title: mocha chai expect error
body: <pre><code>AssertionError: expected [] to equal []
  Expected :[]
  Actual   :[]
  </code></pre>
  
  <p>My test is this:</p>
  
  <pre><code>newJobFavored[key].should.equal(favJob[key]);
  </code></pre>
  
  <p>I upgraded all the packages recently and this broke. It appears it should pass if they are two empty arrays.</p>