chai js expect property value empty array

Question

I\'m trying to write a unit test using chai js assertion, and was wondering how to expect arrays with zero length as values.

My Test function expect statement:

Answer 1

I ignored there's a section of change in assertion for properties. So, what made it work for me was :

return expect(functionRetuningPromise()).to.eventually.have.property("key1").that.eql([]);