mageekguy\atoum\asserters\iterator::isEmpty PHP Метод

    public function isEmpty($failMessage = null)
    {
        if (($actual = iterator_count($this->valueIsSet()->value)) === 0) {
            $this->pass();
        } else {
            $this->fail($failMessage ?: $this->getLocale()->_('%s is not empty', $this, $actual));
        }
        return $this;
    }