Intern Functional Testing, how to iterate array of elements

Question

First let me say that I am fairly new to intern and Leadfoot API. What I am trying to do is iterate through an array of elements and perform an assertion on each of them. Here is my code:

'Alerts': function () {
        return this.remote 
        .get(require.toUrl(url))
        .setFindTimeout(timeout)
        .findById('alertsHeader')
        .click()
        .end()
        .findByClassName('_3WMFy')
        .findAllByCssSelector('div')
        .getVisibleText()
        .then(function(texts){
            assert.equal(texts, [ 'ALL', 'P1', 'P2', 'P3' ]);   

        });
    }

However, the test fails with the following output:

AssertionError: expected [ 'ALL', 'P1', 'P2', 'P3' ] to equal [ 'ALL', 'P1', 'P2', 'P3' ]

Can someone explain this error? Maybe I am missing something (as is often the case) but I stared at this for while, and I'm pretty sure those two are equal. So I purposely changed one line to make one of the elements not match and got the following error:

    AssertionError: expected [ 'ALL', 'P1', 'P2', 'P3' ] to equal [ 'ALL', 'P1', 'P2', 'P377' ]

  [
    0: "ALL",
    1: "P1",
    2: "P2",
E   3: "P377",
A   3: "P3",
    length: 4
  ]

My questions are, I am doing something wrong here, or this a bug? Is this the correct way to iterate these elements, or should I be doing something else? Is it possible to use a for loop here? What would be the best way to do this? Any help provided would be much appreciated!