public void Cleans_Before_Appending()
{
var logEvent = new LoggingEvent(new LoggingEventData());
Mock <ISelfCleaningRollingFileAppender>().Setup(x => x.AppendBase(It.IsAny <LoggingEvent>()))
.Callback(() => Mock <ILogCleaner>().Verify(x => x.TryCleanup(), Times.Once));
TestObject.Append(logEvent);
Mock <ISelfCleaningRollingFileAppender>().Verify(x => x.AppendBase(logEvent));
Mock <ISelfCleaningRollingFileAppender>().Verify(x => x.AppendBase(It.IsAny <LoggingEvent>()), Times.Once);
Mock <ILogCleaner>().Verify(x => x.TryCleanup(), Times.Once);
}