feat(network): implement listing network requests (#247)

Fixes: https://github.com/microsoft/playwright-mcp/issues/242

tests/fixtures.ts

@@ -21,6 +21,7 @@ import { test as baseTest, expect as baseExpect } from '@playwright/test';
 import { StdioClientTransport } from '@modelcontextprotocol/sdk/client/stdio.js';
 import { Client } from '@modelcontextprotocol/sdk/client/index.js';
 import { spawn } from 'child_process';
+import { TestServer } from './testserver';
 
 type TestFixtures = {
   client: Client;
@@ -28,11 +29,14 @@ type TestFixtures = {
   startClient: (options?: { args?: string[] }) => Promise<Client>;
   wsEndpoint: string;
   cdpEndpoint: string;
+  server: TestServer;
+  httpsServer: TestServer;
 };
 
 type WorkerFixtures = {
   mcpHeadless: boolean;
   mcpBrowser: string | undefined;
+  _workerServers: { server: TestServer, httpsServer: TestServer };
 };
 
 export const test = baseTest.extend<TestFixtures, WorkerFixtures>({
@@ -103,7 +107,32 @@ export const test = baseTest.extend<TestFixtures, WorkerFixtures>({
     await use(headless);
   }, { scope: 'worker' }],
 
-  mcpBrowser: ['chromium', { option: true, scope: 'worker' }],
+  mcpBrowser: ['chrome', { option: true, scope: 'worker' }],
+
+  _workerServers: [async ({}, use, workerInfo) => {
+    const port = 8907 + workerInfo.workerIndex * 4;
+    const server = await TestServer.create(port);
+
+    const httpsPort = port + 1;
+    const httpsServer = await TestServer.createHTTPS(httpsPort);
+
+    await use({ server, httpsServer });
+
+    await Promise.all([
+      server.stop(),
+      httpsServer.stop(),
+    ]);
+  }, { scope: 'worker' }],
+
+  server: async ({ _workerServers }, use) => {
+    _workerServers.server.reset();
+    await use(_workerServers.server);
+  },
+
+  httpsServer: async ({ _workerServers }, use) => {
+    _workerServers.httpsServer.reset();
+    await use(_workerServers.httpsServer);
+  },
 });
 
 type Response = Awaited<ReturnType<Client['callTool']>>;