测试 getLocaleFirstDayOfWeek

Question

瑞典周从星期一开始。使用 getLocaleFirstDayOfWeek 获取一周的第一天。测试时，它一直提供星期日作为一周的第一天。它需要测试来注册本地数据才能正常工作。这是缺陷还是符合预期？

import { getLocaleFirstDayOfWeek, registerLocaleData, WeekDay } from '@angular/common';
import EN_SE from '@angular/common/locales/en-SE';

describe('getLocaleFirstDayOfWeek', () => {
  beforeAll(() => registerLocaleData(EN_SE, 'en-SE'));

  fit('should start the week on monday', () => {
    const firstDayOfWeek = getLocaleFirstDayOfWeek('en-SE');
    expect(firstDayOfWeek).toEqual(WeekDay.Monday);
  });
});

Answer 1

好的找到答案了！从 Angular 5 开始，默认情况下仅包含 en-US，任何其他语言环境都需要通过 registerLocaleData.

注册

By default Angular now only contains locale data for the language en-US, if you set the value of LOCALE_ID to another locale, you will have to import new locale data for this language because we don’t use the intl API anymore.

测试 getLocaleFirstDayOfWeek

Testing getLocaleFirstDayOfWeek

angular

unit-testing

date

locale