interchange = new HTMLPurifier_ConfigSchema_Interchange(); if (empty($this->validator)) { $class_to_test = substr(get_class($this), 0, -4); $this->validator = new $class_to_test; } } public function teardown() { unset($this->validator, $this->interchange); } protected function expectSchemaException($msg) { $this->expectException(new HTMLPurifier_ConfigSchema_Exception($msg)); } }