rapper-header">On this page</div>
    <hr>
    <ul>
        <li>
          <a href="#toc_why-do-i-need-tests">Why Do I Need Tests?</a>
        </li>
        <li>
          <a href="#toc_what-tools-can-help-me">What Tools Can Help Me?</a>
        </li>
        <li>
          <a href="#toc_qunit-qunit-dom">QUnit, QUnit DOM</a>
        </li>
        <li>
          <a href="#toc_mocha-chai-dom">Mocha, Chai DOM</a>
        </li>
        <li>
          <a href="#toc_ember-cli">Ember CLI</a>
        </li>
        