Reverse digits

Expected Behaviour
When numberToReversedDigits is passed a number, it should return a reversed array of that number's digits.
E.g.
12345
becomes
[5, 4, 3, 2, 1]
Assertion
- returns a reversed array of the number's digits

When numberToReversedDigits is passed a number, it should return a reversed array of that number's digits.
E.g.
12345
becomes
[5, 4, 3, 2, 1]