Move service library test into observatory package.

runtime/bin/vmservice/client/test/test_helper.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 test_helper;
+
+import 'dart:async';
+import 'dart:convert';
+import 'dart:io';
+
+class TestLauncher {
+  final String script;
+  Process process;
+
+  TestLauncher(this.script);
+
+  String get scriptPath {
+    var dartScript = Platform.script.toFilePath();
+    var splitPoint = dartScript.lastIndexOf(Platform.pathSeparator);
+    var scriptDirectory = dartScript.substring(0, splitPoint);
+    return scriptDirectory + Platform.pathSeparator + script;
+  }
+
+  Future<int> launch() {
+    String dartExecutable = Platform.executable;
+    print('** Launching $scriptPath');
+    return Process.start(dartExecutable,
+                         ['--enable-vm-service:0', scriptPath]).then((p) {
+
+      Completer completer = new Completer();
+      process = p;
+      var portNumber;
+      var blank;
+      var first = true;
+      process.stdout.transform(UTF8.decoder)
+                    .transform(new LineSplitter()).listen((line) {
+        if (line.startsWith('Observatory listening on http://')) {
+          RegExp portExp = new RegExp(r"\d+.\d+.\d+.\d+:(\d+)");
+          var port = portExp.firstMatch(line).group(1);
+          portNumber = int.parse(port);
+        }
+        if (line == '') {
+          // Received blank line.
+          blank = true;
+        }
+        if (portNumber != null && blank == true && first == true) {
+          completer.complete(portNumber);
+          // Stop repeat completions.
+          first = false;
+          print('** Signaled to run test queries on $portNumber');
+        }
+        print(line);
+      });
+      process.stderr.transform(UTF8.decoder)
+                    .transform(new LineSplitter()).listen((line) {
+        print(line);
+      });
+      process.exitCode.then((code) {
+        //Expect.equals(0, code, 'Launched dart executable exited with error.');
+      });
+      return completer.future;
+    });
+  }
+
+  void requestExit() {
+    print('** Requesting script to exit.');
+    process.stdin.add([32, 13, 10]);
+  }
+}
+