => {
expect(err.message)
.toEqual('Uncaught (in promise): Failed to load non-existant.html');
done();
});
restoreJasmineIt();
}, 10000);
});
describe('TestBed createComponent', function() {
it('should allow an external templateUrl', async(() => {
TestBed.configureTestingModule({declarations: [ExternalTemplateComp]});
TestBed.compileComponents().then(() => {
const componentFixture = TestBed.createComponent(ExternalTemplateComp);
componentFixture.detectChanges();
expect(componentFixture.nativeElement.textContent).toEqual('from external template\n');
});
}),
10000); // Long timeout here because this test makes an actual ResourceLoader request, and
// is slow
// on Edge.
});
});
}