Bug in Test if a Value is an Array

[HooriaHic]

Hello, I found a bug in this challenge,
link
look at the screen shot below:

no description

[ArielLeslie]

What bug?

[HooriaHic]

There is no description about isArray and isNotArray what do i have to do?

[numoonchld]

Referring to the documentation is often helpful, and fortunately, chai has a user-friendly one. See it here: https://www.chaijs.com/api/assert/#method_isarray