public void ReturnsInstance()
 {
     using (var textWriter = new StringWriter())
     using (var instance = new TextWriterNLogTarget(textWriter))
     {
         Assert.NotNull(instance);
     }
 }
 public void WritesMessage()
 {
     using (var textWriter = new StringWriter())
     using (var instance = new TextWriterNLogTarget(textWriter))
     {
         var logEventInfo = new LogEventInfo(LogLevel.Debug, "UNITTEST", "MESSAGE");
             var logEvent = new AsyncLogEventInfo(logEventInfo, exception => { });
             instance.WriteAsyncLogEvent(logEvent);
             instance.Flush(exception => { });
     }
 }