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wardbellwardbell
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docs(testing): more scenarios (#2396)
1 parent 1027e3e commit 7b5244c

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‎public/docs/_examples/testing/ts/app-specs.html‎

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<script>
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var __spec_files__ = [
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'app/about.component.spec',
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'app/app.component.spec',
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'app/app.component.router.spec',
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'app/banner.component.spec',

‎public/docs/_examples/testing/ts/app/about.component.spec.ts‎

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import { NO_ERRORS_SCHEMA } from '@angular/core';
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import { ComponentFixture, TestBed } from '@angular/core/testing';
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import { By } from '@angular/platform-browser';
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import { AboutComponent } from './about.component';
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import { HighlightDirective } from './shared/highlight.directive';
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let fixture: ComponentFixture<AboutComponent>;
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describe('AboutComponent (highlightDirective)', () => {
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// #docregion tests
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beforeEach(() => {
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fixture = TestBed.configureTestingModule({
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declarations: [ AboutComponent, HighlightDirective],
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schemas: [ NO_ERRORS_SCHEMA ]
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})
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.createComponent(AboutComponent);
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fixture.detectChanges(); // initial binding
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});
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it('should have skyblue <h2>', () => {
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const de = fixture.debugElement.query(By.css('h2'));
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expect(de.styles['backgroundColor']).toBe('skyblue');
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});
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// #enddocregion tests
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});

‎public/docs/_examples/testing/ts/app/about.component.ts‎

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// #docregion
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import { Component } from '@angular/core';
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import { Component } from '@angular/core';
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@Component({
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template: `
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<h2 highlight="skyblue">About</h2>
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<twain-quote></twain-quote>
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<p>All about this sample</p>
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`,
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styleUrls: ['app/shared/styles.css']
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<p>All about this sample</p>`
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})
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export class AboutComponent { }

‎public/docs/_examples/testing/ts/app/app-routing.module.ts‎

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import { NgModule } from '@angular/core';
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import { RouterModule } from '@angular/router';
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import { AboutComponent } from './about.component';
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@NgModule({
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imports: [
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RouterModule.forRoot([
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{ path: '', redirectTo: 'dashboard', pathMatch: 'full'},
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{ path: 'about', component: AboutComponent },
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{ path: 'heroes', loadChildren: 'app/hero/hero.module#HeroModule'}
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])
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],
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exports: [ RouterModule ] // re-export the module declarations
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})
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export class AppRoutingModule { };

‎public/docs/_examples/testing/ts/app/app.component.html‎

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<!-- #docregion -->
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<app-banner></app-banner>
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<app-welcome></app-welcome>
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‎public/docs/_examples/testing/ts/app/app.component.spec.ts‎

