Testing private Methods in C#

Testing private methods in a C# can be a bit challenging. This is just to remember what's needed.

[TestClass]
private MyUnit _myUnit;

[TestMethod]
var testMyUnit = new PrivateObject(_myUnit);
...
var result = (List<string>)testMyUnit.Invoke("MyMethod", parameter1, parameter2); 

Assert.AreEqual(2, result.Count());


Original method (to be tested) in MyUnit:
private List<string> MyMethod(string sv1, string sv2)
{
   List<string> retval = new List<string>
                {
                sv1,
                sv2
                };
  return retval;
}