public void WriteLineIf1Test()
{
var listener = new TestTraceListener();
Trace.Listeners.Add(listener);
Trace.WriteLineIf(false, (Object)"Message");
Assert.Equal(0, listener.GetCallCount(Method.WriteLine));
Trace.WriteLineIf(true, (Object)"Message");
Assert.Equal(1, listener.GetCallCount(Method.WriteLine));
}