symfony unit tests: add/modify form action

I have a form, without action (is submitted with javascript) and I'm trying to write a unit test for it, but it fails because "action" attribute is missing:

InvalidArgumentException : Current URI must be an absolute URL ("").

There is a way to do add it in unit tests or modify the html content using the crawler?

<form id="form_search_page">
    <input type="text" name="keyword" value="" />
    <button type="submit" name="searchBtn" id="searchBtn">Search</button>

$client = $this->makeClient(true);
$url = $this->createRoute("page_index"));
$crawler = $client->request('GET', $url);
$response = $client->getResponse();

$form = $crawler->filter('#form_search_page')->form();
$params = array(
    "form[text]" => "dummy title"
$crawler = $client->submit($form);
$response = $client->getResponse();
$this->assertGreaterThan(0, $crawler->filter('.pages li')->count());


You could test a ajax POST form submit as example above (Assuming a form with a CSRF token):

$crawler = $this->client->request('GET', $url);

// retrieves the form token
$token = $crawler->filter('[name="myform[_token]"]')->attr("value");

$posturl = $this->client->getContainer()->get('router')->generate("the-url-of-the-submit");
// makes the POST request
$crawler = $this->client->request('POST', $posturl, array(
    'myform' => array(
        '_token' => $token
        'HTTP_X-Requested-With' => 'XMLHttpRequest',


Hope this help

I found the solution:

    ->reduce(function (Crawler $form) use ($router) {
        $url = $router->generate('search_page', array(), true);

        $node = $form->getNode(0);
        if (!$node->hasAttribute('action')){
            $node->setAttribute('action', $url);
            $node->setAttribute('method', 'POST');
            return true;
        return false;

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