public function testCaching() {
		$data = array('catalog' => 'Katalog');
		Catalog::write('runtime', 'message', 'de', $data, array('scope' => 'foo'));

		$this->assertFalse(Message::cache());

		$result = Message::translate('catalog', array('locale' => 'de', 'scope' => 'foo'));
		$this->assertEqual('Katalog', $result);

		$cache = Message::cache();
		$this->assertEqual('Katalog', $cache['foo']['de']['catalog']);

		Message::cache(false);
		$this->assertFalse(Message::cache());

		Message::cache(array('foo' => array('de' => array('catalog' => '<Katalog>'))));
		$result = Message::translate('catalog', array('locale' => 'de', 'scope' => 'foo'));
		$this->assertEqual('<Katalog>', $result);

		$options = array('locale' => 'de', 'scope' => 'foo', 'count' => 2);
		$this->assertEqual('<Katalog>', Message::translate('catalog', $options));

		Message::cache(false);
		Message::cache(array('foo' => array('de' => array('catalog' => array('<Katalog>')))));
		$this->assertNull(Message::translate('catalog', $options));
	}