feature #32418 [Console] Added Application::reset() (lyrixx)

This PR was merged into the 4.4 branch.

Discussion
----------

[Console] Added Application::reset()

| Q             | A
| ------------- | ---
| Branch?       | 4.4
| Bug fix?      | no
| New feature?  | yes
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

Symfony leaks a lot in CLI when using the EventDispatcher. I'm working on it.

But instead of fixing the root cause, it can be legit to go quick and to reset all services.
So IMHO, this services should be exposed, and always available

Commits
-------

15ba579 [Console] Added Application::reset()

src/Symfony/Bundle/FrameworkBundle/Console/Application.php

@@ -55,6 +55,16 @@ public function getKernel()
         return $this->kernel;
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+        if ($this->kernel->getContainer()->has('services_resetter')) {
+            $this->kernel->getContainer()->get('services_resetter')->reset();
+        }
+    }
+
     /**
      * Runs the current application.
      *

src/Symfony/Component/Console/Application.php

@@ -45,6 +45,7 @@
 use Symfony\Component\ErrorCatcher\Exception\FatalThrowableError;
 use Symfony\Component\EventDispatcher\EventDispatcherInterface;
 use Symfony\Component\EventDispatcher\LegacyEventDispatcherProxy;
+use Symfony\Contracts\Service\ResetInterface;
 
 /**
  * An Application is the container for a collection of commands.
@@ -61,7 +62,7 @@
  *
  * @author Fabien Potencier <fabien@symfony.com>
  */
-class Application
+class Application implements ResetInterface
 {
     private $commands = [];
     private $wantHelps = false;
@@ -276,6 +277,13 @@ public function doRun(InputInterface $input, OutputInterface $output)
         return $exitCode;
     }
 
+    /**
+     * {@inheritdoc}
+     */
+    public function reset()
+    {
+    }
+
     public function setHelperSet(HelperSet $helperSet)
     {
         $this->helperSet = $helperSet;

src/Symfony/Component/Console/CHANGELOG.md

@@ -6,6 +6,7 @@ CHANGELOG
 
  * added `Question::setTrimmable` default to true to allow the answer to be trimmed
  * added method `preventRedrawFasterThan()` and `forceRedrawSlowerThan()` on `ProgressBar`
+ * `Application` implements `ResetInterface`
 
 4.3.0
 -----
@@ -38,7 +39,7 @@ CHANGELOG
 
  * `OutputFormatter` throws an exception when unknown options are used
  * removed `QuestionHelper::setInputStream()/getInputStream()`
- * removed `Application::getTerminalWidth()/getTerminalHeight()` and 
+ * removed `Application::getTerminalWidth()/getTerminalHeight()` and
   `Application::setTerminalDimensions()/getTerminalDimensions()`
 * removed `ConsoleExceptionEvent`
 * removed `ConsoleEvents::EXCEPTION`
@@ -64,7 +65,7 @@ CHANGELOG
   with value optional explicitly passed empty
 * added console.error event to catch exceptions thrown by other listeners
 * deprecated console.exception event in favor of console.error
-* added ability to handle `CommandNotFoundException` through the 
+* added ability to handle `CommandNotFoundException` through the
  `console.error` event
 * deprecated default validation in `SymfonyQuestionHelper::ask`
 
@@ -80,7 +81,7 @@ CHANGELOG
 -----
 
  * added truncate method to FormatterHelper
- * added setColumnWidth(s) method to Table 
+ * added setColumnWidth(s) method to Table
 
 2.8.3
 -----