This kata is broken.

1º The sample test ask you to return 0, and the final test to return undefined
2º You can pass this kata without actually showing on the console the numbers divisible by 5, no matter what you do.

Syntax for only assertion in the entire test suite is incorrect which allows an empty function to pass all tests. Perhaps you should try to complete more Kata and carefully observe their test cases before attempting to write a Kata. Writing a high-quality Kata requires lots of experience and effort.