private void File_EnumerateAlternateDataStreams(bool isNetwork)
{
UnitTestConstants.PrintUnitTestHeader(isNetwork);
var tempPath = Path.GetTempPath("File-EnumerateAlternateDataStreams-" + Path.GetRandomFileName());
if (isNetwork)
{
tempPath = Path.LocalToUnc(tempPath);
}
const int defaultStreamsFile = 1; // The default number of data streams for a file.
Console.WriteLine("\nInput File Path: [{0}]", tempPath);
Console.WriteLine("\nA file is created and {0} streams are added.", UnitTestConstants.AllStreams.Count());
try
{
// Create file and add 10 characters to it, file is created in ANSI format.
File.WriteAllText(tempPath, UnitTestConstants.TenNumbers);
var fi = new FileInfo(tempPath);
var currentNumberofStreams = fi.EnumerateAlternateDataStreams().Count();
Assert.AreEqual(defaultStreamsFile, currentNumberofStreams, "Total amount of default streams do not match.");
Assert.AreEqual(currentNumberofStreams, File.EnumerateAlternateDataStreams(tempPath).Count(), "Total amount of File.EnumerateAlternateDataStreams() streams do not match.");
Assert.AreEqual(currentNumberofStreams, fi.EnumerateAlternateDataStreams().Count(), "Total amount of FileInfo() streams do not match.");
var fileSize = File.GetSize(tempPath);
Assert.AreEqual(UnitTestConstants.TenNumbers.Length, fileSize);
// Create alternate data streams.
// Because of the colon, you must supply a full path and use PathFormat.FullPath or PathFormat.LongFullPath,
// to prevent a: "NotSupportedException: path is in an invalid format." exception.
File.WriteAllLines(tempPath + Path.StreamSeparator + UnitTestConstants.MyStream, UnitTestConstants.StreamArrayContent, PathFormat.FullPath);
File.WriteAllText(tempPath + Path.StreamSeparator + UnitTestConstants.MyStream2, UnitTestConstants.StreamStringContent, PathFormat.FullPath);
var newNumberofStreams = File.EnumerateAlternateDataStreams(tempPath).Count();
Console.WriteLine("\n\nCurrent stream Count(): [{0}]", newNumberofStreams);
// Enumerate all streams from the file.
foreach (var stream in fi.EnumerateAlternateDataStreams())
{
Assert.IsTrue(UnitTestConstants.Dump(stream, -10));
// The default stream, a file as we know it.
if (Alphaleonis.Utils.IsNullOrWhiteSpace(stream.StreamName))
{
Assert.AreEqual(fileSize, stream.Size);
}
}
// Show the contents of our streams.
Console.WriteLine();
foreach (var streamName in UnitTestConstants.AllStreams)
{
Console.WriteLine("\n\tStream name: [{0}]", streamName);
// Because of the colon, you must supply a full path and use PathFormat.FullPath or PathFormat.LongFullPath,
// to prevent a: "NotSupportedException: path is in an invalid format." exception.
foreach (var line in File.ReadAllLines(tempPath + Path.StreamSeparator + streamName, PathFormat.FullPath))
{
Console.WriteLine("\t\t{0}", line);
}
}
}
catch (Exception ex)
{
Console.WriteLine("\n\tCaught (unexpected) {0}: [{1}]", ex.GetType().FullName, ex.Message.Replace(Environment.NewLine, " "));
Assert.IsTrue(false);
}
finally
{
File.Delete(tempPath);
Assert.IsFalse(File.Exists(tempPath), "Cleanup failed: File should have been removed.");
}
Console.WriteLine();
}
