f=v=>"BOOM"

This issue is also fixed, now it uses appropriate information.

Length of multiline solutions is correctly identified as too large, but not presented correctly in failure messages:
Maximum length of characters
Current characters length 19 should be less or equal than 75

• JavaScript tests should use Chai assertions instead of obsolete CW framework [Finished OK]
• Inputs presented with failure messages would be really helpful [Finished OK]

The above are implemented OK now and entire solution is more compatible with other nodejs versions as well.
Also: works with chai assert and there are more informative messages on most cases.

Good to know that lo_ can now be used, was considering to use for similar purpose.

In JS tests, you can use Lodash, which has many functions useful for creating random tests: shuffling, sampling, random generators, etc.

Changed to chai expects, asserts > compatible with v10/12 but randomizations need to be re-customized to support as such, be patient as I am currently fixing this. If there is anything easy to use for random tests on chai please suggest.

NOTE: also fixed the message mentioned.

Well noted, will fix.

Well noted, will fix.

Length of multiline solutions is correctly identified as too large, but not presented correctly in failure messages:

> Maximum length of characters
   Current characters length 19 should be less or equal than 75

• JavaScript tests should use Chai assertions instead of obsolete CW framework
• Inputs presented with failure messages would be really helpful

Re-added kata with improvements/checks.

Off course I wanna ask about "python" and php! Thanks for answer!

The current kata is already in js language. I will try and make this available also in PHP.

NOTE: This is a mac address converter - canonical to token ring format, if you need the program to just change a mac address in any way, this should be a separate Kata.

Macadress change, how I can make this by JavaScript and PHP/