• It looks like 1 was fixed long ago
• description was clarified
• raised new issue on lack of tests

Fixed.

Ruby :

• no random tests

Not an issue.

Not an issue.

You might want to add some test cases where the result of the block changes on subsequent iterations.

Code example in description should use Markdown syntax to display code properly

Thanks for the comments, tried to incorporate suggestions as best I could!

I like where this is going!

Based on the description, I was anticipating mapping the proc over the same elements repeatedly, not repeating the elements, then applying the block.

Either the description should be re-written, or the test cases should be re-done.

Fun to play with functions like this, either way!

Some suggestions:

1. The method name doesn't match the one in your tests, it had to be renamed.
2. From the description, it's not clear you should concatenate the results of each iteration. In other words, it sounds like the second test should return [3,4,5] instead of [2,3,4,2,3,4]
3. The final tests are the same as the given ones. You should add more tests when people submit to cover every edge case.

Please use snake_case for Ruby methods. When in doubt, you can do worse than following the style of a language's own documentation...

Please use Test.assert_equals instead of Test.expect as Test.assert_equals provides better feedback.