bug symfony#28545 [Console] Send the right exit code to console.terminate listeners (mpdude)

This PR was squashed before being merged into the 2.8 branch (closes symfony#28545).

Discussion
----------

[Console] Send the right exit code to console.terminate listeners

| Q             | A
| ------------- | ---
| Branch?       | 2.8
| Bug fix?      | yes
| New feature?  | no
| BC breaks?    | no
| Deprecations? | no
| Tests pass?   | yes
| Fixed tickets |
| License       | MIT
| Doc PR        |

When a Console command throws an exception without a status code, `Application::run()` takes care of setting the exit code to `1` when the exception does not provide a code itself.

This happens slightly too late, as `console.terminate` event listeners that are called from within `Application::doRunCommand()` are given the plain exeception code, before this conversion.

The result is that `console.*` event listeners that you might be using to log exit code e. g. for cron jobs will see a `0` code instead of the real value used to terminate the script.

***Todo:***

- [x] Make sure we've got tests covering this, i. e. do not mock out `doRunCommand()`.

Commits
-------

b90a3f1 [Console] Send the right exit code to console.terminate listeners

Author: Robin Chalas

src/Symfony/Component/Console/Application.php

@@ -129,15 +129,7 @@ public function run(InputInterface $input = null, OutputInterface $output = null
                 $this->renderException($e, $output);
             }
 
-            $exitCode = $e->getCode();
-            if (is_numeric($exitCode)) {
-                $exitCode = (int) $exitCode;
-                if (0 === $exitCode) {
-                    $exitCode = 1;
-                }
-            } else {
-                $exitCode = 1;
-            }
+            $exitCode = $this->getExitCodeForThrowable($e);
         }
 
         if ($this->autoExit) {
@@ -873,7 +865,8 @@ protected function doRunCommand(Command $command, InputInterface $input, OutputI
             if ($x !== $event->getException()) {
                 $e = $event->getException();
             }
-            $exitCode = $e->getCode();
+
+            $exitCode = $this->getExitCodeForThrowable($e);
         }
 
         $event = new ConsoleTerminateEvent($command, $input, $output, $exitCode);
@@ -1148,4 +1141,26 @@ private function init()
             $this->add($command);
         }
     }
+
+    /**
+     * Type hint omitted to be PHP5 compatible.
+     *
+     * @param \Exception|\Throwable $throwable
+     *
+     * @return int
+     */
+    private function getExitCodeForThrowable($throwable)
+    {
+        $exitCode = $throwable->getCode();
+        if (is_numeric($exitCode)) {
+            $exitCode = (int) $exitCode;
+            if (0 === $exitCode) {
+                $exitCode = 1;
+            }
+        } else {
+            $exitCode = 1;
+        }
+
+        return $exitCode;
+    }
 }

src/Symfony/Component/Console/Tests/ApplicationTest.php

@@ -774,6 +774,31 @@ public function testRunReturnsIntegerExitCode()
         $this->assertSame(4, $exitCode, '->run() returns integer exit code extracted from raised exception');
     }
 
+    public function testRunDispatchesIntegerExitCode()
+    {
+        $passedRightValue = false;
+
+        // We can assume here that some other test asserts that the event is dispatched at all
+        $dispatcher = new EventDispatcher();
+        $self = $this;
+        $dispatcher->addListener('console.terminate', function (ConsoleTerminateEvent $event) use ($self, &$passedRightValue) {
+            $passedRightValue = (4 === $event->getExitCode());
+        });
+
+        $application = new Application();
+        $application->setDispatcher($dispatcher);
+        $application->setAutoExit(false);
+
+        $application->register('test')->setCode(function (InputInterface $input, OutputInterface $output) {
+            throw new \Exception('', 4);
+        });
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'test'));
+
+        $this->assertTrue($passedRightValue, '-> exit code 4 was passed in the console.terminate event');
+    }
+
     public function testRunReturnsExitCodeOneForExceptionCodeZero()
     {
         $exception = new \Exception('', 0);
@@ -789,6 +814,31 @@ public function testRunReturnsExitCodeOneForExceptionCodeZero()
         $this->assertSame(1, $exitCode, '->run() returns exit code 1 when exception code is 0');
     }
 
+    public function testRunDispatchesExitCodeOneForExceptionCodeZero()
+    {
+        $passedRightValue = false;
+
+        // We can assume here that some other test asserts that the event is dispatched at all
+        $dispatcher = new EventDispatcher();
+        $self = $this;
+        $dispatcher->addListener('console.terminate', function (ConsoleTerminateEvent $event) use ($self, &$passedRightValue) {
+            $passedRightValue = (1 === $event->getExitCode());
+        });
+
+        $application = new Application();
+        $application->setDispatcher($dispatcher);
+        $application->setAutoExit(false);
+
+        $application->register('test')->setCode(function (InputInterface $input, OutputInterface $output) {
+            throw new \Exception();
+        });
+
+        $tester = new ApplicationTester($application);
+        $tester->run(array('command' => 'test'));
+
+        $this->assertTrue($passedRightValue, '-> exit code 1 was passed in the console.terminate event');
+    }
+
     /**
      * @expectedException \LogicException
      * @expectedExceptionMessage An option with shortcut "e" already exists.