import { ComponentFixture, TestBed } from '@angular/core/testing'; import { MyComponent } from './my.component'; describe('MyComponent', () => { let component: MyComponent; let fixture: ComponentFixtureIn this example, we are testing a `MyComponent` component. Each test is wrapped in a `beforeEach` block, which executes the specified function before each test. Within the `beforeEach` block, we use `TestBed.createComponent` to create an instance of `MyComponent` and get a `ComponentFixture` instance for it. We then use `fixture.componentInstance` to access the component instance, and `fixture.detectChanges()` to trigger change detection and update the view. The first test simply checks that the component was created successfully. The second test interacts with the component by clicking a button and checking that the title has been updated. The `@angular/core/testing` package is part of the Angular framework and is used for testing Angular applications.; beforeEach(async () => { await TestBed.configureTestingModule({ declarations: [ MyComponent ] }) .compileComponents(); }); beforeEach(() => { fixture = TestBed.createComponent(MyComponent); component = fixture.componentInstance; fixture.detectChanges(); }); it('should create', () => { expect(component).toBeTruthy(); }); it('should update the title when the button is clicked', () => { const button = fixture.nativeElement.querySelector('button'); button.click(); fixture.detectChanges(); expect(fixture.nativeElement.querySelector('h1').textContent).toContain('New Title'); }); });