Confusing docs about submitting forms in functional tests

[javiereguiluz]

In this page (https://symfony.com/doc/current/testing.html#forms) you can find this example:

$form = $buttonCrawlerNode->form(array(
    'name'              => 'Fabien',
    'my_form[subject]'  => 'Symfony rocks!',
));

Is the use of name instead of my_form[name] ... or the use of my_form[subject] instead of subject done on purpose? It's a bit confusing to me. Thanks!

[xabbuh]

The array keys must match the value of the name attribute of the corresponding form. So if we assume the rendering is based on a Symfony form type (which we IMO can), we will usually have names that follow the `my_form[subject] pattern. I think we should just update the other keys accordingly for consistency.

[javiereguiluz]

Fixed by #9854.