System.Diagnostics.TraceSourceTests.TraceSourceClassTests.CloseTest C# (CSharp) Method

        public void CloseTest()
        {
            var trace = new TraceSource("T1", SourceLevels.All);
            trace.Listeners.Clear();

            var listener = new TestTraceListener();
            trace.Listeners.Add(listener);
            trace.Close();
            // NOTE: this assertion fails on .net 4.5
            // where TraceSource.Close calls TraceListener.Close, not Dispose.
            Assert.Equal(1, listener.GetCallCount(Method.Dispose));
            // Assert that writing to a closed TraceSource is not an error.
            trace.TraceEvent(TraceEventType.Critical, 0);
        }