feat: add VS Code IDE bridge extension

packages/vscode-ide-bridge/test/serverWebSocketTransport.test.ts

@@ -0,0 +1,71 @@
+import { EventEmitter } from 'node:events'
+import { describe, expect, test } from 'bun:test'
+import { ServerWebSocketTransport } from '../src/server/serverWebSocketTransport.js'
+
+class FakeWebSocket extends EventEmitter {
+  readyState = 1
+  sent: string[] = []
+  closed = false
+
+  send(data: string, callback?: (error?: Error) => void) {
+    this.sent.push(data)
+    callback?.()
+  }
+
+  close() {
+    this.closed = true
+    this.emit('close')
+  }
+}
+
+describe('server web socket transport', () => {
+  test('forwards incoming JSON-RPC messages to the MCP server', async () => {
+    const socket = new FakeWebSocket()
+    const transport = new ServerWebSocketTransport(socket)
+    const messages: unknown[] = []
+
+    transport.onmessage = message => {
+      messages.push(message)
+    }
+
+    await transport.start()
+    socket.emit(
+      'message',
+      Buffer.from(
+        JSON.stringify({
+          jsonrpc: '2.0',
+          id: 1,
+          method: 'ping',
+          params: {},
+        }),
+      ),
+    )
+
+    expect(messages).toHaveLength(1)
+    expect(messages[0]).toEqual({
+      jsonrpc: '2.0',
+      id: 1,
+      method: 'ping',
+      params: {},
+    })
+  })
+
+  test('serializes outgoing JSON-RPC messages back to the websocket', async () => {
+    const socket = new FakeWebSocket()
+    const transport = new ServerWebSocketTransport(socket)
+
+    await transport.start()
+    await transport.send({
+      jsonrpc: '2.0',
+      id: 2,
+      result: {},
+    })
+
+    expect(socket.sent).toHaveLength(1)
+    expect(JSON.parse(socket.sent[0] ?? 'null')).toEqual({
+      jsonrpc: '2.0',
+      id: 2,
+      result: {},
+    })
+  })
+})