单元测试FTPWebRequest / FTpWebResponse

FTPWebResponse

ExceptionContainsFileNotFound(Exception ex)

if (ex is WebException)
{
    var response = (ex as WebException).Response;
    if (response is FtpWebResponse)
    {
        if ((response as FtpWebResponse).StatusCode == FtpFileNotFoundStatus)
        {
            return true;
        }
    }
}

try
{
    var request = WebRequest.Create("ftp://notexistingfptsite/");
    request.Method = WebRequestMethods.Ftp.ListDirectory;

    request.GetResponse();
}
catch (WebException e)
{
    // trick :)
    classUnderTest.FtpFileNotFoundStatus = FtpStatusCode.Undefined;

    var fileNotFoundStatus = classUnderTest.ExceptionContainsFileNotFound(e);

    Assert.That(fileNotFoundStatus, Is.True);
}

var ftpWebResponse = Rhino.Mocks.MockRepository.GenerateStub<FtpWebResponse>();
ftpWebResponse.Stub(f=>f.StatusCode).Return(FtpStatusCode.AccountNeeded);