public void GetGuid_GivenOrdinal_ReturnsCorrectly()
        {
            // arrange
            var sut = new CacheableDataReader(actualDataReader);
            sut.Read();

            // act
            var val = sut.GetGuid(sut.GetOrdinal("GuidColumn"));

            // assert
            Assert.That(val, Is.EqualTo(GuidData));
        }