Testing

npm test

ng test

{
  "extends": "./tsconfig.json",
  "compilerOptions": {
    "outDir": "./out-tsc/spec",
    "types": ["vitest/globals"]
  },
  "include": [
    "src/**/*.d.ts",
    "src/**/*.spec.ts"
  ]
}

src/
├── app/
│   ├── component.ts
│   └── component.spec.ts

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;
    fixture.detectChanges();
  });

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

import { TestBed } from '@angular/core/testing';
import { MyService } from './my.service';

describe('MyService', () => {
  let service: MyService;

  beforeEach(() => {
    TestBed.configureTestingModule({});
    service = TestBed.inject(MyService);
  });

  it('should be created', () => {
    expect(service).toBeTruthy();
  });
});