Crunz\Event::sundays PHP Метод

    public function sundays()
    {
        return $this->days(0);
    }

 public function testIsDue()
 {
     Carbon::setTestNow(Carbon::create(2015, 4, 12, 0, 0, 0));
     $e = new Event($this->id, 'php foo');
     $this->assertTrue($e->sundays()->isDue());
     $e = new Event($this->id, 'php bar');
     $this->assertEquals('0 19 * * 6 *', $e->saturdays()->at('19:00')->timezone('EST')->getExpression());
     $this->assertTrue($e->isDue());
 }