Is it possible to debug PhpUnit tests with --process-isolation option?

For unittest

class SampleTest extends PHPUnit_Framework_TestCase
    public function testBreakpoint()
        $a = 18;

with breakpoint on line 5 "$a = 18;",
Xdebug v2.1.0,
PHPUnit 3.6.10,
PHP 5.3.6,
PHPStorm 3.0.3.

Running unittest with NO --process-isolation option in 'Test Runner options' in 'Run/Debug Configuration ' by Shift-F9 'Debug' stops execution on line 5, as expected.

Running the same  'Run/Debug Configuration '  WITH --process-isolation option in 'Test Runner options' by Shift-F9 'Debug' does not stop execution on line 5.

The option --process-isolation runs every testcase in new process using 'proc_open' in runJob function in

Is it possible to debug child process created by PhpUnit  using Xdebug and PhpStorm?


Hello Alex,

Unfortunately it haven't not supported yet. Please vote for the following issue -

Thank you for feedback!

Thank you Nikolay for quick and exact answer.
The issue is upvoted. Hope to see it in V4.


I am facing the same problem, the mentioned issue seems to be fixed but debugging of isolated process still ignores break points. As before, they work fine without process isolation. Is there a way to make this work?


Since it would be new/isolated process .. the xdebug debug status may not propagate there.

See if configuring xdebug with xdebug.remote_autostart = 1 will do any better  (so that xdebug attempts to debug every single request) -- it should.




For others who might be wondering, make sure to Run > Start Listen for PHP Debug Connections.


Hi! 6 years later, this doesn't work. The issue I am experiencing now is that, although I definitely "Start Listening For PHP Debug Connections", and set `xdebug.remote_autostart` to `1`, this doesn't matter because the `xdebug` extension does not appear to be enabled in the child process. Looks like it's the `-dzend_extension=/usr/local/lib/php/extensions/no-debug-non-zts-20151012/` (correctly configured, as PHPStorm recognizes this in the interpreter settings) is what doesn't propagate into the child process. I know this because I output `get_loaded_extensions()` in the test code, and it doesn't include `xdebug`, while if I do it while stepping through PHPUnit's code - it does.

Any ideas?


Would it be possible to show the xdebug section from your php.ini file? (just share the "php -i" output)

What is important here -- do you "zend_extension" configured in php.ini?

(for the reference purposes:


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