public void TestOldFilesAreCleanedUp()
{
const string newDirName = "CleanUpLogDir";
if (Directory.Exists(newDirName))
{
Directory.Delete(newDirName, true);
}
Directory.CreateDirectory(newDirName);
AssertDirectory.Exists(newDirName);
var retentionPeriod = new TimeSpan(7, 0, 0, 0);
var loggerDate = DateTime.Now;
var firstOldFile = string.Format("{0}-0.log.txt", loggerDate.ToString("yyyy-MM-dd HH-mm"));
var firstOldFilePath = Path.Combine(newDirName, firstOldFile);
var fileStream = File.Create(firstOldFilePath);
fileStream.Close();
var fileInfo = new FileInfo(firstOldFilePath);
fileInfo.LastWriteTime = loggerDate.Subtract(retentionPeriod).Subtract(new TimeSpan(0, 0, 0, 1)); // one second older than cutoff
var secondOldFile = string.Format("{0}-1.log.txt", loggerDate.ToString("yyyy-MM-dd HH-mm"));
var secondOldFilePath = Path.Combine(newDirName, secondOldFile);
fileStream = File.Create(secondOldFilePath);
fileStream.Close();
fileInfo = new FileInfo(secondOldFilePath);
fileInfo.LastWriteTime = loggerDate.Subtract(retentionPeriod).Add(new TimeSpan(0, 0, 0, 1)); // one second newer than cutoff
var fileLogger = new FileLogger("testLogger", newDirName);
fileLogger.TimeProvider = new FixedTimeProvider(loggerDate);
fileLogger.RetentionPeriod = retentionPeriod;
fileLogger.Open();
fileLogger.Dispose();
// Check the first one is gone and the second one is still there
AssertFile.DoesNotExist(firstOldFilePath);
AssertFile.Exists(secondOldFilePath);
}