angular-jest

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Translated

ALWAYS use when testing Angular applications with Jest, configuring Jest, or migrating from Jasmine/Karma to Jest.

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Sourceoguzhan18/angular-ecosystem-skills

Added on2026-04-03

NPX Install

npx skill4agent add oguzhan18/angular-ecosystem-skills angular-jest

SKILL.md Content

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Angular + Jest

Version: Jest 29.x (2025) Tags: Jest, Testing, Unit Tests

References: Jest • jest-preset-angular

Best Practices

Install Jest

bash

npm install --save-dev jest @types/jest jest-preset-angular

Configure Jest

// jest.config.js
module.exports = {
  preset: 'jest-preset-angular',
  setupFilesAfterEnv: ['<rootDir>/setup-jest.ts'],
  testPathIgnorePatterns: ['<rootDir>/node_modules/'],
};

Write test

import { ComponentFixture, TestBed } from '@angular/core/testing';
import { MyComponent } from './my.component';

describe('MyComponent', () => {
  let component: MyComponent;
  let fixture: ComponentFixture<MyComponent>;

  beforeEach(async () => {
    await TestBed.configureTestingModule({
      imports: [MyComponent]
    }).compileComponents();

    fixture = TestBed.createComponent(MyComponent);
    component = fixture.componentInstance;
  });

  it('should create', () => {
    expect(component).toBeTruthy();
  });
});