@171h/dayjs-business-time/test/holidaysBusinessDays.spec.ts

A [Day.js](https://github.com/iamkun/dayjs) plugin that allows you to work with Business Time.

import dayjs from 'dayjs';
import businessTime from '../src';

describe('Holidays & Business Days', () => {
  beforeAll(() => {
    dayjs.extend(businessTime);

    const holidays = ['2021-01-01', '2021-01-25', '2021-06-03'];

    dayjs.setHolidays(holidays);
  });

  it('should successfully check a holiday', () => {
    // previously set as holiday
    const holiday = dayjs('2021-01-25');

    const isHoliday = holiday.isHoliday();

    expect(isHoliday).toBeDefined();
    expect(isHoliday).toBe(true);
  });

  it('should successfully check a non holiday', () => {
    // previously set as holiday
    const nHoliday = dayjs('2021-01-26');

    const isHoliday = nHoliday.isHoliday();

    expect(isHoliday).toBeDefined();
    expect(isHoliday).toBe(false);
  });

  it('should check if the given date is a holiday', () => {
    // previously set as holiday
    const holiday = dayjs('2021-01-25');

    const isHoliday = holiday.isHoliday();

    expect(isHoliday).toBeDefined();
    expect(isHoliday).toBe(true);
  });

  it('should successfully check a business day', () => {
    // february 4nd, 2021 is a wednesday
    const businessDay = dayjs('2021-02-04');

    const isBusinessDay = businessDay.isBusinessDay();

    expect(isBusinessDay).toBeDefined();
    expect(isBusinessDay).toBe(true);
  });

  it('should successfully check a non business day', () => {
    // february 7th, 2021 is a sunday
    const nonBusinessDay = dayjs('2021-02-07');

    const isBusinessDay = nonBusinessDay.isBusinessDay();

    expect(isBusinessDay).toBeDefined();
    expect(isBusinessDay).toBe(false);
  });
});