public void TracingEventListenerDoesNotDeadlock()
{
QueuingEventListener upstreamListener = new QueuingEventListener();
EventQueue upstreamListenerQueue = upstreamListener.Events;
// Install a TraceListener sending TestOutput events to the upstreamListener.
// This simulates RemoteTestRunner.StartTextCapture, where TestContext installs such a TraceListener.
TextWriter traceWriter = new EventListenerTextWriter(upstreamListener, TestOutputType.Trace);
const string TraceListenerName = "TracingEventListenerDoesNotDeadlock";
TraceListener feedingTraceToUpstreamListener = new TextWriterTraceListener(traceWriter, TraceListenerName);
try
{
Trace.Listeners.Add(feedingTraceToUpstreamListener);
// downstreamListenerToTrace simulates an EventListener installed e.g. by an Addin,
// which may call Trace within the EventListener methods:
TracingEventListener downstreamListenerToTrace = new TracingEventListener();
using (EventPump pump = new EventPump(downstreamListenerToTrace, upstreamListenerQueue))
{
pump.Name = "TracingEventListenerDoesNotDeadlock";
pump.Start();
const int Repetitions = 10;
for (int i = 0; i < Repetitions; i++)
{
foreach (Event e in events)
{
Trace.WriteLine("Before sending {0} event.", e.GetType().Name);
e.Send(upstreamListener);
Trace.WriteLine("After sending {0} event.", e.GetType().Name);
}
}
}
}
finally
{
Trace.Listeners.Remove(TraceListenerName);
feedingTraceToUpstreamListener.Dispose();
}
}
public void TracingEventListenerDoesNotDeadlock()
{
QueuingEventListener upstreamListener = new QueuingEventListener();
EventQueue upstreamListenerQueue = upstreamListener.Events;
// Install a TraceListener sending TestOutput events to the upstreamListener.
// This simulates RemoteTestRunner.StartTextCapture, where TestContext installs such a TraceListener.
TextWriter traceWriter = new EventListenerTextWriter(upstreamListener, TestOutputType.Trace);
const string TraceListenerName = "TracingEventListenerDoesNotDeadlock";
TraceListener feedingTraceToUpstreamListener = new TextWriterTraceListener(traceWriter, TraceListenerName);
try
{
Trace.Listeners.Add(feedingTraceToUpstreamListener);
// downstreamListenerToTrace simulates an EventListener installed e.g. by an Addin,
// which may call Trace within the EventListener methods:
TracingEventListener downstreamListenerToTrace = new TracingEventListener();
using (EventPump pump = new EventPump(downstreamListenerToTrace, upstreamListenerQueue))
{
pump.Name = "TracingEventListenerDoesNotDeadlock";
pump.Start();
const int Repetitions = 10;
for (int i = 0; i < Repetitions; i++)
{
foreach (Event e in events)
{
Trace.WriteLine("Before sending {0} event.", e.GetType().Name);
e.Send(upstreamListener);
Trace.WriteLine("After sending {0} event.", e.GetType().Name);
}
}
}
}
finally
{
Trace.Listeners.Remove(TraceListenerName);
feedingTraceToUpstreamListener.Dispose();
}
}