JS: Node v12 should be used along with the appropriate assertion tools (Mocha + Chai)

Java translation: Should we follow method naming conventions here?
static boolean amIAfraid(String day, int num) {

Why on earth would you have a get acessor returning an int (0) ?

Why would you have volume being set as a private setter? THis is madness, why isn't volume just a property that returns the value based on current sideLength.

This is a horrible kata, I hope no one thinks this is good practice for C#

And why methods for setter and getters?

I think this has been written by someone who does Java and knows very little C#

The user can modify the input.

The properties Volume and Surface should each have a public get-accessor and private set-accessor

Setters are not being tested. And why are these called "get-accessor" and "set-accessor"?

You shouldn't use from as a parameter name.

The type of X, Y, and Z is not specified.

I did this task on c# and passed all basic and advanced tests, but all random tests failed.
In output I've got this:
Expected: " 74"
But was: "uid 74"
And I've got the same type of error on every test.
I've tried different comnbinations of hashtags, space and "uid".
What do I do wrong?
Could you help me, please?

( JS and others )

Testing is horribly subpar. I've done some improving on the JS tests ( lots and lots of Best Practices invalidated ..! ), but other languages are just as bad.

Could you test unsorted sequences?
https://www.codewars.com/kata/reviews/55eea63d19278d571d00006c/groups/560adcf41c73d5f6e8000097

What's the point of testing that GetY(x) returns mx+b? It's irrelevant to the solution and the flavor text says I'm a lazy programmer.

Better information in the description would be good. Having to either derive a math equation for an integral or hunt for it online should be unnecessary and slows down learning.