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Add current language utility unit test #106

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jakob.scheid merged 17 commits from testing/current-language-util into main 2026-06-04 12:41:55 +02:00
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src/utils/__tests__/currentLanguage.test.js
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@@ -18,30 +18,30 @@ import { expect, test } from 'vitest';
import getCurrentLanguage from '../currentLanguage'; import getCurrentLanguage from '../currentLanguage';
const locales = [ const locales = [
{ navigatorLanguage: 'en', expected: 'en'}, { navigatorLanguage: 'en', localStorageLanguage: null, expected: 'en'},
{ navigatorLanguage: 'de', expected: 'de'}, { navigatorLanguage: 'de', localStorageLanguage: null, expected: 'de'},
{ navigatorLanguage: 'fr', expected: 'fr'}, { navigatorLanguage: 'fr', localStorageLanguage: null, expected: 'fr'},
{ navigatorLanguage: 'en-US', expected: 'en'}, { navigatorLanguage: 'en-US', localStorageLanguage: null, expected: 'en'},
{ navigatorLanguage: 'en-AU', expected: 'en'}, { navigatorLanguage: 'en-AU', localStorageLanguage: null, expected: 'en'},
{ navigatorLanguage: 'de-DE', expected: 'de'}, { navigatorLanguage: 'de-DE', localStorageLanguage: null, expected: 'de'},
{ navigatorLanguage: 'fr-FR', expected: 'fr'}, { navigatorLanguage: 'fr-FR', localStorageLanguage: null, expected: 'fr'},
{ navigatorLanguage: 'en-us', expected: 'en'}, { navigatorLanguage: 'en-us', localStorageLanguage: null, expected: 'en'},
{ navigatorLanguage: 'en-au', expected: 'en'}, { navigatorLanguage: 'en-au', localStorageLanguage: null, expected: 'en'},
{ navigatorLanguage: 'de-de', expected: 'de'}, { navigatorLanguage: 'de-de', localStorageLanguage: null, expected: 'de'},
{ navigatorLanguage: 'fr-fr', expected: 'fr'}, { navigatorLanguage: 'fr-fr', localStorageLanguage: null, expected: 'fr'},
{ navigatorLanguage: 'zh-Hans-CN', expected: 'zh'}, { navigatorLanguage: 'zh-Hans-CN', localStorageLanguage: null, expected: 'zh'},
{ navigatorLanguage: 'zh-Hant-TW', expected: 'zh'}, { navigatorLanguage: 'zh-Hant-TW', localStorageLanguage: null, expected: 'zh'},
{ navigatorLanguage: 'uz-Latn-UZ', expected: 'uz'}, { navigatorLanguage: 'uz-Latn-UZ', localStorageLanguage: null, expected: 'uz'},
{ navigatorLanguage: 'en-US-u-ca-gregory', expected: 'en'}, { navigatorLanguage: 'en-US-u-ca-gregory', localStorageLanguage: null, expected: 'en'},
{ navigatorLanguage: 'de-DE-u-co-phonebk', expected: 'de'}, { navigatorLanguage: 'de-DE-u-co-phonebk', localStorageLanguage: null, expected: 'de'},
{ navigatorLanguage: 'zh-Hant-TW-u-co-phonebk', expected: 'zh'} { navigatorLanguage: 'zh-Hant-TW-u-co-phonebk', localStorageLanguage: null, expected: 'zh'}
]; ];
test.for(locales)('returns the language $expected for navigator language $navigatorLanguage', ({ navigatorLanguage, expected }) => { test.for(locales)('returns the language $expected for navigator language $navigatorLanguage and local storage language $localStorageLanguage', ({ navigatorLanguage, localStorageLanguage, expected }) => {
Object.defineProperty(navigator, 'language', { Object.defineProperty(navigator, 'language', {
value: navigatorLanguage, value: navigatorLanguage,
configurable: true configurable: true