/// <summary>
/// Checks to see if a test result file exists and validates it.
/// </summary>
/// <param name="resultFilePath"></param>
/// <returns>
/// null if the result file doesn't exist; otherwise, a valid test result element.
/// If the result file is invalid or could not be loaded properly, then an error result
/// element is returned specifying the information.
/// </returns>
public static XElement CheckForResultFile(string resultFilePath)
{
if (!File.Exists(resultFilePath))
{
return(null);
}
try
{
XDocument xdoc = XDocument.Load(resultFilePath);
UnitTestingSchemaUtil.ValidateTestResultXml(xdoc);
XElement xresult = xdoc.Root;
xresult.Remove();
return(xresult);
}
catch (IOException ex)
{
// Sometimes, the file exists but is still being written and when we try to
// open it, we get an IOException. Try to detect this specific case and then
// return null so it can be looked for later.
if (ex.Message.StartsWith("The process cannot access the file ", StringComparison.OrdinalIgnoreCase) &&
ex.Message.EndsWith(" because it is being used by another process.", StringComparison.OrdinalIgnoreCase)
)
{
//Console.WriteLine("Exception caught and ignored: {0}", ex.Message);
return(null);
}
else // Otherwise, just report an error
{
return(TestResultUtil.CreateErrorXTestResult(ex));
}
}
catch (System.Xml.Schema.XmlSchemaValidationException ex)
{
return(TestResultUtil.CreateErrorXTestResult("Invalid test result xml: " + ex.Message));
}
catch (System.Xml.XmlException ex)
{
return(TestResultUtil.CreateErrorXTestResult("Invalid test result xml: " + ex.Message));
}
catch (Exception ex)
{
return(TestResultUtil.CreateErrorXTestResult(ex));
}
}
