/// <summary>
    /// Subject under test = InvoiceSender
    /// Want to verify that the IEmailService.Send(MailMessage) method is being called from SendInvoice(float, string)
    /// </summary>
    [Test]
    public void SendInvoiceUsingEmailService_RecordReplay()
    {
        var mocks = new MockRepository();
        // dependency
        var mockEmailService = mocks.DynamicMock<IEmailService>();

[TestFixture]
public class LogAnalyzerTests
{
 
    /// <summary>
    /// using old Record / Replay syntax
    /// Class under test = LogAnalyzer
    /// Want to verify that the IWebService.LogError(filename too short) method is being called from LogAnalyzer.Analyze(filename)
    /// </summary>
    [Test]