public void WhenToBinaryCalled_ExpectExpectedValueReturned()
        {
            // Arrange
            var date = new DateTime(2015, 10, 15);
            var expected = date.ToBinary();

            // Act
            var target = new DateTimeWrap(date);
            var actual = target.ToBinary();

            // Assert
            actual.Should().Equal(expected);
        }