public void AggregateLogs_PastThreeDays_ReturnsAllLinesFromPastThreeDays()
{
using (ShimsContext.Create())
{
// Arrange
ShimDirectory.GetFilesStringString = (dir, pattern) =>
{
return new[]
{
@"C:\someLogDir\Log_20121001.log",
@"C:\someLogDir\Log_20121002.log",
@"C:\someLogDir\Log_20121005.log"
};
};
ShimFile.ReadAllLinesString = path =>
{
switch (path)
{
case @"C:\someLogDir\Log_20121001.log":
return new[] { "OctFirstLine1", "OctFirstLine2" };
case @"C:\someLogDir\Log_20121002.log":
return new[] { "ThreeDaysAgoFirstLine", "OctSecondLine2" };
case @"C:\someLogDir\Log_20121005.log":
return new[] { "OctFifthLine1", "TodayLastLine" };
}
return new string[] { };
};
ShimDateTime.TodayGet = () =>
{
return new DateTime(2012, 10, 05);
};
// Act
var sut = new LogAggregator();
var result = sut.AggregateLogs(@"C:\SomeLogDir", daysInPast: 3);
// Assert
Assert.AreEqual(4, result.Length, "Number of aggregated lines incorrect.");
CollectionAssert.Contains(result, "ThreeDaysAgoFirstLine", "Expected line missing from aggregated log.");
CollectionAssert.Contains(result, "TodayLastLine", "Expected line missing from aggregated log.");
}
}
public void AggregateLogs_InvalidFileName_ThrowsException()
{
using (ShimsContext.Create())
{
// Arrange
ShimDirectory.GetFilesStringString = (dir, pattern) => new[]
{
@"C:\someLogDir\Log_20121001.log",
@"C:\someLogDir\Log_20121002.log",
@"C:\someLogDir\Log_2015-11-09.log"
};
ShimFile.ReadAllLinesString = path =>
{
switch (path)
{
case @"C:\someLogDir\Log_20121001.log":
return new[] { "OctFirstLine1", "OctFirstLine2" };
case @"C:\someLogDir\Log_20121002.log":
return new[] { "ThreeDaysAgoFirstLine", "OctSecondLine2" };
case @"C:\someLogDir\Log_Log_2015-11-09.log":
return new[] { "OctFifthLine1", "TodayLastLine" };
}
return new string[] { };
};
ShimDateTime.TodayGet = () => new DateTime(2012, 10, 05);
// Act
var sut = new LogAggregator();
var result = sut.AggregateLogs(@"C:\SomeLogDir", daysInPast: 3);
// Assert expected LogFileException
}
}