[TestClass]
public class XmlFormatDetectorTest : BDDTest<XmlFormatDetectorTest>
{
    [TestMethod]
    public void Detects_that_a_file_follows_the_FHNBransjestandard1_format()
    {
        Given.we_got_a_file("FNHBransjestandard1.xml");
        When.we_try_to_detect_the_file_format();
        Then.fileformat.ShouldBe(KnownFileFormats.FNHBransjestandard1);
    }

    [TestMethod]
    public void Detects_that_a_file_follows_the_FHNBransjestandard103_format()
    {
        Given.we_got_a_file("FNHBransjestandard103.xml");
        When.we_try_to_detect_the_file_format();
        Then.fileformat.ShouldBe(KnownFileFormats.FNHBransjestandard103);
    }

    [TestMethod]
    public void Detects_that_a_file_is_unknown()
    {
        Given.we_got_a_file("BHRamberg.xml");
        When.we_try_to_detect_the_file_format();
        Then.fileformat.ShouldBe(KnownFileFormats.Unknown);
    }

    [TestMethod]
    public void Empty_xml_document_is_of_unknown_format()
    {
        xml = new XDocument();
        When.we_try_to_detect_the_file_format();
        Then.fileformat.ShouldBe(KnownFileFormats.Unknown);
    }

    private void we_got_a_file(string filename)
    {
        using (var xmlReader = new XmlTextReader(resources.GetResourceFile(filename)))
        {
            xml = XDocument.Load(xmlReader);
        }
    }

    private void we_try_to_detect_the_file_format()
    {
        fileformat = formatDetector.FindFileFormat(xml);
    }

    private KnownFileFormats fileformat;
    private XmlFormatDetector formatDetector;
    private ResourceRepository resources;
    private XDocument xml;

    [TestInitialize]
    public void Setup()
    {
        formatDetector = new XmlFormatDetector();
        resources = new ResourceRepository();
    }
}

[TestClass]
public class StaffPaymentReportTest : BDDTest<StaffPaymentReportTest>
{
    [TestMethod]
    public void Should_find_company_numbers_in_reports()
    {
        Given.we_have_a_File_with_multiple_companies();
        When.we_try_to_find_company_numbers();
        Then.companyNumbers.ShouldHave(2);
    }

    [TestMethod]
    public void Should_find_company_numbers_even_if_formatted()
    {
        Given.we_have_a_file_with_formatted_company_number();
        When.we_try_to_find_company_numbers();
        Then.companyNumbers.ShouldHave(1);
    }

    [TestInitialize]
    public void We_have_a_staff_payment_report()
    {
        staffPaymentReport = new StaffPaymentReport(new CompanyNumberValidator());
        xmlReportParser = new XmlReportParser();
        resourceRepository = new ResourceRepository();
    }

    private void we_have_a_file_with_formatted_company_number()
    {
        filename = "ForetaksnummerFormatering.xml";
    }

    private void we_have_a_File_with_multiple_companies()
    {
        filename = "Flere_Bedrift_Noder_Med_Personer.xml";
    }

    private void we_try_to_find_company_numbers()
    {
        using (var file = resourceRepository.GetResourceFile(filename))
        {
            parsedFile = xmlReportParser.Parse(file, filename);
            companyNumbers = staffPaymentReport.FindCompanyNumber(parsedFile.DataTable);
        }
    }

    private StaffPaymentReport staffPaymentReport;
    private ResourceRepository resourceRepository;
    private XmlReportParser xmlReportParser;
    private List<string> companyNumbers;
    private ParsedReport parsedFile;
    private string filename;
}