public void Enumerable_ShouldBe_FileNamesFrom_Directory()
{
// Arrange
const string folderPath = nameof(Enumerable_ShouldBe_FileNamesFrom_Directory);
var fileNames = new[] { "Log 1.txt", "Log 2.txt", "Log 3.txt" };
PrepareFiles(folderPath, fileNames);
var fileSource = new LogFileSource(folderPath, 5);
// Act
var result = fileSource.Select(Path.GetFileName).ToList();
// Assert
result.Should().Contain(fileNames);
}
public void Enumerable_ShouldTake_OnlyUnderSizeLimit()
{
// Arrange
const string folderPath = nameof(Enumerable_ShouldTake_OnlyUnderSizeLimit);
var fileNames = new[] { "Log 1.txt", "Log 2.txt", "tooBigFile.txt", "Log 3.txt" };
PrepareFiles(folderPath, fileNames);
File.WriteAllBytes(Path.Combine(folderPath, "tooBigFile.txt"), new byte[MaxFileSize + 1]);
var fileSource = new LogFileSource(MaxFileSize, folderPath, 4);
// Act
var result = fileSource.Select(Path.GetFileName).ToList();
// Assert
result.Contains("tooBigFile.txt").Should().BeFalse();
}
public void Enumerable_ShouldBe_OrderedBy_LastWriteTime()
{
// Arrange
const string folderPath = nameof(Enumerable_ShouldBe_OrderedBy_LastWriteTime);
var fileNames = new[] { "Log 1.txt", "Log 2.txt", "Log 3.txt" };
PrepareFiles(folderPath, fileNames);
File.SetLastWriteTimeUtc(Path.Combine(folderPath, "Log 1.txt"), new DateTime(2020, 05, 15, 0, 3, 3));
File.SetLastWriteTimeUtc(Path.Combine(folderPath, "Log 2.txt"), new DateTime(2020, 05, 15, 0, 1, 1));
File.SetLastWriteTimeUtc(Path.Combine(folderPath, "Log 3.txt"), new DateTime(2020, 05, 15, 0, 2, 2));
var fileSource = new LogFileSource(folderPath, 3);
// Act
var result = fileSource.Select(Path.GetFileName).ToList();
// Assert
result.Should().ContainInOrder("Log 1.txt", "Log 3.txt", "Log 2.txt");
}