/// <summary>
/// Helper method to load a disc FILE into a MemoryStream (as unicode string)
/// </summary>
/// <param name="filePath">The path to the FILE containing the data</param>
/// <returns>MemoryStream containing the data in the FILE</returns>
public static MemoryStream LoadFileToStream(string filePath)
{
var ms = StreamHelper1.LoadFileToStream(filePath);
var strm = StreamHelper1.EncodeStream(ms, Encoding.Unicode);
return(StreamHelper1.LoadMemoryStream(strm));
}
/// <summary>
/// IValidationStep.ExecuteValidation() implementation
/// </summary>
/// <param name='data'>The stream cintaining the data to be validated.</param>
/// <param name='context'>The context for the test, this holds state that is passed beteen tests</param>
public override Stream Execute(Stream data, Context context)
{
MemoryStream dataToValidateAgainst = null;
try
{
try
{
if (ReadAsString)
{
dataToValidateAgainst =
StreamHelper.LoadMemoryStream(Common.StreamHelper.LoadFileToString(_comparisonDataPath));
}
else
{
dataToValidateAgainst = !ReadAsUnicode?StreamHelper.LoadFileToStream(_comparisonDataPath) :
Common.StreamHelper.LoadFileToStream(_comparisonDataPath);
}
}
catch (Exception e)
{
context.LogError("BinaryValidationStep failed, exception caugh trying to open comparison file: {0}", _comparisonDataPath);
context.LogException(e);
throw;
}
try
{
data.Seek(0, SeekOrigin.Begin);
dataToValidateAgainst.Seek(0, SeekOrigin.Begin);
if (_compareAsUtf8)
{
// Compare the streams, make sure we are comparing like for like
StreamHelper.CompareStreams(StreamHelper.EncodeStream(data, System.Text.Encoding.UTF8), StreamHelper.EncodeStream(dataToValidateAgainst, System.Text.Encoding.UTF8));
}
else
{
StreamHelper.CompareStreams(data, dataToValidateAgainst);
}
}
catch (Exception e)
{
context.LogError("Binary validation failed while comparing the two data streams with the following exception: {0}", e.ToString());
// Dump out streams for validation...
data.Seek(0, SeekOrigin.Begin);
dataToValidateAgainst.Seek(0, SeekOrigin.Begin);
context.LogData("Stream 1:", data);
context.LogData("Stream 2:", dataToValidateAgainst);
throw;
}
}
finally
{
if (null != dataToValidateAgainst)
{
dataToValidateAgainst.Close();
}
}
return(data);
}
