In a proper unit test we want to isolate external dependencies as much as possible to guarantee a reliable test outcome. Http calls represent such external dependencies. Therefore, when testing our Angular components or services that rely on data ret…

import { TestBed, ComponentFixture } from '@angular/core/testing'; import { BrowserDynamicTestingModule, platformBrowserDynamicTesting } from '@angular/platform-browser-dynamic/testing'; import { FileSizePipe } from './file-size.pipe'; import {Compon…

import { Pipe, PipeTransform } from '@angular/core'; @Pipe({ name: 'filesize' }) export class FileSizePipe implements PipeTransform { transform(size: number, extension: string = 'MB') { return (size / (1024 * 1024)).toFixed(2) + extension; } } import…

The way to test router componet needs a little bit setup, first we need to create a "router-stubs.ts". This file is a helper file. // export for convenience. export { ActivatedRoute, Router, RouterLink, RouterOutlet} from '@angular/router'; impo…

When you testing Component rendering, you often needs to call: fixture.detectChanges(); For example: it('should display original title', () => { fixture.detectChanges(); expect(el.textContent).toContain(comp.title); }); it('should display a different…

When using Ngrx, we need to know how to test the component which has Router injected. Component: import {Component} from '@angular/core'; import {FormGroup} from '@angular/forms'; import {Store} from '@ngrx/store'; import * as fromAuth from '../../re…

If sometime you want to log out the comonent html to see whether the html render correctly, you can do : import {TestBed, async, ComponentFixture} from '@angular/core/testing'; import {AppComponent} from './app.component'; import {AuFaInputComponent}…

import {ComponentFixture, TestBed} from '@angular/core/testing'; import {BrowserDynamicTestingModule, platformBrowserDynamicTesting} from '@angular/platform-browser-dynamic/testing'; import {StockCounterComponent} from './stock-counter.component'; Te…

import { Http, Response, ResponseOptions } from '@angular/http'; import { TestBed } from '@angular/core/testing'; import { BrowserDynamicTestingModule, platformBrowserDynamicTesting } from '@angular/platform-browser-dynamic/testing'; import { Observa…

http://social.technet.microsoft.com/wiki/contents/articles/32300.angularjs-unit-testing-using-karma-part-1.aspx Testing Controller Testing $httpbackend Testing Service…