Classes not recognized in their unit test code

Question

I have a C# class library, which I'll call "MyLibrary," for which I have made a unit test project, which I will call "MyLibrary.Test." MyLibrary contains several class definitions. Currently, all of these references are broken. Specifically, they are marked with the error "The type or namespace name 'MyClass' could not be found (are you missing a using directive or an assembly reference?)." Both the using directive and the assembly reference are present, like so:

using System;
using System.Collections.Generic;
using Microsoft.VisualStudio.TestTools.UnitTesting;
using MyLibrary;

namespace MyLibrary.Test
{
    /// <summary>
    /// Test class for MyLibrary.MyClass.
    /// </summary>
    [TestClass()]
    public class MyClassTest
    {

        private TestContext testContextInstance;
        public TestContext TestContext [...]

        internal virtual MyClass CreateMyClass()
        {
            [...]
        }

What is the problem and how do I resolve it?

Answer 1

From this snippet is not possible to understand which is the problem.

Does MyClass exist?

---

Matteo Migliore

Bloghttp://blogs.ugidotnet.org/matteomigliore
Twitterhttp://twitter.com/matteomigliore
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Answer 2

Yes, MyClass exists.

Answer 3

Try to open the project folder in Explorer, delete the "obj" and "bin" folders and rebuild the solution.

---

Matteo Migliore

Bloghttp://blogs.ugidotnet.org/matteomigliore
Twitterhttp://twitter.com/matteomigliore
CodePlex

http://hyperionsdk.codeplex.com http://sample.codeplex.com

Answer 4

I have to ask,

Have you added a reference to the DLL containing MyClass in your unit test project?

(right click on the project -> click on Add Reference -> select the project/DLL containing the class)

Regards,
Alvaro

Answer 5

Hello,

Do these classes marked as internal ? if they do you should either change them to public or use the InternalVisibleToAttribute.

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Eyal (http://shilony.net), Regards.

Answer 6

Please expand the projects reference in your Visual Studio, and then open your this problem source code page in your Visual Studio.

Now, take a screenshot and share it to us in your post.

Before the problem occurred, what have you did to your this Visual Studio solution?

Commonly, we will try to delete the references form the project, and the re-add them, if we face the reference problem.

If there's any concern, please feel free to let me know.

Best wishes,

---

Mike Zhang[MSFT]
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