public void GetInt64_GivenOrdinal_ReturnsCorrectly()
        {
            // arrange
            var sut = new CacheableDataReader(actualDataReader);
            sut.Read();

            // act
            var val = sut.GetInt64(sut.GetOrdinal("Int64Column"));

            // assert
            Assert.That(val, Is.EqualTo(15));
        }