MyService.Stop C# (CSharp) Method

    public Stop()
    {
        _headChannel.Writer.TryComplete();
    }
...

 public void Test2()
 {
     MockMiscProvider.SleepMilliSecends = 0;
     MockMiscProvider.MockSystemRunningMillisecends = CoreSettings.MinStartTicks + 1;
     var svc = new MyService();
     svc.Start();
     while (!svc.RunningTask)
     {
         Thread.Sleep(100);
     }
     svc.Stop();
     Assert.AreEqual(0, MockMiscProvider.SleepMilliSecends);
 }