Remove redundant allowDupes=false.
Use alias to reduce noise.
Make `maxArr` an instance car so tests can use it too :)
Add useful helper function to repeat a character.
Ensure returned high card value is correct.
Ensure returned pair value is correct.
Ensure returned 2-pair values are correct.
Ensure returned 3-of-a-kind value is correct.
Ensure returned straight value is correct.