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Paweł Kuna
112 lines
3.3 KiB
TypeScript
112 lines
3.3 KiB
TypeScript
import { describe, expect, it } from 'vitest'
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import { capitalize, firstLetters, formatNumber, millisecondsToMinutes, parseCurrency, parsePercentage, pathSlug, roundTo, slugifyWord, sortBy, splitDropTrailingEmpty, ucFirst } from './string-format'
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describe('capitalize', () => {
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it('uppercases the first char and lowercases the rest', () => {
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expect(capitalize('DISABLED')).toBe('Disabled')
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expect(capitalize('checkbox input')).toBe('Checkbox input')
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})
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})
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describe('ucFirst', () => {
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it('uppercases only the first char, leaving the rest untouched', () => {
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expect(ucFirst('default')).toBe('Default')
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expect(ucFirst('dark')).toBe('Dark')
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})
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})
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describe('firstLetters', () => {
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it('takes the first letter of every word', () => {
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expect(firstLetters('Paweł Kuna')).toBe('PK')
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})
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it('handles undefined/empty input', () => {
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expect(firstLetters('')).toBe('')
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expect(firstLetters(undefined as unknown as string)).toBe('')
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})
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})
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describe('formatNumber', () => {
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it('adds thousands separators', () => {
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expect(formatNumber(1234567)).toBe('1,234,567')
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expect(formatNumber(42)).toBe('42')
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})
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})
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describe('splitDropTrailingEmpty', () => {
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it('drops trailing empty strings', () => {
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expect(splitDropTrailingEmpty('Tabler,Pages,', ',')).toEqual(['Tabler', 'Pages'])
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})
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it('keeps internal empty segments', () => {
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expect(splitDropTrailingEmpty('a,,b', ',')).toEqual(['a', '', 'b'])
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})
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})
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describe('slugifyWord', () => {
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it('lowercases the input', () => {
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expect(slugifyWord('Settings')).toBe('settings')
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})
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})
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describe('pathSlug', () => {
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it('strips slashes and joins segments', () => {
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expect(pathSlug('/ui/getting-started/')).toBe('uigetting-started')
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})
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})
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describe('parsePercentage', () => {
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it('strips a trailing "%"', () => {
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expect(parsePercentage('42%')).toBe('42')
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})
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it('defaults to "0" when empty or undefined', () => {
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expect(parsePercentage(undefined)).toBe('0')
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expect(parsePercentage('')).toBe('0')
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})
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it('passes through numeric input', () => {
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expect(parsePercentage(75)).toBe('75')
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})
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})
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describe('millisecondsToMinutes', () => {
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it('formats sub-minute durations', () => {
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expect(millisecondsToMinutes(45000)).toBe('0:45')
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})
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it('pads seconds under 10', () => {
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expect(millisecondsToMinutes(65000)).toBe('1:05')
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})
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it('formats multi-minute durations', () => {
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expect(millisecondsToMinutes(225000)).toBe('3:45')
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})
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})
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describe('parseCurrency', () => {
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it('strips "$" and "," before parsing', () => {
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expect(parseCurrency('$23,077.05')).toBeCloseTo(23077.05)
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})
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})
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describe('roundTo', () => {
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it('rounds to the given number of digits, dropping trailing zeros', () => {
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expect(roundTo(1 / 3, 4)).toBe(0.3333)
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expect(roundTo(2, 8)).toBe(2)
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})
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})
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describe('sortBy', () => {
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it('sorts by the given key using case-sensitive string comparison', () => {
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const people = [{ last_name: 'Smith' }, { last_name: 'Adams' }, { last_name: 'jones' }]
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expect(sortBy(people, (p) => p.last_name).map((p) => p.last_name)).toEqual(['Adams', 'Smith', 'jones'])
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})
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it('does not mutate the input array', () => {
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const people = [{ last_name: 'Smith' }, { last_name: 'Adams' }]
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sortBy(people, (p) => p.last_name)
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expect(people[0].last_name).toBe('Smith')
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})
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})
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