 exceptions may get lost.</p><ul class="at-tag"><li><span class="at-tag parameter">Parameter</span> <span class="module-path">verbose_period</span>: A message is printed every <code class="code">verbose_period</code> tests.</li><li><span class="at-tag parameter">Parameter</span> <span class="module-path">tos</span>: Function used to print values of the enumeration.</li><li><span class="at-tag parameter">Parameter</span> <span class="module-path">len</span>: <code class="code">len</code> consecutive values a