test(sonar): test i18n

Author: fernandatoledo

src/core/i18n/utils.test.ts

@@ -1,15 +1,51 @@
+import i18n from 'i18next';
+import { initReactI18next } from 'react-i18next';
+
+import ar from '../../translations/ar.json';
+import en from '../../translations/en.json';
 import { storage } from '../storage';
-import { getLanguage } from './utils';
+import type { TxKeyPath } from './utils';
+import { changeLanguage, getLanguage, translate } from './utils';
 
 jest.mock('../storage', () => ({
   storage: {
-    getString: jest.fn(),
+    getString: jest.fn().mockReturnValue('en'),
   },
 }));
 
+i18n.use(initReactI18next).init({
+  lng: 'en',
+  fallbackLng: 'en',
+
+  ns: ['translationsNS'],
+  defaultNS: 'translationsNS',
+
+  debug: true,
+
+  interpolation: {
+    escapeValue: false,
+  },
+
+  resources: { en: { translationsNS: en }, ar: { translationsNS: ar } },
+});
+
 describe('getLanguage', () => {
   it('should call storage.getString with LOCAL', () => {
-    getLanguage();
+    const lang = getLanguage();
     expect(storage.getString).toHaveBeenCalledWith('local');
+    expect(lang).toBe('en');
+  });
+});
+
+describe('translate', () => {
+  it('should return translated string', () => {
+    const key: TxKeyPath = 'onboarding.message';
+    let options = { lang: 'en' };
+    const translatedString = translate(key, options);
+    expect(translatedString).toBe('Welcome to rootstrap app site');
+    changeLanguage('ar');
+    options = { lang: 'ar' };
+    const translatedStringArab = translate(key, options);
+    expect(translatedStringArab).toBe('مرحبا بكم في موقع تطبيق rootstrap');
   });
 });