import getSlots from "@lib/slots";

import { expect, it } from "@jest/globals";

import MockDate from "mockdate";

import dayjs from "dayjs";

import utc from "dayjs/plugin/utc";

import timezone from "dayjs/plugin/timezone";

dayjs.extend(utc);

dayjs.extend(timezone);

MockDate.set('2021-06-20T11:59:59Z');

it('can fit 24 hourly slots for an empty day', async () => {

// 24h in a day.

expect(getSlots({

inviteeDate: dayjs().add(1, 'day'),

frequency: 60,

workingHours: [

{ days: [...Array(7).keys()], startTime: 0, endTime: 1440 }

],

organizerTimeZone: 'Europe/London'

})).toHaveLength(24);

});

it('only shows future booking slots on the same day', async () => {

// The mock date is 1s to midday, so 12 slots should be open given 0 booking notice.

expect(getSlots({

inviteeDate: dayjs(),

frequency: 60,

workingHours: [

{ days: [...Array(7).keys()], startTime: 0, endTime: 1440 }

],

organizerTimeZone: 'GMT'

})).toHaveLength(12);

});

it('can cut off dates that due to invitee timezone differences fall on the next day', async () => {

expect(getSlots({

inviteeDate: dayjs().tz('Europe/Amsterdam').startOf('day'), // time translation +01:00

frequency: 60,

workingHours: [

{ days: [0], startTime: 1380, endTime: 1440 }

],

organizerTimeZone: 'Europe/London'

})).toHaveLength(0);

});

it('can cut off dates that due to invitee timezone differences fall on the previous day', async () => {

expect(getSlots({

inviteeDate: dayjs().startOf('day'), // time translation -01:00

frequency: 60,

workingHours: [

{ days: [0], startTime: 0, endTime: 60 }

],

organizerTimeZone: 'Europe/London'

})).toHaveLength(0);

});