Question

I want to omit Debug.Write/WriteLine messages from ReSharper’s test runner output. Is it doable?

Answer 1

while (Debug.Listeners.Count > 0) Debug.Listeners.RemoveAt(0);

or more targeted (for NUnit test framework):

var nunitListener = Debug.Listeners.Cast<TraceListener>().Where(tl => tl.Name == "NUnit").FirstOrDefault();
if (nunitListener != null) Debug.Listeners.Remove(nunitListener);

Notice that though ReSharper adds its own trace listener, it is NUnit’s trace listener that Test Runner shows in the output. I do not know why, but removing “NUnit” trace listener does the trick.