/*
TODO:
- quick test for when button is clicked

SEE ALSO:
- other range intersection tests handled by next-button
*/

import { CalendarWrapper } from '../lib/wrappers/CalendarWrapper.js'

describe('prev button', () => {
  pushOptions({
    initialView: 'timeGridWeek',
    initialDate: '2017-06-08',
  })

  describe('when there is no specified validRange', () => {
    it('is enabled', () => {
      expectEnabled(initCalendar(), true)
    })
  })

  describe('when prev date range is completely before validRange', () => {
    pushOptions({
      validRange: { start: '2018-06-12' },
      dateIncrement: { years: 1 }, // prev range is 2016-06-05 - 2016-06-12
    })
    it('is disabled', () => {
      expectEnabled(initCalendar(), false)
    })
  })

  describe('when month view', () => {
    pushOptions({
      initialView: 'dayGridMonth',
      initialDate: '2017-03-01',
      validRange: { start: '2017-02-07' },
      dateIncrement: { years: 1 }, // prev range is 2016-06-05 - 2016-06-12
    })

    it('when prev date range is partially before validRange', () => {
      expectEnabled(initCalendar(), false)
    })
  })

  describe('when day before current day is a hidden day', () => {
    pushOptions({
      initialDate: '2017-03-27',
      initialView: 'dayGridDay',
      weekends: false,
      dateIncrement: { years: 1 }, // prev range is 2016-06-05 - 2016-06-12
    })
    it('is enabled', () => {
      expectEnabled(initCalendar(), true)
    })
  })

  describe('when initialDate is constrained backward to validRange and prev week is valid', () => {
    pushOptions({
      initialDate: '2017-07-17',
      initialView: 'timeGridWeek',
      validRange: { start: '2017-03-20', end: '2017-03-30' },
    })
    it('is enabled', () => {
      expectEnabled(initCalendar(), true)
    })
  })

  function expectEnabled(calendar, bool) {
    let toolbarWrapper = new CalendarWrapper(calendar).toolbar
    expect(toolbarWrapper.getButtonEnabled('prev')).toBe(bool)
  }
})