PHPUnit fails with process isolation but passes without that flag

Question

My tests are running properly and all green when I run them without any particular flag:

phpunit --configuration /home/vagrant/code/phpunit.xml /home/vagrant/code/tests

When I enable process isolation, the tests are failing:

phpunit --configuration /home/vagrant/code/phpunit.xml /home/vagrant/code/tests --process-isolation

The error looks like this:

PHP Fatal error:  Uncaught RuntimeException: A facade root has not been set. in /home/vagrant/code/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php:234
Stack trace:
#0 /home/vagrant/code/routes/web.php(6): Illuminate\Support\Facades\Facade::__callStatic('get', Array)
#1 Standard input code(1653): require_once('/home/vagrant/c...')
#2 {main}
  thrown in /home/vagrant/code/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php on line 234
Fatal error: Uncaught RuntimeException: A facade root has not been set. in /home/vagrant/code/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php:234
Stack trace:
#0 /home/vagrant/code/routes/web.php(6): Illuminate\Support\Facades\Facade::__callStatic('get', Array)
#1 Standard input code(1653): require_once('/home/vagrant/c...')
#2 {main}
  thrown in /home/vagrant/code/vendor/laravel/framework/src/Illuminate/Support/Facades/Facade.php on line 234

I already tried a few things from the 3 or 4 threads I found on Laracast or StackOverflow regarding that kind of exception but nothing works yet:

Excluding routes from PHPUnit.xml
Running phpunit from vendor/bin or the one included in the system
etc.

Any idea about where to look for or check? I am running out of ideas.

Using latest Laravel 5.8 and PHPUnit 8.0.6

Have you tried to run them on your host machine but not in VM? — Tarasovych, May 22 '19 at 07:08
May I ask you to try write a couple of dummy tests (something like `$this->assertTrue(true)`) and see if they run with `--process-isolation`? — Tarasovych, May 22 '19 at 13:09
Can you try to disable global state with calling $this->setPreserveGlobalState(false); in the setUp() method? — shock_gone_wild, May 23 '19 at 05:21
Can you provide a simple test that fails with `--process-isolation`? — Jonas Staudenmeir, May 24 '19 at 15:55
No config:cache is done. `$this->setPreserveGlobalState(false);` does not change anything (same result). — Vincent Mimoun-Prat, May 28 '19 at 09:16
@VincentMimoun-Prat please check if this could help you. Process Isolation - https://stackoverflow.com/questions/10077400/phpunit-not-continuing-with-tests-after-fatal-error-when-using-process-isolati For laravel facade settings with unit test - https://stackoverflow.com/questions/49818102/laravel-5-6-uncaught-runtimeexception-a-facade-root-has-not-been-set — Vikash Pathak, May 28 '19 at 09:35
From the links you provide, I could suspect that maybe PHPUnit tries to load route files and execute them before the app is setup. Which would call the Route:: facade and cause that message. — Vincent Mimoun-Prat, May 28 '19 at 09:55

score 0 · Answer 1 · answered May 11 '19 at 09:07

First thing I would try is: run the failing test alone rather than against the entire tests folder.

Next, I would make sure if the failing test is calling setFacadeApplication() via createApplication() or something similar. For instance, if setUp() doesn't call its parent setUp(), the static variable $app in Facade might not be set. That's the situation the RuntimeException message says.

protected function setUp() // in your test case class
{
    // parent::setUp(); // it's necessary
}

Since it is static variable, once it's set its value would stay available among all the test cases without --process-isolation.

Running the failing test alone, with process isolation ON = it passes. The setUp functions are proper. — Vincent Mimoun-Prat, May 15 '19 at 18:56

score 0 · Answer 2 · answered May 28 '19 at 11:22

I faced the same error. I fixed it by creating a new app container and then binding it to the Facade.

use \Illuminate\Container\Container as Container;
use \Illuminate\Support\Facades\Facade as Facade;

/**
* Setup a new app instance container
* 
* @var Illuminate\Container\Container
*/
$app = new Container();
$app->singleton('app', 'Illuminate\Container\Container');

/**
* Set $app as FacadeApplication handler
*/
Facade::setFacadeApplication($app);

in lumen: bootstrap/app.php

$app->withFacades();

PHPUnit fails with process isolation but passes without that flag

2 Answers2