FileFormField example

namespace Symfony\Component\DomCrawler\Tests\Field;

use Symfony\Component\DomCrawler\Field\FileFormField;

class FileFormFieldTest extends FormFieldTestCase
{
    public function testInitialize()
    {
        $node = $this->createNode('input', '', ['type' => 'file']);
        $field = new FileFormField($node);

        $this->assertEquals(['name' => '', 'type' => '', 'tmp_name' => '', 'error' => \UPLOAD_ERR_NO_FILE, 'size' => 0], $field->getValue(), '->initialize() sets the value of the field to no file uploaded');

        $node = $this->createNode('textarea', '');
        try {
            new FileFormField($node);
            $this->fail('->initialize() throws a \LogicException if the node is not an input field');
        } catch (\LogicException $e) {
            $this->assertTrue(true, '->initialize() throws a \LogicException if the node is not an input field');
        }

        

if ('select' == $nodeName || 'input' == $nodeName && 'checkbox' == strtolower($node->getAttribute('type'))) {
            $this->set(new Field\ChoiceFormField($node));
        } elseif ('input' == $nodeName && 'radio' == strtolower($node->getAttribute('type'))) {
            // there may be other fields with the same name that are no choice             // fields already registered (see https://github.com/symfony/symfony/issues/11689)             if ($this->has($node->getAttribute('name')) && $this->get($node->getAttribute('name')) instanceof ChoiceFormField) {
                $this->get($node->getAttribute('name'))->addChoice($node);
            } else {
                $this->set(new Field\ChoiceFormField($node));
            }
        } elseif ('input' == $nodeName && 'file' == strtolower($node->getAttribute('type'))) {
            $this->set(new Field\FileFormField($node));
        } elseif ('input' == $nodeName && !\in_array(strtolower($node->getAttribute('type')), ['submit', 'button', 'image'])) {
            $this->set(new Field\InputFormField($node));
        } elseif ('textarea' == $nodeName) {
            $this->set(new Field\TextareaFormField($node));
        }
    }
}