elpatron
bd1edd89f3
Centralize UI language switches in cycleAppLanguage and document the event in plausible-events.md. Co-authored-by: Cursor <cursoragent@cursor.com>
84 lines
2.3 KiB
TypeScript
84 lines
2.3 KiB
TypeScript
import type { i18n as I18nInstance } from 'i18next'
|
|
import { beforeEach, describe, expect, it, vi } from 'vitest'
|
|
import { PlausibleEvents } from '../services/analytics.js'
|
|
import {
|
|
changeAppLanguage,
|
|
cycleAppLanguage,
|
|
getNextLanguage,
|
|
normalizeAppLanguage,
|
|
SUPPORTED_LANGUAGES
|
|
} from './i18nLanguages.js'
|
|
|
|
const trackPlausibleEvent = vi.fn()
|
|
|
|
vi.mock('../services/analytics.js', async (importOriginal) => {
|
|
const actual = await importOriginal<typeof import('../services/analytics.js')>()
|
|
return {
|
|
...actual,
|
|
trackPlausibleEvent: (...args: unknown[]) => trackPlausibleEvent(...args)
|
|
}
|
|
})
|
|
|
|
function createMockI18n(language: string): I18nInstance {
|
|
let current = language
|
|
return {
|
|
language: current,
|
|
changeLanguage: vi.fn(async (lng: string) => {
|
|
current = lng
|
|
;(this as { language: string }).language = lng
|
|
})
|
|
} as unknown as I18nInstance
|
|
}
|
|
|
|
describe('i18nLanguages', () => {
|
|
beforeEach(() => {
|
|
trackPlausibleEvent.mockReset()
|
|
})
|
|
|
|
it('normalizes regional tags to supported base codes', () => {
|
|
expect(normalizeAppLanguage('de-DE')).toBe('de')
|
|
expect(normalizeAppLanguage('nb-NO')).toBe('nb')
|
|
expect(normalizeAppLanguage('xx')).toBe('en')
|
|
})
|
|
|
|
it('cycles through all supported languages', () => {
|
|
let current: string = 'de'
|
|
const seen = new Set<string>()
|
|
for (let i = 0; i < SUPPORTED_LANGUAGES.length; i++) {
|
|
seen.add(current)
|
|
current = getNextLanguage(current)
|
|
}
|
|
expect(seen.size).toBe(SUPPORTED_LANGUAGES.length)
|
|
expect(current).toBe('de')
|
|
})
|
|
|
|
it('tracks explicit language changes', () => {
|
|
const i18n = createMockI18n('de')
|
|
changeAppLanguage(i18n, 'sv')
|
|
|
|
expect(i18n.changeLanguage).toHaveBeenCalledWith('sv')
|
|
expect(trackPlausibleEvent).toHaveBeenCalledWith(PlausibleEvents.LANGUAGE_CHANGED, {
|
|
from: 'de',
|
|
to: 'sv'
|
|
})
|
|
})
|
|
|
|
it('does not track when language stays the same', () => {
|
|
const i18n = createMockI18n('en')
|
|
changeAppLanguage(i18n, 'en')
|
|
|
|
expect(i18n.changeLanguage).not.toHaveBeenCalled()
|
|
expect(trackPlausibleEvent).not.toHaveBeenCalled()
|
|
})
|
|
|
|
it('cycleAppLanguage tracks the next language', () => {
|
|
const i18n = createMockI18n('nb')
|
|
cycleAppLanguage(i18n)
|
|
|
|
expect(trackPlausibleEvent).toHaveBeenCalledWith(PlausibleEvents.LANGUAGE_CHANGED, {
|
|
from: 'nb',
|
|
to: 'de'
|
|
})
|
|
})
|
|
})
|