Angular·Angular from components to production

Build and test

Create a production build, budgets and a component test.

Intermediate 18 min read Lesson 10 of 300 Challenge included

What you will be able to do

Run ng build before every release.
Watch the bundle budgets.
Test components through the DOM.
Mock HTTP with provideHttpClientTesting.

In plain English

ng build compiles an optimized bundle and enforces size budgets. Tests use the Angular testing utilities with a TestBed. Keep tests focused on behaviour: render, interact, assert what the user sees.

lesson-card.spec.tsTYPESCRIPT

import { TestBed } from '@angular/core/testing'
import { LessonCardComponent } from './lesson-card.component'

it('renders the title', () => {
  TestBed.configureTestingModule({ imports: [LessonCardComponent] })
  const fixture = TestBed.createComponent(LessonCardComponent)
  fixture.componentRef.setInput('title', 'CSS Grid')
  fixture.detectChanges()
  expect(fixture.nativeElement.textContent).toContain('CSS Grid')
})

Your turn

Run the build

Easy

Write the command that builds an Angular app for production.

BASH · starter

ng

Check your understanding before moving on.

Knowledge checkQuestion 1

Which command creates an optimized production build?

Select an answer to continue

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Next: Drill 1: Summarise — Setup and the CLI

Lesson 10 of 300 · 0% of course