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Diffstat (limited to 'date-fns/src/differenceInCalendarQuarters')
5 files changed, 222 insertions, 0 deletions
diff --git a/date-fns/src/differenceInCalendarQuarters/benchmark.js b/date-fns/src/differenceInCalendarQuarters/benchmark.js new file mode 100644 index 0000000..098a4ee --- /dev/null +++ b/date-fns/src/differenceInCalendarQuarters/benchmark.js @@ -0,0 +1,16 @@ +// @flow +/* eslint-env mocha */ +/* global suite, benchmark */ + +import differenceInCalendarQuarters from '.' + +suite('differenceInCalendarQuarters', function () { + benchmark('date-fns', function () { + return differenceInCalendarQuarters(this.dateA, this.dateB) + }) +}, { + setup: function () { + this.dateA = new Date() + this.dateB = new Date(this.dateA.getTime() + 604800000) + } +}) diff --git a/date-fns/src/differenceInCalendarQuarters/index.d.ts b/date-fns/src/differenceInCalendarQuarters/index.d.ts new file mode 100644 index 0000000..177e072 --- /dev/null +++ b/date-fns/src/differenceInCalendarQuarters/index.d.ts @@ -0,0 +1,4 @@ +// This file is generated automatically by `scripts/build/typings.js`. Please, don't change it. + +import { differenceInCalendarQuarters } from 'date-fns' +export default differenceInCalendarQuarters diff --git a/date-fns/src/differenceInCalendarQuarters/index.js.flow b/date-fns/src/differenceInCalendarQuarters/index.js.flow new file mode 100644 index 0000000..c799819 --- /dev/null +++ b/date-fns/src/differenceInCalendarQuarters/index.js.flow @@ -0,0 +1,55 @@ +// @flow +// This file is generated automatically by `scripts/build/typings.js`. Please, don't change it. + +export type Interval = { + start: Date | number, + end: Date | number, +} + +export type Locale = { + code?: string, + formatDistance?: (...args: Array<any>) => any, + formatRelative?: (...args: Array<any>) => any, + localize?: { + ordinalNumber: (...args: Array<any>) => any, + era: (...args: Array<any>) => any, + quarter: (...args: Array<any>) => any, + month: (...args: Array<any>) => any, + day: (...args: Array<any>) => any, + dayPeriod: (...args: Array<any>) => any, + }, + formatLong?: { + date: (...args: Array<any>) => any, + time: (...args: Array<any>) => any, + dateTime: (...args: Array<any>) => any, + }, + match?: { + ordinalNumber: (...args: Array<any>) => any, + era: (...args: Array<any>) => any, + quarter: (...args: Array<any>) => any, + month: (...args: Array<any>) => any, + day: (...args: Array<any>) => any, + dayPeriod: (...args: Array<any>) => any, + }, + options?: { + weekStartsOn?: 0 | 1 | 2 | 3 | 4 | 5 | 6, + firstWeekContainsDate?: 1 | 2 | 3 | 4 | 5 | 6 | 7, + }, +} + +export type Duration = { + years?: number, + months?: number, + weeks?: number, + days?: number, + hours?: number, + minutes?: number, + seconds?: number, +} + +export type Day = 0 | 1 | 2 | 3 | 4 | 5 | 6 + +declare module.exports: ( + dateLeft: Date | number, + dateRight: Date | number +) => number diff --git a/date-fns/src/differenceInCalendarQuarters/index.ts b/date-fns/src/differenceInCalendarQuarters/index.ts new file mode 100644 index 0000000..d3569fd --- /dev/null +++ b/date-fns/src/differenceInCalendarQuarters/index.ts @@ -0,0 +1,43 @@ +import getQuarter from '../getQuarter/index' +import toDate from '../toDate/index' +import requiredArgs from '../_lib/requiredArgs/index' + +/** + * @name differenceInCalendarQuarters + * @category Quarter Helpers + * @summary Get the number of calendar quarters between the given dates. + * + * @description + * Get the number of calendar quarters between the given dates. + * + * ### v2.0.0 breaking changes: + * + * - [Changes that are common for the whole library](https://github.com/date-fns/date-fns/blob/master/docs/upgradeGuide.md#Common-Changes). + * + * @param {Date|Number} dateLeft - the later date + * @param {Date|Number} dateRight - the earlier date + * @returns {Number} the number of calendar quarters + * @throws {TypeError} 2 arguments required + * + * @example + * // How many calendar quarters are between 31 December 2013 and 2 July 2014? + * var result = differenceInCalendarQuarters( + * new Date(2014, 6, 2), + * new Date(2013, 11, 31) + * ) + * //=> 3 + */ +export default function differenceInCalendarQuarters( + dirtyDateLeft: Date | number, + dirtyDateRight: Date | number +): number { + requiredArgs(2, arguments) + + const dateLeft = toDate(dirtyDateLeft) + const dateRight = toDate(dirtyDateRight) + + const yearDiff = dateLeft.getFullYear() - dateRight.getFullYear() + const quarterDiff = getQuarter(dateLeft) - getQuarter(dateRight) + + return yearDiff * 4 + quarterDiff +} diff --git a/date-fns/src/differenceInCalendarQuarters/test.ts b/date-fns/src/differenceInCalendarQuarters/test.ts new file mode 100644 index 0000000..f889687 --- /dev/null +++ b/date-fns/src/differenceInCalendarQuarters/test.ts @@ -0,0 +1,104 @@ +/* eslint-env mocha */ + +import assert from 'power-assert' +import differenceInCalendarQuarters from '.' + +describe('differenceInCalendarQuarters', function () { + it('returns the number of calendar quarters between the given dates', function () { + const result = differenceInCalendarQuarters( + new Date(2012, 6 /* Jul */, 2, 18, 0), + new Date(2011, 6 /* Jul */, 2, 6, 0) + ) + assert(result === 4) + }) + + it('returns a negative number if the time value of the first date is smaller', function () { + const result = differenceInCalendarQuarters( + new Date(2011, 6 /* Jul */, 2, 6, 0), + new Date(2012, 6 /* Jul */, 2, 18, 0) + ) + assert(result === -4) + }) + + it('accepts timestamps', function () { + const result = differenceInCalendarQuarters( + new Date(2014, 9 /* Oct */, 2).getTime(), + new Date(2010, 6 /* Jul */, 2).getTime() + ) + assert(result === 17) + }) + + describe('edge cases', function () { + it('the difference is less than a quarter, but the given dates are in different calendar quarters', function () { + const result = differenceInCalendarQuarters( + new Date(2014, 6 /* Jul */, 1), + new Date(2014, 5 /* Jun */, 30) + ) + assert(result === 1) + }) + + it('the same for the swapped dates', function () { + const result = differenceInCalendarQuarters( + new Date(2014, 5 /* Jun */, 30), + new Date(2014, 6 /* Jul */, 1) + ) + assert(result === -1) + }) + + it('the days of months of the given dates are the same', function () { + const result = differenceInCalendarQuarters( + new Date(2014, 3 /* Apr */, 6), + new Date(2014, 0 /* Jan */, 6) + ) + assert(result === 1) + }) + + it('the given dates are the same', function () { + const result = differenceInCalendarQuarters( + new Date(2014, 8 /* Sep */, 5, 0, 0), + new Date(2014, 8 /* Sep */, 5, 0, 0) + ) + assert(result === 0) + }) + + it('does not return -0 when the given dates are the same', () => { + function isNegativeZero(x: number): boolean { + return x === 0 && 1 / x < 0 + } + + const result = differenceInCalendarQuarters( + new Date(2014, 8 /* Sep */, 5, 0, 0), + new Date(2014, 8 /* Sep */, 5, 0, 0) + ) + + const resultIsNegative = isNegativeZero(result) + assert(resultIsNegative === false) + }) + }) + + it('returns NaN if the first date is `Invalid Date`', function () { + const result = differenceInCalendarQuarters( + new Date(NaN), + new Date(2017, 0 /* Jan */, 1) + ) + assert(isNaN(result)) + }) + + it('returns NaN if the second date is `Invalid Date`', function () { + const result = differenceInCalendarQuarters( + new Date(2017, 0 /* Jan */, 1), + new Date(NaN) + ) + assert(isNaN(result)) + }) + + it('returns NaN if the both dates are `Invalid Date`', function () { + const result = differenceInCalendarQuarters(new Date(NaN), new Date(NaN)) + assert(isNaN(result)) + }) + + it('throws TypeError exception if passed less than 2 arguments', function () { + assert.throws(differenceInCalendarQuarters.bind(null), TypeError) + assert.throws(differenceInCalendarQuarters.bind(null, 1), TypeError) + }) +}) |