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

What about

return 

expect(functionRetuningPromise()).to.eventually.have.property("key1").that.satisfy(function (value) {
  expect(value).to.be.instanceof(Array);
  expect(value).to.have.length.above(0);
  return true;
})