Why doesn't Zombie.js work with Google Charts?

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I have a simple web page that loads the Google Chart API:

<script type="text/javascript" src="https://www.gstatic.com/charts/loader.js"></script>
<script type="text/javascript">
    google.charts.load("current", {packages:["corechart"]});
    console.log("load() called");
</script>

It works fine when I hit it with my browser. In Chrome, the load() call requests a bunch of external resources:

External resources (Chrome)

In Zombie, only one external resource is requested:

zombie Opened window http://localhost/graph  +7s
zombie GET http://localhost/graph => 200 +17ms
zombie Loaded document http://localhost/graph +15ms
zombie GET https://www.gstatic.com/charts/loader.js => 200 +71ms
load() called
zombie Event loop is empty +135ms

Here is my simple Zombie code, for reference:

Browser.visit('http://localhost/graph', function (err, browser) {
    if (browser.errors.length > 0)
        return console.log(browser.statusCode, browser.errors);
});

No errors are reported. I have also tried waiting for several seconds, browser.wait(), as well as a full web page that actually loads a chart. Zombie never loads the other resources and, naturally, never calls any of the Google Charts callbacks.

Why does Zombie seem to be unable to use the Google Charts API?

1 Answers
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