dentifier">Arg</span><span class="special">&amp;</span> <span class="identifier">arg</span><span class="special">);</span>
</pre>
<p>
          Decorator <code class="computeroutput"><span class="identifier">fixture</span></code> specifies
          a pair of functions (like <code class="computeroutput"><span class="identifier">set_up</span></code>
          and <code class="computeroutput"><span class="identifier">tear_down</span></code>) to be called
          before and after the corresponding test unit.