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accounted/lib/articles/__tests__/currency-scope.test.ts
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79 lines
2.5 KiB
TypeScript

import { describe, expect, it } from 'vitest'
import {
ALL_CURRENCIES,
articleCurrency,
listArticleCurrencies,
matchesCurrencyScope,
resolveCurrencyScope,
} from '@/lib/articles/currency-scope'
describe('articleCurrency', () => {
it('normalizes the code', () => {
expect(articleCurrency({ currency: 'eur' })).toBe('EUR')
})
it('treats a missing or blank currency as SEK', () => {
expect(articleCurrency({})).toBe('SEK')
expect(articleCurrency({ currency: null })).toBe('SEK')
expect(articleCurrency({ currency: '' })).toBe('SEK')
})
})
describe('listArticleCurrencies', () => {
it('lists each present currency once, SEK first then alphabetically', () => {
expect(
listArticleCurrencies([
{ currency: 'USD' },
{ currency: 'EUR' },
{ currency: 'SEK' },
{ currency: 'EUR' },
{ currency: 'NOK' },
]),
).toEqual(['SEK', 'EUR', 'NOK', 'USD'])
})
it('folds legacy blank rows into SEK', () => {
expect(listArticleCurrencies([{ currency: null }, { currency: 'sek' }])).toEqual(['SEK'])
})
it('is empty for an empty register, so the picker can stay hidden', () => {
expect(listArticleCurrencies([])).toEqual([])
})
})
describe('resolveCurrencyScope', () => {
const available = ['SEK', 'EUR']
it('defaults to no scope', () => {
expect(resolveCurrencyScope(null, available)).toBe(ALL_CURRENCIES)
expect(resolveCurrencyScope(undefined, available)).toBe(ALL_CURRENCIES)
})
it('accepts a present currency, case-insensitively', () => {
expect(resolveCurrencyScope('eur', available)).toBe('EUR')
})
// A stale or hand-edited link must not empty the register: the fallback is
// "show everything", which the user can see and recover from.
it('falls back to no scope for a currency that is not in the register', () => {
expect(resolveCurrencyScope('USD', available)).toBe(ALL_CURRENCIES)
expect(resolveCurrencyScope('nonsense', available)).toBe(ALL_CURRENCIES)
expect(resolveCurrencyScope('EUR', [])).toBe(ALL_CURRENCIES)
})
})
describe('matchesCurrencyScope', () => {
it('keeps every article when unscoped', () => {
expect(matchesCurrencyScope({ currency: 'USD' }, ALL_CURRENCIES)).toBe(true)
})
it('keeps only the scoped currency', () => {
expect(matchesCurrencyScope({ currency: 'EUR' }, 'EUR')).toBe(true)
expect(matchesCurrencyScope({ currency: 'USD' }, 'EUR')).toBe(false)
})
it('matches legacy blank rows under SEK', () => {
expect(matchesCurrencyScope({ currency: null }, 'SEK')).toBe(true)
})
})