Centralized event streams

runtime/observatory/tests/observatory_ui/mocks/repositories/script.dart

 // Copyright (c) 2016, 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.
 
 part of mocks;
 
 class ScriptRepositoryMock implements M.ScriptRepository {
   final Map<String, M.Script> scripts;
 
   bool _invoked = false;
   bool get invoked => _invoked;
 
   ScriptRepositoryMock(this.scripts);
 
   Future<M.Script> get(String id) async {
     _invoked = true;
     return scripts[id];
   }
 }