First unit test using service lib.

tests/standalone/vmservice/allocations_script.dart

Index: tests/standalone/vmservice/allocations_script.dart
===================================================================
--- tests/standalone/vmservice/allocations_script.dart	(revision 0)
+++ tests/standalone/vmservice/allocations_script.dart	(revision 0)
@@ -0,0 +1,19 @@
+// Copyright (c) 2014, 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 allocations_script;
+
+import 'dart:io';
+
+class Foo {
+}
+List<Foo> foos;
+
+main() {
+  foos = [new Foo(), new Foo(), new Foo()];
+
+  print(''); // Print blank line to signal that we are ready.
+  // Wait until signaled from spawning test.
+  stdin.first.then((_) => exit(0));
+}