Description should be language-agnostic

I created a Rust translation, please take a look!

I made a Rust translation, please take a look!

Please move calls of the user solution to within the it-block containing the associated actual tests. This is doubtlessly documented somewhere, but I don't know exactly where. See this fork. ( the Diff tab is useful! )

Not sure how you feel about solutions like mine, perhaps some larger tests are warranted?

you could enlarge a bit the possible ranges for the random cases (not too much, otherwise you could get troubles about the number of valid cases)

( JS, possibly others )

Do not rely on random tests only. Have fixed tests for any edge cases you can think of, and keep an eye out for ones that you didn't immediately think of ( which random tests might generate for you or for other solvers, and which you can then add as fixed tests ). ( What is and is not an edge case may differ for different solutions. )

Also, use test headers instead of logging text directly to the console.

CW has enough straight up map / filter / reduce kata ( with completely artificial transformation to make it worse ). You may have already noticed the general sentiment from the satisfaction rating.

Read available documentation, and, when the urge to create a kata strikes you, ask yourself not what CodeWars can do for you, but what you can do for CodeWars. Please create interesting kata.

Traceback (most recent call last):
  File "/workspace/default/src/codewars-test/codewars_test/test_framework.py", line 111, in wrapper
    func()
  File "tests.py", line 7, in __
    test.assert_equals(сhange_array([10]), [100])
NameError: name 'сhange_array' is not defined