diff --git a/jest.setup.ts b/jest.setup.ts
new file mode 100644
index 0000000..fec659a
--- /dev/null
+++ b/jest.setup.ts
@@ -0,0 +1,34 @@
+// jest.setup.js
+
+// 引入 jest-dom 断言库，使得 expect 可以使用更多 DOM 相关断言
+import {jest} from '@jest/globals';
+import '@testing-library/jest-dom';
+import { TextEncoder, TextDecoder } from 'util';
+
+global.TextEncoder = TextEncoder as typeof global.TextEncoder;
+global.TextDecoder = TextDecoder as typeof global.TextDecoder;
+
+// 强制覆盖 window.alert
+window.alert = jest.fn(() => {}); // 增加空函数实现
+
+// 保留原始 console.error 的 mock
+const originalConsoleError = console.error;
+console.error = jest.fn((...args) => {
+  originalConsoleError(...args);
+});
+
+// 每次测试前重置 mock 状态
+beforeEach(() => {
+  jest.clearAllMocks();
+});
+
+// 如果需要模拟一些全局对象，可以在这里进行
+global.localStorage = {
+  getItem: jest.fn(),
+  setItem: jest.fn(),
+  removeItem: jest.fn(),
+  clear: jest.fn(),
+  key: jest.fn(),
+  length: 0,
+};
+