public function testAddingInvalidRules()
{
$before = array(Inflector::rules('singular'), Inflector::rules('plural'), Inflector::rules('transliteration'));
$this->assertNull(Inflector::rules('foo'));
$this->assertIdentical($before, array(Inflector::rules('singular'), Inflector::rules('plural'), Inflector::rules('transliteration')));
}