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// #docplaster
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import { async, ComponentFixture, TestBed
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} from '@angular/core/testing';
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import { NO_ERRORS_SCHEMA } from '@angular/core';
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import { DebugElement } from '@angular/core';
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import { By } from '@angular/platform-browser';
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import { AppComponent } from './app.component';
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import { BannerComponent } from './banner.component';
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import { SharedModule } from './shared/shared.module';
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import { Router, RouterStub, RouterLinkDirectiveStub, RouterOutletStubComponent
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} from '../testing';
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// #docregion setup-schemas
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import { NO_ERRORS_SCHEMA } from '@angular/core';
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// #enddocregion setup-schemas
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// #docregion setup-stubs-w-imports
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import { Component } from '@angular/core';
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// #docregion setup-schemas
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import { AppComponent } from './app.component';
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// #enddocregion setup-schemas
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import { BannerComponent } from './banner.component';
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import { RouterLinkStubDirective } from '../testing';
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// #docregion setup-schemas
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import { RouterOutletStubComponent } from '../testing';
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// #enddocregion setup-schemas
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@Component({selector: 'app-welcome', template: ''})
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class WelcomeStubComponent {}
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// #enddocregion setup-stubs-w-imports
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let comp: AppComponent;
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let fixture: ComponentFixture<AppComponent>;
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describe('AppComponent & TestModule', () => {
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// #docregion setup-stubs, setup-stubs-w-imports
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beforeEach( async(() => {
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TestBed.configureTestingModule({
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declarations: [
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AppComponent, BannerComponent,
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RouterLinkDirectiveStub, RouterOutletStubComponent
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],
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providers: [{ provide: Router, useClass: RouterStub }],
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schemas: [NO_ERRORS_SCHEMA]
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AppComponent,
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BannerComponent, WelcomeStubComponent,
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RouterLinkStubDirective, RouterOutletStubComponent
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]
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})
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.compileComponents()
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.then(() => {
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fixture = TestBed.createComponent(AppComponent);
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comp = fixture.componentInstance;
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});
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}));
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// #enddocregion setup-stubs, setup-stubs-w-imports
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tests();
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});
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function tests() {
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it('can instantiate it', () => {
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expect(comp).not.toBeNull();
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});
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it('can get RouterLinks from template', () => {
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fixture.detectChanges();
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const links = fixture.debugElement
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// find all elements with an attached FakeRouterLink directive
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.queryAll(By.directive(RouterLinkDirectiveStub))
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// use injector to get the RouterLink directive instance attached to each element
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.map(de => de.injector.get(RouterLinkDirectiveStub) as RouterLinkDirectiveStub);
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expect(links.length).toBe(3, 'should have 3 links');
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expect(links[0].linkParams).toBe('/dashboard', '1st link should go to Dashboard');
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expect(links[1].linkParams).toBe('/heroes', '1st link should go to Heroes');
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});
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it('can click Heroes link in template', () => {
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fixture.detectChanges();
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// Heroes RouterLink DebugElement
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const heroesLinkDe = fixture.debugElement
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.queryAll(By.directive(RouterLinkDirectiveStub))[1];
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expect(heroesLinkDe).toBeDefined('should have a 2nd RouterLink');
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const link = heroesLinkDe.injector.get(RouterLinkDirectiveStub) as RouterLinkDirectiveStub;
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expect(link.navigatedTo).toBeNull('link should not have navigate yet');
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heroesLinkDe.triggerEventHandler('click', null);
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//////// Testing w/ NO_ERRORS_SCHEMA //////
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describe('AppComponent & NO_ERRORS_SCHEMA', () => {
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// #docregion setup-schemas
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beforeEach( async(() => {
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TestBed.configureTestingModule({
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declarations: [ AppComponent, RouterLinkStubDirective ],
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schemas: [ NO_ERRORS_SCHEMA ]
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})
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fixture.detectChanges();
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expect(link.navigatedTo).toBe('/heroes');
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});
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}
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.compileComponents()
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.then(() => {
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fixture = TestBed.createComponent(AppComponent);
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comp = fixture.componentInstance;
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});
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}));
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// #enddocregion setup-schemas
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tests();
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});
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//////// Testing w/ real root module //////
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// Best to avoid
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// Tricky because we are disabling the router and its configuration
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// Better to use RouterTestingModule
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import { AppModule } from './app.module';
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import { AppRoutingModule } from './app-routing.module';
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describe('AppComponent & AppModule', () => {
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beforeEach( async(() => {
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TestBed.configureTestingModule({
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imports: [ AppModule ],
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})
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.overrideModule(AppModule, {
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// Must get rid of `RouterModule.forRoot` to prevent attempt to configure a router
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// Can't remove it because it doesn't have a known type (`forRoot` returns an object)
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// therefore, must reset the entire `imports` with just the necessary stuff
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set: { imports: [ SharedModule ]}
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imports: [ AppModule ]
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})
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// Separate override because cannot both `set` and `add/remove` in same override
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// Get rid of app's Router configuration otherwise many failures.
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// Doing so removes Router declarations; add the Router stubs
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.overrideModule(AppModule, {
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remove: {
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imports: [ AppRoutingModule ]
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},
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add: {
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declarations: [ RouterLinkDirectiveStub, RouterOutletStubComponent ],
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providers: [{ provide: Router, useClass: RouterStub }]
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declarations: [ RouterLinkStubDirective, RouterOutletStubComponent ]
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}
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})
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tests();
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});
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function tests() {
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let links: RouterLinkStubDirective[];
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let linkDes: DebugElement[];
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// #docregion test-setup
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beforeEach(() => {
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// trigger initial data binding
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fixture.detectChanges();
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// find DebugElements with an attached RouterLinkStubDirective
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linkDes = fixture.debugElement
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.queryAll(By.directive(RouterLinkStubDirective));
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// get the attached link directive instances using the DebugElement injectors
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links = linkDes
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.map(de => de.injector.get(RouterLinkStubDirective) as RouterLinkStubDirective);
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});
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// #enddocregion test-setup
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it('can instantiate it', () => {
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expect(comp).not.toBeNull();
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});
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// #docregion tests
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it('can get RouterLinks from template', () => {
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expect(links.length).toBe(3, 'should have 3 links');
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expect(links[0].linkParams).toBe('/dashboard', '1st link should go to Dashboard');
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expect(links[1].linkParams).toBe('/heroes', '1st link should go to Heroes');
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});
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it('can click Heroes link in template', () => {
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const heroesLinkDe = linkDes[1];
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const heroesLink = links[1];
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expect(heroesLink.navigatedTo).toBeNull('link should not have navigated yet');
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heroesLinkDe.triggerEventHandler('click', null);
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fixture.detectChanges();
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expect(heroesLink.navigatedTo).toBe('/heroes');
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});
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// #docregion tests
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}

‎public/docs/_examples/testing/ts/app/app.component.ts‎

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// #docregion
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import { Component } from '@angular/core';
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import { Component } from '@angular/core';
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@Component({
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selector: 'my-app',
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templateUrl: 'app/app.component.html'

‎public/docs/_examples/testing/ts/app/app.module.ts‎

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import { NgModule } from '@angular/core';
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import { BrowserModule } from '@angular/platform-browser';
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import { RouterModule } from '@angular/router';
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import { AppComponent } from './app.component';
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import { AppRoutingModule } from './app-routing.module';
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import { AboutComponent } from './about.component';
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import { BannerComponent } from './banner.component';
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import { HeroService,
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imports: [
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BrowserModule,
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DashboardModule,
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RouterModule.forRoot([
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{ path: '', redirectTo: 'dashboard', pathMatch: 'full'},
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{ path: 'about', component: AboutComponent },
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{ path: 'heroes', loadChildren: 'app/hero/hero.module#HeroModule'}
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]),
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AppRoutingModule,
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SharedModule
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],
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providers: [ HeroService, TwainService, UserService ],

‎public/docs/_examples/testing/ts/app/dashboard/dashboard.component.spec.ts‎

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// #docregion router-stub
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class RouterStub {
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navigateByUrl(url: string) { return url; }
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navigateByUrl(url: string) { return url; }
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}
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// #enddocregion router-stub
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‎public/docs/_examples/testing/ts/app/dashboard/dashboard.component.ts‎

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@Component({
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selector: 'app-dashboard',
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templateUrl: 'app/dashboard/dashboard.component.html',
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styleUrls: [
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'app/shared/styles.css',
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'app/dashboard/dashboard.component.css'
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]
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styleUrls: ['app/dashboard/dashboard.component.css']
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})
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export class DashboardComponent implements OnInit {
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