WebSocket client for VM service

tests/standalone/vmservice/websocket_client_test.dart

+// Copyright (c) 2013, the Dart project authors.  Please see the AUTHORS file
+// for details. All rights reserved. Use of this source code is governed by a
+// BSD-style license that can be found in the LICENSE file.
+
+library unknown_command_test;
+
+import 'test_helper.dart';
+import 'package:expect/expect.dart';
+
+class ClientsRequestTest extends ServiceWebSocketRequestHelper {
+  ClientsRequestTest(port) : super('ws://127.0.0.1:$port/ws');
+  int _count = 0;
+
+  onResponse(var seq, Map response) {
+    if (seq == 'cli') {
+      // Verify response is correct for 'cli' sequence id.
+      Expect.equals('ClientList', response['type']);
+      Expect.equals(1, response['members'].length);
+      _count++;
+    } else if (seq == 'iso') {
+      // Verify response is correct for 'iso' sequence id.
+      Expect.equals('IsolateList', response['type']);
+      _count++;
+    }
+    if (_count == 2) {
+      // After receiving both responses, the test is complete.
+      complete();
+    }
+  }
+
+  runTest() {
+    // Send a request for clients with 'cli' sequence id.
+    sendMessage('cli', ['clients']);
+    // Send a request for isolates with 'iso' sequence id.
+    sendMessage('iso', ['isolates']);
+  }
+}
+
+main() {
+  var process = new TestLauncher('unknown_command_script.dart');
+  process.launch().then((port) {
+    new ClientsRequestTest(port).connect().then((test) {
+      test.completed.then((_) {
+        process.requestExit();
+      });
+      test.runTest();
+    });
+  });
+}