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100 lines
2.7 KiB
100 lines
2.7 KiB
/**
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* i18n.ts 国际化模块单元测试
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*/
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import { describe, it, expect, beforeEach } from 'vitest';
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import { t, setLocale, getLocale } from '../src/i18n';
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describe('setLocale / getLocale', () => {
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beforeEach(() => {
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setLocale('zh-CN');
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});
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it('默认语言为 zh-CN', () => {
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expect(getLocale()).toBe('zh-CN');
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});
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it('切换为英文', () => {
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setLocale('en');
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expect(getLocale()).toBe('en');
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});
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it('匹配语言前缀（zh → zh-CN）', () => {
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setLocale('zh');
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expect(getLocale()).toBe('zh-CN');
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});
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it('未知语言保持默认 zh-CN', () => {
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setLocale('fr');
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expect(getLocale()).toBe('zh-CN');
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});
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});
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describe('t()', () => {
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beforeEach(() => {
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setLocale('zh-CN');
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});
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it('返回中文翻译', () => {
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expect(t('send')).toBe('发送');
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expect(t('close')).toBe('关闭');
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});
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it('切换英文后返回英文翻译', () => {
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setLocale('en');
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expect(t('send')).toBe('Send');
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expect(t('close')).toBe('Close');
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});
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it('未知 key 返回 key 本身', () => {
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expect(t('nonexistent_key')).toBe('nonexistent_key');
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});
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it('支持插值参数替换', () => {
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setLocale('zh-CN');
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expect(t('source_count', { n: 3 })).toBe('3 条参考来源');
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});
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it('英文插值参数替换', () => {
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setLocale('en');
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expect(t('source_count', { n: 5 })).toBe('5 source(s)');
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});
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it('中英文字典 key 数量一致', () => {
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// 验证中英文字典完整性：所有中文 key 在英文中都有对应
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setLocale('zh-CN');
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const zhKeys = Object.keys(getAllKeys('zh-CN'));
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setLocale('en');
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const enKeys = Object.keys(getAllKeys('en'));
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// 每个中文 key 在英文字典中也应存在
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for (const key of zhKeys) {
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setLocale('en');
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const translated = t(key);
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expect(translated).not.toBe(key); // 不应回退到 key 本身
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}
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});
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});
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/** 辅助函数：获取指定语言的所有 key（通过遍历测试已知 key） */
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function getAllKeys(_locale: string): Record<string, string> {
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const knownKeys = [
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'title', 'minimize', 'close', 'status_online',
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'welcome_title', 'welcome_desc',
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'placeholder', 'send', 'stop', 'new_message',
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'copy', 'copied', 'retry',
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'loading', 'stream_interrupted',
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'category_all', 'source_count',
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'clear', 'clear_confirm',
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'history_title', 'history_empty', 'history_search',
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'feedback_up', 'feedback_down',
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'teaser_text', 'new_msg_announce',
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'error_network', 'error_timeout', 'error_send',
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'history_group_today', 'history_group_yesterday',
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'history_group_week', 'history_group_earlier',
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];
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const result: Record<string, string> = {};
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for (const key of knownKeys) {
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result[key] = t(key);
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}
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return result;
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}
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