test.html

<!-- Polymer dependency -->
<link rel="import" href="../polymer/polymer.html">

<!-- External Polymer imports dependency -->
<link rel="import" href="../polymerfire/firebase.html">
<link rel="import" href="../polymerfire/firebase-app.html">
<link rel="import" href="../polymerfire/firebase-auth.html">


<!-- Style imports -->
<link rel="import" href="../paper-button/paper-button.html">
<link rel="import" href="../iron-icons/iron-icons.html">

<!--
`<epiviz-workspace>` manages user workspaces.

To use, add `<epiviz-workspace>` in the page

      <epiviz-workspace></epiviz-workspace>

@demo demo/index.html Example page showing a workspace element
-->

<dom-module id="test-fire">

    <template>
        <style>
            :host {
            }
        </style>
        <paper-button raised
            on-tap="test">
            Test
        </paper-button>
    </template>

    <script>
        Polymer({
            /* Custom element html tag */
            is: 'test-fire',
            // behaviors: [],

            /* Properties that can be defined on the element */
            test: function() {
                var rand = Math.random() * 100;
                rand = Math.floor(rand);
                this.fire("workspaceChanged", {
                    id: rand,
                });
                var observer = new MutationObserver(function(mutations) {
                    mutations.forEach(function(m) {
                        console.log(m.addedNodes[0])
                    });
                });
                var config = { attributes: true, childList: true, characterData: true };
                observer.observe(document.body, config);
            },

            // Initialization that should happen or use FactoryImpl 
            // created: function() {},

            /* callback function after the element is attached to the DOM */
            attached: function() {
            },

            /* callback function after the element is initialized */
            // ready: function() {}
        });
    </script>
</dom-module>