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…

Sometimes when writing a unit test, you know that the module you're testing imports a module that you would like to observe, or at the very least mock to prevent side effects like network activity or file system operations. For JavaScript unit tests…

When testing functions that make HTTP requests, it's not preferable for those requests to actually run. Using the nock JavaScript library, we can mock out HTTP requests so that they don't actually happen, control the responses from those requests, an…

http://www.opensourcetesting.org/unit_c.php API Sanity AutoTest Description: An automatic generator of basic unit tests for a shared C/C++ library. It helps to quickly generate simple ("sanity" or "shallow"-quality) test cases for ever…

Previously we have seen how to do Unit testing with Mockito; import org.junit.Test; import static org.junit.Assert.assertEquals; import static org.mockito.Mockito.mock; import static org.mockito.Mockito.when; public class SomeBusinessMockTests { @Tes…

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…