Plum\Plum\WorkflowTest::addFilterConvertsCallbackInArrayIntoCallbackConverter PHP Метод

    public function addFilterConvertsCallbackInArrayIntoCallbackConverter()
    {
        $this->workflow->addFilter(['filter' => function ($item) {
            return $item;
        }]);
        $this->assertInstanceOf('Plum\\Plum\\Filter\\FilterInterface', $this->workflow->getFilters()[0]->getFilter());
    }