Microsoft Moles sample won't work

Question

HI,

I'm using VS2010, .Net 4.0 on a Windows 7 x64bit version.

I have downloaded the sample Y2kMoles from here (http://research.microsoft.com/en-us/projects/pex/y2kmoles.zip), but i can't get it to work.

 

        [TestMethod]
        [HostType("Moles")]
        public void Y2k()
        {
            MDateTime.NowGet = () => new DateTime(2000,1,1);

            if(DateTime.Now == new DateTime(2000,1,1))
                throw new Exception("y2k bug!!!!");
        }

I keep getting the following error: "Skipping test with HostType attribute.".

 

Any idea??

/Peter

 

(I understand that this isn't just straightforward to answer, but I believe I have read somewhere, that MS staff would answer/comment on any post (if no other do) within 2 days ?)

Answer 1

I'm not an expert on this sample, but I will go find one. Could someone else take a crack at this question? Thanks!

---

Ed Price a.k.a User Ed, Microsoft Experience Program Manager (Blog, Twitter, Wiki)

Answer 2

Might want to try this link. 

http://stackoverflow.com/questions/4105604/how-to-read-unittest-projects-app-config-from-test-with-hosttypemoles

Answer 3

Might want to try this link. 

http://stackoverflow.com/questions/4105604/how-to-read-unittest-projects-app-config-from-test-with-hosttypemoles

Thanks for your comment - unfortunately this link is related to loading from the app.config.

Maybe this is not about Moles, but about the HostType attribute. What does the error (Skipping test with HostType attribute) mean and what is the reason for this to happening - and finally - why does the error occur when using Moles ?

Thank you in advance.

Answer 4

I tried the sample, when run it in VS 2010, it prompt me to add “[assembly: MoledType(typeof(System.DateTime))]”, however, below code works well on my side, the Y2k() method get executed successfully.

 

using System;

using System.Moles;

using Microsoft.VisualStudio.TestTools.UnitTesting;

using Microsoft.Moles.Framework;

[assembly: MoledType(typeof(System.DateTime))]

 

namespace Y2kMoles

{

    [TestClass]

    public class Y2kTest

    {

        [TestMethod]

        [HostType("Moles")] // add this attribute

        public void Y2k()

        {

            MDateTime.NowGet = () => new DateTime(2000,1,1);

 

            if(DateTime.Now == new DateTime(2000,1,1))

                throw new Exception("y2k bug!!!!");

        }

    }

}

 

---

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Regards,
Eric Yang
Microsoft Online Community Support

Answer 5

 

I tried the sample, when run it in VS 2010, it prompt me to add “[assembly: MoledType(typeof(System.DateTime))]”, however, below code works well on my side, the Y2k() method get executed successfully.

Hi Eric,

Thanks for your comment, but I have just downloaded the sample and run it - no changes, no nothing, but it doesn't work.

Is it the way I have installed moles or what is it that cause the method to be skipped because HostType is added ??

/Peter

 

Answer 6

Hi Peter,

Did you try "ASP.NET" host type? as the example in this document: http://msdn.microsoft.com/en-us/library/ms243351.aspx

The constructor of HostTypeAttribute class cannot be used by partially trusted code, you can use below method to check the trust level of the executing assembly:

        [TestMethod]

        public void TestTrustLevel()

        {

            bool isFullTrusted = Assembly.GetExecutingAssembly().IsFullyTrusted;

            if (isFullTrusted == false)

            {

                throw new Exception(Assembly.GetExecutingAssembly().FullName + " ==> is partially trusted.");

            }

        }

You may also create a new test project, and use [HostType("Moles")] in a test method, will same error occur?

By the way, I’m using Moles of version 0.94.51023.0.

 

---

Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Regards,
Eric Yang
Microsoft Online Community Support

Answer 7

Hi Erik,

The versions i have is: mscorlib.Moles.dll = 4.0.30319.239, mscorlib.Behaviors.dll = 0.94.51023.0.

Using APS.NET host type, doesn't change anything, I still get the "Skipping test with HostType attribute" error - But since setting the host type always fail,i guess it hasn't anything to do with moles, right ??

IsFullTrusted return true.

Thanks

BR

Peter

 

Answer 8

Hi Peter,

Did you try the project on another machine? will the same issue reproduce?

---

Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Regards,
Eric Yang
Microsoft Online Community Support

Answer 9

Hi Eric,

I have got it to work by reinstalling Moles .... (?)

This also fixed the problem running Moles with NUnit.

This work with MSTest:

        [TestMethod]
        [HostType("Moles")]
        public void Y2k()
        {
            MDateTime.NowGet = () => new DateTime(2000, 1, 1);

            if (DateTime.Now == new DateTime(2000, 1, 1))
                throw new Exception("y2k bug!!!!");
        }

and this work on NUNIT:

        [Test]
        public void Y2kWithNunit()
        {
            using (MolesContext.Create())
            {
                MDateTime.NowGet = () => new DateTime(2000, 1, 1);

                if (DateTime.Now == new DateTime(2000, 1, 1))
                    throw new Exception("y2k bug!!!!");
            }
        }

For both tests, "[assembly: MoledType(typeof(DateTime))]" is required - as you said earlier.

I Appreciate your help.

BR

Peter

Answer 10

Hi Peter,

Glad to hear the you got it resolved! seems the installation of Moles is corrupted, anyway, congratulations:)

---

Please remember to click “Mark as Answer” on the post that helps you, and to click “Unmark as Answer” if a marked post does not actually answer your question. This can be beneficial to other community members reading the thread.

Regards,
Eric Yang
Microsoft Online Community Support