I didn't have any problem with any of the tests. Be sure to check the exact amount of whitespace you have, include new lines. It can be a real pain to debug something you can't see.

I enjoyed this kata in Javascript but am not able to submit - I'm getting around 8 failed tests, each of which says effectively:

Word-spacing or words are not correct - Expected: 'at dolor sit amet felis', instead got: 'at dolor sit amet felis'

...but in all cases the strings are equivalent. Any suggestions?