使用Jasmin进行Angular 8单元测试EventSource

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

describe('MyComponent', () => {
  beforeEach(async(() => {
    TestBed.configureTestingModule({
      declarations: [
        MyComponent
      ],
    }).compileComponents();
  }));

  it('should create the component', async(() => {
    const fixture = TestBed.createComponent(MyComponent);
    const app = fixture.debugElement.componentInstance;
    expect(app).toBeTruthy();
  }));

  it('should receive data from EventSource', async(() => {
    const fixture = TestBed.createComponent(MyComponent);
    const app = fixture.debugElement.componentInstance;
    spyOn(app, 'handleData'); // Mock the handleData method

    // Simulate EventSource connection and data reception
    const eventSource = new EventSource('http://example.com/stream');
    eventSource.dispatchEvent(new MessageEvent('message', {
      data: 'Test data'
    }));

    fixture.detectChanges();
    expect(app.handleData).toHaveBeenCalledWith('Test data');
  }));
});