'Enable' a module during unit tests

IIBBaseUnitTest.php

<?php

 /**
   * Fake enables a module for the purpose of a unit test
   *
   * @param $name
   *  The module's machine name (i.e. ctools not Chaos Tools)
   */
  protected function enableModule($name) {
    $modules = module_list();
    $modules[$name] = $name;
    module_list(TRUE, FALSE, FALSE, $modules);
  }