148 lines
4.2 KiB
JavaScript
148 lines
4.2 KiB
JavaScript
import { expect } from 'chai'
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import {
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areUnitConvertible,
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convertUnit,
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inferUnit,
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parseUnit,
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removeOnce,
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} from '../source/units'
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describe('Units', () => {
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it('should remove the first element encounter in the list', () => {
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let result = removeOnce(4)([1, 4, 6, 5, 4])
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expect(result).to.deep.equal([1, 6, 5, 4])
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})
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it('should parse string units into object', () => {
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expect(parseUnit('m')).to.deep.equal({
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numerators: ['m'],
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denominators: [],
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})
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expect(parseUnit('/an')).to.deep.equal({
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numerators: [],
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denominators: ['an'],
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})
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expect(parseUnit('m/s')).to.deep.equal({
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numerators: ['m'],
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denominators: ['s'],
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})
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expect(parseUnit('kg.m/s')).to.deep.equal({
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numerators: ['kg', 'm'],
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denominators: ['s'],
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})
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expect(parseUnit('kg.m/s')).to.deep.equal({
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numerators: ['kg', 'm'],
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denominators: ['s'],
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})
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expect(parseUnit('€/personne/mois')).to.deep.equal({
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numerators: ['€'],
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denominators: ['personne', 'mois'],
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})
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})
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it('should work with simple use case *', () => {
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let unit1 = { numerators: ['m'], denominators: ['s'] }
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let unit2 = { numerators: ['s'], denominators: [] }
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let unit = inferUnit('*', [unit1, unit2])
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expect(unit).to.deep.equal({
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numerators: ['m'],
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denominators: [],
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})
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})
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it('should work with simple use case / ', () => {
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let unit1 = { numerators: ['m'], denominators: ['s'] }
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let unit2 = { numerators: ['m'], denominators: [] }
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let unit = inferUnit('/', [unit1, unit2])
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expect(unit).to.deep.equal({
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numerators: [],
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denominators: ['s'],
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})
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})
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it('should work with advanced use case /', () => {
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let unit1 = { numerators: ['a', 'b', 'a', 'z'], denominators: ['c'] }
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let unit2 = { numerators: ['a', 'e', 'f'], denominators: ['z', 'c'] }
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let unit = inferUnit('/', [unit1, unit2])
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expect(unit).to.deep.equal({
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numerators: ['b', 'a', 'z', 'z'],
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denominators: ['e', 'f'],
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})
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})
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})
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describe('convertUnit', () => {
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it('should convert month to year in denominator', () => {
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expect(convertUnit(parseUnit('/mois'), parseUnit('/an'), 10)).to.eq(120)
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})
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it('should convert year to month in denominator', () => {
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expect(convertUnit(parseUnit('/an'), parseUnit('/mois'), 120)).to.eq(10)
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})
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it('should convert year to month in numerator', () => {
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expect(convertUnit(parseUnit('mois'), parseUnit('an'), 12)).to.eq(1)
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})
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it('should month to year in numerator', () => {
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expect(convertUnit(parseUnit('mois'), parseUnit('an'), 12)).to.eq(1)
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})
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it('should convert percentage to simple value', () => {
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expect(convertUnit(parseUnit('%'), parseUnit(''), 83)).to.closeTo(
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0.83,
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0.0000001
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)
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})
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it('should convert more difficult value', () => {
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expect(convertUnit(parseUnit('%/an'), parseUnit('/mois'), 12)).to.closeTo(
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0.01,
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0.0000001
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)
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})
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it('should convert year, month, day, k€', () => {
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expect(
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convertUnit(
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parseUnit('€/personne/jour'),
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parseUnit('k€/an/personne'),
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'100'
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)
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).to.closeTo(36.5, 0.0000001)
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})
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it('should handle simplification', () => {
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expect(
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convertUnit(parseUnit('€.an.%/mois'), parseUnit('€'), 100)
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).to.closeTo(12, 0.0000001)
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})
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it('should handle complexification', () => {
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expect(
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convertUnit(parseUnit('€'), parseUnit('€.an.%/mois'), 12)
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).to.closeTo(100, 0.0000001)
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})
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})
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describe('areUnitConvertible', () => {
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it('should be true for temporel unit', () => {
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expect(areUnitConvertible(parseUnit('mois'), parseUnit('an'))).to.eq(true)
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expect(areUnitConvertible(parseUnit('jours'), parseUnit('ans'))).to.eq(true)
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expect(areUnitConvertible(parseUnit('kg/an'), parseUnit('kg/mois'))).to.eq(
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true
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)
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})
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it('should be true for percentage', () => {
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expect(areUnitConvertible(parseUnit('%/mois'), parseUnit('/an'))).to.eq(
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true
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)
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})
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it('should be true for more complicated cases', () => {
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expect(
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areUnitConvertible(
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parseUnit('€/personne/mois'),
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parseUnit('€/an/personne')
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)
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).to.eq(true)
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})
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it('should be false for unit not alike', () => {
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expect(
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areUnitConvertible(parseUnit('mois'), parseUnit('€/an/personne'))
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).to.eq(false)
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expect(areUnitConvertible(parseUnit('m.m'), parseUnit('m'))).to.eq(false)
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expect(areUnitConvertible(parseUnit('m'), parseUnit('s'))).to.eq(false)
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})
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})
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