lithium\tests\cases\g11n\LocaleTest::testPreferredEmpty PHP Method

    public function testPreferredEmpty()
    {
        $available = array('fr', 'de');
        $request = new ActionRequest(array('env' => array('HTTP_ACCEPT_LANGUAGE' => '')));
        $result = Locale::preferred($request, $available);
        $this->assertNull($result);
    }