MSTEST0002: False positive, generic test class is valid

[Evangelink]

Describe the bug

Rule MSTEST0002 always raises an issue on generic classes but this is leading to false positives. It's perfectly valid to have a generic test class that serves as base class to other classes.

The generic class itself cannot be run which could be flagged by a different analyzer (see #2051 (comment)).

Steps To Reproduce

[TestClass]
public /*abstract*/ class C<T>
{
    [ClassInitialize(InheritanceBehavior.BeforeEachDerivedClass)]
    public static void CI(TestContext testContext) 
    {
    }

    [ClassCleanup(InheritanceBehavior.BeforeEachDerivedClass)]
    public static void CC()
    {
    }

    [TestInitialize]
    public void TI()
    {
    }

    [TestCleanup]
    public void TC()
    {
    }

    [TestMethod]
    public void C1() // This won't be called from C<> but this would work through A
    {
    }
}

[TestClass]
public class A : C<int>
{
    [TestMethod]
    public void A1()
    {
    }

    [TestInitialize]
    public void ATI()
    {
    }

    [TestCleanup]
    public void ATC()
    {
    }
}

AB#1976480