public function getBootstrap()
{
if (is_null($this->_bootstrap)) {
if (file_exists($this->getTestDirectory() . '/TestHelper.php')) {
return $this->getTestDirectory() . '/TestHelper.php';
} elseif (file_exists($this->getTestDirectory() . '/Bootstrap.php')) {
return $this->getTestDirectory() . '/Bootstrap.php';
}
}
return $this->_bootstrap;
}