public function testExtractionOfNotNull()
{
$data = array('plugin' => null, 'admin' => false, 'controller' => 'posts', 'action' => 'index', 1, 'whatever');
$expected = array('controller' => 'posts', 'action' => 'index', 1, 'whatever');
$result = Set::extract($data, '/');
$this->assertIdentical($expected, $result);
}