ClassicAssert.IsInstanceOf
ClassicAssert.IsInstanceOf succeeds if the object provided as an actual value is an instance of the expected type.
ClassicAssert.IsInstanceOf(Type expected, object actual);
ClassicAssert.IsInstanceOf(Type expected, object actual,
string message, params object[] params);
ClassicAssert.IsInstanceOf<T>(object actual);
ClassicAssert.IsInstanceOf<T>(object actual,
string message, params object[] params);