The random tests crash sometime even with a correct solution, due to an off-by-one error in the random tests generation.

The indices in random_list should generate values in the range of 0 - 99, since it is used to index full_test_list which has a length of 100.

To fix this, you can change this line

random_list=[random.randint(1,100) for _ in range(20)]

into

random_list=[random.randint(0,99) for _ in range(20)]

Approved by someone.

Both points seem fixed some time ago.

Approved

1. Froze the preloaded lists to prevent mutations

2. Fixed a bug in the author & refsol

   Testing findEmployeesRole('Mort Smith')
   It should work for random inputs too: expected 'Warehouse Picker' to equal 'Truck Driver'
   

Approved.

I think the first case in the description should be $f\!\left(\sum_{\text{digits}(n)}\right)$ rather than just $\sum_{\text{digits}(n)}$, since the digit sum may be more than 9 & need further reductions.

Enabled Ruby 3.0 + RSpec [1]

1. Enabled Ruby 3.0 + RSpec

2. Added Java code blocks in the description for the required error to be thrown

Approved some time ago.

Added in this fork, too late to implement the latter suggestion after 9 years I'm afraid.

Added in this fork

Added in this fork (4 --> 53 invalidated)

1. Uses RSpec

2. Added random tests [1]

3. Language agnosticism in the description & added a small remark on the wrapping behaviour [2] [3]