public void LogsExit()
 {
     Log4NetTracingInterceptor logger = new Log4NetTracingInterceptor("app.config");
     string invocationId = "12345";
     string returnValue = "bye bye!";
     string expected = string.Format("DEBUG - Exit with invocation id {0}, the return value is {1}\r\n",
         invocationId, returnValue);
     logger.ExitMethod(invocationId, returnValue);
     string actual = File.ReadAllText(logFileName);
     Assert.Equal(expected, actual);
 }
 public void LogsNullExit()
 {
     Log4NetTracingInterceptor logger = new Log4NetTracingInterceptor("Microsoft.Rest.ClientRuntime.Tracing.Tests.dll.config");
     string invocationId = null;
     string returnValue = null;
     string expected = string.Format("DEBUG - Exit with invocation id {0}, the return value is {1}\r\n",
         invocationId, returnValue);
     logger.ExitMethod(invocationId, returnValue);
     string actual = File.ReadAllText(logFileName);
     Assert.Equal(expected, actual);
 }