Adjusted, broke most (all?) solutions due to various hard coding.
Let me know if it is ok now.
That's a question, not an issue.
This was fixed.
Random tests generate integers instead of arrays as input. ( So they consistently expect NaN. That's not random, either. )
Please leave issues open until you have confirmation that the issue is actually solved, or more than a reasonable amount of time has passed (you don't have to wait weeks for confirmation).
Unfortunately, that is not to do it.
Thanks! I think the most difficult part of drafting this kata for me was describing it.
This comment is hidden because it contains spoiler information about the solution
It is unclear from the Description that the sequence from [11,6,-2,0,5,-4,2] where the element are e.g. 3 apart, the only sequence to be considered is [-2,-4]. [11,0,2] and [6,5] are perfectly valid.
Do not rely on examples, specify such things, or we'll have to reverse engineer what you were thinking when you wrote the kata. This is prone to error, and something that may be perfectly sensible to you may not be to us.
No random tests.
The Description text should have some escapes in front of *s ( and possibly _s ).
* is used to start / end italics ( as is _ ). If you want just a *, you should escape it, with \.
You should make some tests in order to return an empty array.