You're all right! That "bug" was occurred because the Addblock Plus plugin made some sort of javascript block. I disabled the plugin and all it's Okay now. I finally submit my solution.
Thanks for your help. I really appreciate it!

Your error should be: "Input [Foo, Bar, Baz] expected: but was: ". This looks like a minor bug in codewars.com forgetting to escape html characters.

You can view the real error by using your html debugger.

I made the exercise expect output of that type because the behavior of Stream.limit(long maxSize) is to set an upper limit on the stream, it does not affect streams with fewer elements than maxSize.

First of all, thank you for that Kata.

I passed in all test when I click Run Tests Button.

But when I submit it I got:
20 Passed
1 Failed
0 Errors

It fails here:

testExercise3B(lesson2.Lesson2Test)
Input [Foo, Bar, Baz] expected: but was:

Maybe I misunderstood the Exercise 3 Notes.

Any comment will be welcome!