Testing private static generic methods in C#

How does one test private static generic methods? The internals are visible to my test project. How can one test these methods?

internal class Foo {

    // Non-static.  This works!
    private T TestThisMethod1<T>(T value) {
        Console.WriteLine("Called TestThisMethod1");
        return value;
    }

    // Static.  Can't get this to work!
    private static T TestThisMethod2<T>(T value) {
        Console.WriteLine("Called TestThisMethod2");
        return value;
    }

    // Static.  Can't get this to work!
    private static void TestThisMethod3<T>(T value) {
        Console.WriteLine("Called TestThisMethod3");
    }

    // Static.  Can't get this to work!
    private static void TestThisMethod4<T, T2>(T value, T2 value2) {
        Console.WriteLine("Called TestThisMethod4");
    }
}

The first example works. It's not static. It's the example from http://ift.tt/2jHyYv1.

[TestMethod]
public void PrivateStaticGenericMethodTest() {

    int value = 40;
    var foo = new Foo();

    // This works.  It's not static though.
    PrivateObject privateObject = new PrivateObject(foo);
    int result1 = (int)privateObject.Invoke("TestThisMethod1", new Type[] { typeof(int) }, new Object[] { value }, new Type[] { typeof(int) });

    // Fails
    int result2 = (int)privateObject.Invoke("TestThisMethod2",  BindingFlags.Static | BindingFlags.NonPublic, new Type[] { typeof(int) }, new Object[] { value }, new Type[] { typeof(int) });

    // Fails
    PrivateType privateType = new PrivateType(typeof(Foo));
    int result2_1 = (int)privateType.InvokeStatic("TestThisMethod2", new Type[] { typeof(int) }, new Object[] { value }, new Type[] { typeof(int) });

    // Fails
    int result2_2 = (int)privateType.InvokeStatic("TestThisMethod2", BindingFlags.Static | BindingFlags.NonPublic, new Type[] { typeof(int) }, new Object[] { value }, new Type[] { typeof(int) });

    // Stopping here.  I can't even get TestThisMethod2 to work...
}