This was something some users were experiencing before. It's specifically related to testing. Do you have a bundle I can work with to investigate further?

I'm a afraid not, my public bundles are just libraries without WebTestCases.
I'll try publishing an example.

By the way I get the same error in a simpler case:

<?php

$client = static::createClient();
$crawler = $client->request('GET', '/');
$this->assertTrue(200 === $client->getResponse()->getStatusCode());

$crawler = $client->request('GET', '/other-page/');
$this->assertTrue(200 === $client->getResponse()->getStatusCode());

Just requesting another page, it gives the error. Does it work with you?

I'm not getting this on a 2.1 project. Might be it's related to migration. Have you changed storage_id in the app/config/config_test.yml to session.storage.mock_file?

Yes I tried both session.storage.filesystem and session.storage.mock_file. Same effect. I'm also using LiipFunctionalTestBundle, I'll try to disable some bundles to locate the problem.

It appears that the problem is related to FOSFacebookBundle, disabling it, the tests work again. I'll try to report the issue there.

Check this PR #3741 and PR #79 on FOSFacebookBundle for more information. There is other issues related to this in the FOSFacebookBundle issues tracker.

I'm facing this issue even though I don't use FOSFacebookBundle, it occurs when I try to authenticate a user in a functional test, it looks related to the cookie I'm setting to fake a previous session, is there anything I'm doing wrong within this test?

https://gist.github.com/3424003

@Drak : any clue?

FriendsOfSymfony/FOSFacebookBundle#183 might address this issue. @iJanki @Drak @bamarni

@gquemener : apparently this can also occurs when not using FOSFacebookBundle.

I've added added my failing test in a symfony standard edition fork : https://github.com/bamarni/symfony-standard/blob/failing-test/src/Acme/DemoBundle/Tests/Controller/DemoControllerTest.php

Is there anything I'm doing wrong? cc @Drak

I've also commited my composer.lock so you can get the exact versions it fails with.

Any progress on this?

I'm facing the same issue, but when following redirects, at https://github.com/symfony/symfony/tree/ee7597576c4244d51d777001e570111ba59d9d72

framework:
    test: true
    profiler:
        only_exceptions: false
    session:
        storage_id: 'session.storage.mock_file'
        handler_id: false

<?php

namespace Ormigo\Bundle\OrmigoBundle\Tests\Controller;

use Ormigo\Tests\AbstractFunctionalTest;

use Ormigo\Model\Banking\BankQuery;

class BankControllerTest extends AbstractFunctionalTest
{
    // ..

    public function testByBicIsRedirectingToShow()
    {
        $bank = BankQuery::create()->findOneByBic('HYVEDEMM488');
        $client = static::createClient();

        $client->request('GET', sprintf('/bank/by-bic/%s.de_DE.json', $bank->getBic()));
        $this->assertRedirect($client->getResponse(), sprintf('/bank/%s.de_DE.json', $bank->getId()));

        $client->followRedirect();
        $this->assertSuccessfulJsonResponse($client->getResponse());  // 500 "Cannot set session ID .."
    }

    // ..
}

Nothing changed for me, I still get the original problems using the latest trees.

I have same problem. I am trying to use Behat with Mink but I think that is not the issue because I see this error when accessing app_test.php from browser too.

Tests are passing when I comment line #54 in TestSessionListener.php.

My composer.json:

{ "require" : {
        "symfony/symfony": "2.1.*",
        "doctrine/orm": ">=2.2.3,<2.4-dev",
        "doctrine/doctrine-bundle": "1.0.*",
        "twig/extensions": "1.0.*",
        "symfony/assetic-bundle": "2.1.*",
        "symfony/swiftmailer-bundle": "2.1.*",
        "symfony/monolog-bundle": "2.1.*",
        "sensio/distribution-bundle": "2.1.*",
        "sensio/framework-extra-bundle": "2.1.*",
        "sensio/generator-bundle": "2.1.*",
        "jms/security-extra-bundle": "1.2.*",
        "jms/di-extra-bundle": "1.1.*",
        "Beryllium/CacheBundle": "dev-master",
        "friendsofsymfony/jsrouting-bundle": "1.0.x-dev",
        "friendsofsymfony/facebook-bundle": "dev-master",
        "friendsofsymfony/user-bundle": "*",
        "stof/doctrine-extensions-bundle": "dev-master",
        "doctrine/doctrine-migrations-bundle": "dev-master",
        "jms/i18n-routing-bundle": "dev-master",
        "behat/behat":  "*",
        "behat/mink":   "*",
        "behat/symfony2-extension":      "*",
        "behat/mink-extension":          "*",
        "behat/mink-goutte-driver":      "*",
        "behat/mink-browserkit-driver":  "*",
        "behat/mink-selenium2-driver":   "*",
        "sanpi/behatch-contexts": "*"
}}```

@Pajk I believe you have the wrong session storage set.

framework:
    session:
        storage_id: 'session.storage.native'
        handler_id: 'session.handler.native_file'

This will work with Behat/Mink on an actual browser.

Thanks for suggestion @havvg but it didn't help. There is a bug in Facebook bundle, [1] fixed it.

[1] FriendsOfSymfony/FOSFacebookBundle#183

Getting the same issue here - no FOSFacebookBundle. Tried both the session configurations mentioned above - didn't help.

Problem occurs when following redirect through the crawler after a login.

I'm getting the same issue with LiipFunctionalTestBundle and the problem lies with this line:

$client->getCookieJar()->set(new Cookie($container->get('session')->getName(), true));

When I remove it in my tests, it works fine. I don't know why yet. Maybe someone else has more insight on this.

An update: it seems that when I configure the session storage name to MOCKSESSID, the name symfony defaults to, it gives me the error. However, If I change the session storage name to anything else in config under framework: session: name:, the tests work again.

I'm getting the same issue with the test case of iJanki without using FOSFacebookBundle. Changing the session name didn't help.

I have this issue even without FOSFacebookBundle.

@phidah would it be possible to set up a simple standard edition project reproducing this issue?

I'd be happy to try and investigate for you if you can setup a project I can just download and get the error with.

@Drak : https://github.com/bamarni/symfony-standard/blob/failing-test/src/Acme/DemoBundle/Tests/Controller/DemoControllerTest.php is waiting for you then :)

@bamarni - Composer throws a wobbly when I try to get the deps. Maybe you can mail me at drak at zikula dot org so we dont pollute the ticket. I'm quite busy but if I can at least get the test env working, then I can get to it. I'm working on some session PRs atm so it's a good time.

@bamarni your test fails because there's no session ID sent with the cookie. Also, session needs to be saved before sending a request (in fact before creating a cookie too). see: bamarni/symfony-standard@317ce94#commitcomment-2953995

@jakzal - do you think you could open a cookbook entry or something in the Symfony2 docs about this? If it's documented once, it might save quite a bit of bother.

@jakzal : thx for the explanations and the code snippet, I understand what was wrong now.

@Drak I will.

closing as symfony/symfony-docs#2468 has been merged now.