Angular:为单元测试设置FormArray的起始值

import { FormArray, FormControl } from '@angular/forms';

const formArray = new FormArray([
  new FormControl('value1'),
  new FormControl('value2'),
  new FormControl('value3')
]);

it('should set initial value for FormArray', () => {
  // 断言FormArray的长度
  expect(formArray.length).toBe(3);

  // 断言FormArray中的值
  expect(formArray.at(0).value).toBe('value1');
  expect(formArray.at(1).value).toBe('value2');
  expect(formArray.at(2).value).toBe('value3');
});