A single letter test case would be useful. "A" -> "Aa"

now on dart
The Translation Dart

The author has left. All hope lies with the community.

Kyute

Enabled in this fork

Ruby fixed in this fork

(0 --> 28 out of 234 solutions invalidated)

Thanks you

I added more feedback to failed tests, now you can see what is tested and what input makes your solution to fail.

JavaScript

In what language?

expected 'four' to equal 'n/a', what kind of test is this, what exactly is not being tested?

Approved

python new test framework is required. updated in this fork

OP solved it, closing

Scala translation