import { Lang } from '../../types/interface';
import { chineseTranslations, englishTranslations, spanishTranslations } from '../translation';
import { I18NMap, i18n, install } from '../i18n';

describe('i18n', () => {
	describe('Chinese', () => {
		beforeEach(() => {
			I18NMap.clear();
			install(Lang.English, englishTranslations, I18NMap);
			install(Lang.Chinese, chineseTranslations, I18NMap);
		});
  
		it('should return fallback when key is not found', () => {
			expect(i18n('nonexistent_key', Lang.Chinese)).toEqual('nonexistent_key');
		});
  
  
		it('should return fallback when value is not found', () => {
			const map = new Map<Lang, string>();
			I18NMap.set('no_value', map);
			expect(i18n('no_value', Lang.Chinese)).toEqual('no_value');
		});
  
		it('should return value when key is found', () => {
			expect(i18n('ui_apikey_label', Lang.Chinese)).toEqual('API 密钥：');
		});
	});

	describe('Spain', () => {
		beforeEach(() => {
			I18NMap.clear();
			install(Lang.Spain, spanishTranslations, I18NMap);
		});

		it('should return key when lang is wrong', () => {
			expect(i18n('ui_apikey_label', Lang.Chinese)).toEqual('ui_apikey_label');
		});

		it('should return value when key is found', () => {
			expect(i18n('ui_apikey_label', Lang.Spain)).toEqual('Clave API:');
		});
	});
});