public void Cleanup()
 {
     base.TestCleanup();
     _logicalContext = null;
     _logicalScheduler.Dispose();
     _physicalScheduler.Dispose();
 }
 public void Initialize()
 {
     base.TestInitialize();
     _physicalScheduler = PhysicalScheduler.Create();
     _logicalScheduler  = new LogicalScheduler(_physicalScheduler);
     _logicalContext    = new MockOperatorContext {
         Scheduler = _logicalScheduler
     };
 }