重构network库（mvp版本）搭建基础设施和核心接口

定义ITransport/ISerializer/INetworkMessage接口
NetworkIdentity组件
基础事件定义

packages/network-client/tests/setup.ts

@@ -1,27 +1,65 @@
+/**
+ * Jest测试环境设置 - 客户端
+ */
+
+// 导入reflect-metadata以支持装饰器
 import 'reflect-metadata';
 
-// Mock WebSocket for testing
-(global as any).WebSocket = class MockWebSocket {
-  onopen: ((event: Event) => void) | null = null;
-  onmessage: ((event: MessageEvent) => void) | null = null;
-  onclose: ((event: CloseEvent) => void) | null = null;
-  onerror: ((event: Event) => void) | null = null;
-  
-  constructor(public url: string) {}
-  
-  send(data: string | ArrayBuffer | Blob) {
-    // Mock implementation
-  }
-  
-  close() {
-    // Mock implementation
-  }
-};
+// 模拟浏览器环境的WebSocket
+Object.defineProperty(global, 'WebSocket', {
+  value: class MockWebSocket {
+    static CONNECTING = 0;
+    static OPEN = 1;
+    static CLOSING = 2;
+    static CLOSED = 3;
 
-global.beforeEach(() => {
-    jest.clearAllMocks();
+    readyState = MockWebSocket.CONNECTING;
+    url: string;
+    onopen: ((event: Event) => void) | null = null;
+    onclose: ((event: CloseEvent) => void) | null = null;
+    onmessage: ((event: MessageEvent) => void) | null = null;
+    onerror: ((event: Event) => void) | null = null;
+
+    constructor(url: string) {
+      this.url = url;
+      // 模拟异步连接
+      setTimeout(() => {
+        this.readyState = MockWebSocket.OPEN;
+        if (this.onopen) {
+          this.onopen(new Event('open'));
+        }
+      }, 0);
+    }
+
+    send(data: string | ArrayBuffer) {
+      // 模拟发送
+    }
+
+    close() {
+      this.readyState = MockWebSocket.CLOSED;
+      if (this.onclose) {
+        this.onclose(new CloseEvent('close'));
+      }
+    }
+  }
 });
 
-global.afterEach(() => {
-    jest.restoreAllMocks();
+// 全局测试配置
+beforeAll(() => {
+  // 设置测试环境
+  process.env.NODE_ENV = 'test';
+  process.env.NETWORK_ENV = 'client';
+});
+
+afterAll(() => {
+  // 清理测试环境
+});
+
+beforeEach(() => {
+  // 每个测试前的准备工作
+});
+
+afterEach(() => {
+  // 每个测试后的清理工作
+  // 清理可能的网络连接、定时器等
 });