 At the suite level the <code class="computeroutput"><span class="identifier">set_up</span></code> function is called once -- before
          the suite execution starts -- and <code class="computeroutput"><span class="identifier">tear_down</span></code>
          function is called once -- after the suite execution ends. It comes in
          three forms.
        </p>
<p>
          First expects two functions for set-up and tear-down (the second one can
          be skipped).
        </p>
<p>
          The