Why does visual studio 2012 not find my tests?

Question

I have some tests that use the built in Microsoft.VisualStudio.TestTools.UnitTesting, but can not get them to run.

I am using visual studio 2012 ultimat

Answer 1

I had the same problem.. In my case it was caused by a private property TestContext.

Changing it to the following helped:

public TestContext TestContext
{
    get;
    set;
}

After cleaning and building the solution (as described in @Ourjamie 's answer), the test methods in the affected test class were available in the Test Explorer.