xdebug breakpoints not working in web requests from BrowserTestBase

run-tests.sh and Simpletest UI will launch all PHPUnit-based tests in a separate process, using exec(). run-tests.sh does this so we can have concurrent test runs.

If you use the phpunit tool, the test won't be running in a separate process unless it's annotated with @runInSeparateProcess or @runTestsInSeparateProcesses.

So for debugging, try making sure there's no process annotation and do this: $ SIMPLETEST_BASE_URL=http://localhost:8888/ ./vendor/bin/phpunit -c core/ --testsuite functional [specify your test here]

Just tested this again and it doesn't work for me in the sub-requests from BTB, I don't think i've ever had it work with BTB but it used to with Simpletest.

class MySampleTest extends BrowserTestBase {
  public function testXdebug() {
    $this->drupalGet('<front>');
  }
}

Breakpoint lands as expected on $this->drupalGet() but never lands in index.php, running with

./app/vendor/bin/phpunit path/to/MySampleTest.php

Inside of Vagrant, with the following vars set.

XDEBUG_CONFIG=idekey=PHPSTORM
PHP_IDE_CONFIG=serverName=d8.dev
SIMPLETEST_BASE_URL=http://d8.dev
SIMPLETEST_DB=mysql://drupal:drupal@localhost/local

Using Drupal 8.4.x at 2dc6d91d60

A workaround I've been using is to set xdebug.remote_autostart = 1 in apache's xdebug configuration whenever I want to debug drupal's code, and use it in cli's xdebug configuration, when I want to debug the test code itself.

With this distinction, I haven't encountered any problems anymore.

That seems to imply then that the environment variables/cookies are being lost in the requests the tests make if autostart works, no?

Just tested this again and it doesn't work for me in the sub-requests from BTB,

Running from run-tests.sh or phpunit?

See #3.

I gave an example of how I was running it in #5

./app/vendor/bin/phpunit path/to/MySampleTest.php

@benjy does it work if you hack sub-request to add xdbug info in PhpStorm?

I tried this, but still no luck. I can see the cookie sent in the request but xdebug never connects.

  public function testDebug() {
    $this->drupalGet('<front>', [
      'query' => [
        'XDEBUG_SESSION_START' => 'PHPSTORM',
      ]
    ]);
  }

I faced the same issue as @benjy said. For all test suites where $runTestInSeparateProcess = TRUE; it ends up in \PHPUnit_Util_PHP_Default::runJob where even if you hack the param passed to the $runtime which is a path to binary the xdebug session will not start. At this point, I copied the $job param value pasted it into a file and save it in docroot and executeed it with PHP CLI and viola it hit the breakpoint in the tests and if you have allowed multiple connections for debugger you can see all the requests.

I think we need to fix phpunit test runner for runTestInSeparateProcess tests.

Some overlap here: #2870194: Ensure that process-isolated tests can use Symfony's PHPunit bridge to catch usages of deprecated code

And a blog post here: http://mile23.com/content/how-phpunit-and-phpunit-bridge-make-false-pass...

Maybe this can be a conversation in Vienna.

It looks like this problem is already solved in the latest version of PHPUnit: https://github.com/sebastianbergmann/phpunit/pull/2548

We are currently still on PHPUnit 4.x though which doesn't have this fix.

It looks like this problem is already solved in the latest version of PHPUnit: https://github.com/sebastianbergmann/phpunit/pull/2548

Sorry that PR is closed unmerged but in which PR this change is merged?

Is this problem the same or related to breakpoints in KernelTestBase not working?

I see no comments for a few years but it seems I am having this same issue.

drupal 8.9
PHP 7.4
phpunit 7.5.20

Is this still an issue for others?
My xdebug breakpoints are working fine for UNIT tests just not the tests extending BrowserTestBase.

Not sure if its helpful but when running UNIT tests I can use the xdebug function xdebug_break() fine but when trying that in the BrowserTestBase functional tests I get an error like "xdebug_break() is an undefined function" seeming to suggest that xdebug is not loaded correctly in that environment.

thanks all

#2850891-23: xdebug breakpoints not working in web requests from BrowserTestBase @penance316 I'm also having this issue on Drupal 8.9, PHP 7.3.25, PHPUnit 7.5.20, and xdebug 3. I'm attempting to run the debug through PHPStorm 2020.3. Breakpoints hit prior to my test (such as if I set them in BrowserTestBase), but as soon as it gets to the test actually running, the breakpoints in my actual test aren't hit. However, PHPUnit does go on to say that my test passes.

Like you, my Unit tests are working fine. I do believe it has to do with separate processes, but PHPStorm is set to 19 max simultaneous connections. It seems that something is being lost here in terms of xdebug being able to connect. Setting xdebug 3 options such as discover_client_host=true or start_with_request=yes has had no effect either.

I'm unsure how widespread this issue is, as I seem to run into the same posts from a few years ago regarding this. I will post any updates I find here.

Tagging this for tomorrow's sprint

Any news?
There is no way to debug tests.