/* eslint-env mocha */

import assert from 'assert'
import roundToNearestMinutes from '.'

describe('roundToNearestMinutes', () => {
  it('rounds given date to the nearest minute by default', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 16, 16)
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 16, 0))
  })

  it('accepts a timestamp', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 13, 16).getTime()
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 13, 0))
  })

  it('rounds to the closest x minutes if nearestTo is provided', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 10, 30),
      { nearestTo: 4 }
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 12, 0))
  })

  it('rounds up >=30 seconds for nearestTo=1', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 13, 30)
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 14, 0))
  })

  it('rounds down <30 seconds for nearestTo=1', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 13, 29, 999)
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 13, 0))
  })

  it('does not mutate the original date', () => {
    const date = new Date(2014, 6 /* Jul */, 10, 12, 10, 10, 99)
    roundToNearestMinutes(date)
    assert.deepStrictEqual(
      date,
      new Date(2014, 6 /* Jul */, 10, 12, 10, 10, 99)
    )
  })

  it('rounds according to the passed mode - floor', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 10, 30, 5),
      { roundingMethod: 'floor' }
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 11, 0))
  })

  it('rounds according to the passed mode - floor - when nearestTo is provided', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 10, 30, 5),
      { nearestTo: 10, roundingMethod: 'floor' }
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 10, 0))
  })

  it('rounds according to the passed mode - ceil', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 10, 30, 5),
      { roundingMethod: 'ceil' }
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 12, 0))
  })

  it('rounds according to the passed mode - ceil - when nearestTo is provided', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 10, 30, 5),
      { nearestTo: 10, roundingMethod: 'ceil' }
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 20, 0))
  })

  it('rounds according to the passed mode - round - when nearestTo is provided', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 10, 30, 5),
      { nearestTo: 10, roundingMethod: 'round' }
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 10, 0))
  })

  it('rounds according to the passed mode - trunc - when nearestTo is provided', () => {
    const result = roundToNearestMinutes(
      new Date(2014, 6 /* Jul */, 10, 12, 10, 30, 5),
      { nearestTo: 10, roundingMethod: 'trunc' }
    )
    assert.deepStrictEqual(result, new Date(2014, 6 /* Jul */, 10, 12, 10, 0))
  })

  it('returns `Invalid Date` if the given date is invalid', () => {
    const result = roundToNearestMinutes(new Date(NaN))
    assert(result instanceof Date && isNaN(result.getTime()))
  })

  it('throws `TypeError` exception if passed less than 1 argument', () => {
    // @ts-expect-error
    assert.throws(roundToNearestMinutes.bind(null), TypeError)
  })

  it('throws `RangeError` if nearestTo is not between 1 and 30', () => {
    const date = new Date(2014, 6 /* Jul */, 10, 12, 10, 30)
    assert.throws(
      roundToNearestMinutes.bind(null, date, { nearestTo: 31 }),
      RangeError
    )
    assert.throws(
      roundToNearestMinutes.bind(null, date, { nearestTo: 0 }),
      RangeError
    )
  })
})