PHPUnit Test header already send by "phpunit-5.7/src/Util/Printer.php"

[rehoehle]

Q	A
Bug report?	yes
Symfony version	3.4.1
PHPUnit	5.7.26

I have a problem after the upgrade to symfony 3.4. I have a login in my unit test. I've implemented the login like the documentation describes here:

https://symfony.com/doc/current/testing/http_authentication.html

I use that code for years now and before 3.4 is was working well.

$session = $client->getContainer()->get('session');
$token = new UsernamePasswordToken($testUser, $testUser->getPassword(), $firewall, $roles);
$session->set('_security_'.$firewall, serialize($token));
$session->save();

$cookie = new Cookie($session->getName(), $session->getId());
$client->getCookieJar()->set($cookie);

if i run the phpunit command over the bridge. I get the following error:

#bin/simple-phpunit
1) Tests\APIBundle\Controller\AutoresponderApiControllerTest::testAutoresponderInsAPI
RuntimeException: Failed to start the session because headers have already been sent by "/xxxx/.phpunit/phpunit-5.7/src/Util/Printer.php" at line 110.

/xxx/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:141
/xxx/vendor/symfony/http-foundation/Session/Storage/NativeSessionStorage.php:302
/xxx/vendor/symfony/http-foundation/Session/Session.php:260
/xxx/vendor/symfony/http-foundation/Session/Session.php:80
/xxx/tests/MainBundle/ExtendedWebTestCase.php:151
/xxx/tests/MainBundle/ExtendedWebTestCase.php:62

without the lines with the login it's working.

[sroze]

Can this be a duplicate of #24524 ?

[rehoehle]

It looks similar. I've testet die options in the ticket with APP_ENV=test but it's already in my PHPUnit XML file. There should be a fix merged to 3.4 it's a bit strange. Perhaps i've made something wrong but i've tried not a lot to find the problem.

[sstok]

FYI. PHPUnit doesn't (by default) overwrite env variables that are already set. You can use the force="true" option to force this (requires PHPUnit v6.3 - sebastianbergmann/phpunit#2723)

[rehoehle]

I've tested my case with PHPUnit 6.3 but same error. The Printer print the buffer on the line 110 and then you have an output before the session is started.

[FlorianKromer]

Symfony version	4.0.2
PHPUnit	6.5

I had got the same error, solved by enabling : session.storage.mock_file
config/packages/tests/framework.yml

framework:
    test: ~
    # Uncomment this section if you're using sessions
    session:
       storage_id: session.storage.mock_file

[rehoehle]

@FlorianKromer ok yes that works. Perhaps some should add a note to the documentation.

[sroze]

@rehoehle that would be nice. Maybe you could submit a PR on the symfony-docs repository, to add a quick note where you believe it would be the best?

[sroze]

The issue can be closed, right?

[rehoehle]

Yes thx i can change the documentation.

[buba71]

Great ! Thanks

[slk500]

can I also set this option on dev env? Without any consequence?