angular-cn/packages/platform-browser/test/browser/title_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 {Injectable} from '@angular/core';
import {TestBed} from '@angular/core/testing';
import {BrowserModule, Title} from '@angular/platform-browser';
import {getDOM} from '@angular/platform-browser/src/dom/dom_adapter';
import {expect} from '@angular/platform-browser/testing/src/matchers';
{
describe('title service', () => {
let doc: Document;
let initialTitle: string;
let titleService: Title;
beforeEach(() => {
doc = getDOM().createHtmlDocument();
initialTitle = getDOM().getTitle(doc);
titleService = new Title(doc);
});
afterEach(() => { getDOM().setTitle(doc, initialTitle); });
it('should allow reading initial title',
() => { expect(titleService.getTitle()).toEqual(initialTitle); });
it('should set a title on the injected document', () => {
titleService.setTitle('test title');
expect(getDOM().getTitle(doc)).toEqual('test title');
expect(titleService.getTitle()).toEqual('test title');
});
it('should reset title to empty string if title not provided', () => {
titleService.setTitle(null !);
expect(getDOM().getTitle(doc)).toEqual('');
});
});
describe('integration test', () => {
@Injectable()
class DependsOnTitle {
constructor(public title: Title) {}
}
beforeEach(() => {
TestBed.configureTestingModule({
imports: [BrowserModule],
providers: [DependsOnTitle],
});
});
it('should inject Title service when using BrowserModule',
() => { expect(TestBed.get(DependsOnTitle).title).toBeAnInstanceOf(Title); });
});
}