Awesome solution xD

The test suite is lacking, it isn't a cheat.

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Fixed (better late than never).

Ah ah, content que tu y sois arrivé !

I passed by returning 2, guess it's an insta-pass... Is this beta?

Agreed, the Description is not very good at all.

the same with me... this kata shouldn't pass the beta phase..

Test changed, thanks for your feed :)

Test added.

Thanks for bringing that in my notice.

I don't see where your problem can be. As said in the details you have to report a string like this :
** "Buy: b Sell: s" ** where b and s are 'double' formatted with no decimal, b representing the total price of bought stocks and s the total price of sold stocks
or like this :
** "Buy: b Sell: s; Badly formed nb: badly-formed 1st simple order ;badly-formed nth simple order ;" **
So in no test can the expected string be "".
Maybe you have to look to a test that could give you a void string.

Can be confusing yeas, I fixed

All characters in searchWord other than the wildcard should be treated as normal characters, not their RegExp special meaning.

No--faulty tests. I've fixed them now, though. Thanks for bringing this to my attention!