单元测试Angular If condition make按钮禁用

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({
      declarations: [ MyComponent ]
    })
    .compileComponents();
  });

  beforeEach(() => {
    fixture = TestBed.createComponent(MyComponent);
    component = fixture.componentInstance;
    fixture.detectChanges();
  });

  it('should disable button when condition is true', () => {
    component.condition = true; // 设置条件为真
    fixture.detectChanges();

    const button = fixture.nativeElement.querySelector('button');
    expect(button.disabled).toBe(true); // 断言按钮被禁用
  });

  it('should enable button when condition is false', () => {
    component.condition = false; // 设置条件为假
    fixture.detectChanges();

    const button = fixture.nativeElement.querySelector('button');
    expect(button.disabled).toBe(false); // 断言按钮可用
  });
});