MissingMethodException on a property in NUnit test

Question

I'm having problems with a test. For some reason, that I haven't figured out, I can't access a n object's public property.

My class is the following:

public class FakeSMTPConnector : ISMTPConnector
{
    private bool _MailSent = false;
    public bool MailSent
    {
        get { return _MailSent; }
        set { _MailSent = value; }
    }

    private MailMessage _Message = null;
    public MailMessage Message
    {
        get { return _Message; }
        set { _Message = value; }
    }


    public FakeSMTPConnector()
    {

    }

    public void SendMail(MailMessage mail)
    {
        _MailSent = true;
        _Message = mail;
    }
}

I'm using this to simulate an SMTPConnection and send an email message. A class that handles email messages will then use this SMTPconnector to fake the delivery.

My test is as follows:

[Test]
    public void EnviarMensagemContactoSentTest()
    {
        //arrange
        FakeSMTPConnector connector = new FakeSMTPConnector();
        EmailManager manager = new EmailManager(connector);

        //act
        manager.SendMessage("a@a.com", "abc", "def", "ghi");

        //assert
        Assert.IsNotNull(manager, "Manager instance not created");
        Assert.IsTrue(connector.MailSent, "Message not sent");
        Assert.IsNotNull(connector.Message);
    }

When Nunit attempts the last assert, that acesses the Message property, it fails with an exception that doesn't make much sense:

System.MissingMethodException : Method not found: 'System.Net.Mail.MailMessage Project.FakeSMTPConnector.get_Message()'.

Am I doing anything wrong? I'm getting started adding tests and doing some refoactoring on a project so alot of this is kinda new and might be that I'm making somee confusion onsomething real basic up in my head...

Thanks!

Can you add the namespace and the EmailManager class and the stack trace? — eyossi, Jun 06 '12 at 14:30
Agree with @DanielA.White to do a full rebuild. Also are you running through the NUnit test runner? If so have you made sure it is reloading your tests after you've built them? — Peter Monks, Jun 06 '12 at 15:34

score 2 · Answer 1 · answered Jan 04 '13 at 22:22

2

I know this is old, but I had the same issue. Cleaning Solution and then doing a Rebuild did not work for me.

Removing the offending dll from the GAC (C:\Windows\assembly) fixed it for me.

answered Jan 04 '13 at 22:22

Rickey Galloway

41
3

2

Can you elaborate? Do you mean the re-build didn't remove the dll, and you had to manually remove it to re-build? – BrDaHa Jun 06 '13 at 19:43
I had the same issue, because the software (with the same version number) I was debugging has already been installed in my laptop. My test project will not call the code but the assembly in `GAC (C:\Windows\assembly)`. The paths of modules used can be examined in `Modules` window. – Edward Jul 21 '21 at 08:47

score 0 · Answer 2 · answered Oct 08 '19 at 21:37

0

Restarting Visual Studio did it for me.

answered Oct 08 '19 at 21:37

Felix

3,783
5
34
53

MissingMethodException on a property in NUnit test

2 Answers2