不创建新组件即可测试Angular2指令

import { TestBed, ComponentFixture } from '@angular/core/testing';
import { Component } from '@angular/core';
import { YourDirective } from './your.directive';

@Component({
  template: `
    <div yourDirective></div>
  `
})
class TestComponent {}

describe('YourDirective', () => {
  let fixture: ComponentFixture<TestComponent>;

  beforeEach(() => {
    TestBed.configureTestingModule({
      declarations: [YourDirective, TestComponent]
    });

    fixture = TestBed.createComponent(TestComponent);
    fixture.detectChanges();
  });

  it('should do something', () => {
    // 进行指令的测试逻辑
  });
});