dnspec2.php

<?php

namespace Dn;

class StringCalculatorSpec
{
    public function specification($feature)
    {
        $feature('it_is_initializable', function ($it) {
            $it->shouldHaveType('StringCalculator');
        });

        $feature['it_is_initializable'] = function ($it) {
            $it->shouldHaveType('StringCalculator');
        };

        $feature->it_is_initializable = function ($it) {
            $it->shouldHaveType('StringCalculator');
        };
    }
}