[1.x] Fixes sharing "Carbon" state shared between requests (#552)

* Fixes shared Carbon Locale between requests

* Apply fixes from StyleCI

Co-authored-by: StyleCI Bot <bot@styleci.io>

src/Listeners/FlushLocaleState.php

@@ -2,6 +2,8 @@
 
 namespace Laravel\Octane\Listeners;
 
+use Carbon\Laravel\ServiceProvider as CarbonServiceProvider;
+
 class FlushLocaleState
 {
     /**
@@ -18,5 +20,7 @@ public function handle($event): void
             $translator->setLocale($config->get('app.locale'));
             $translator->setFallback($config->get('app.fallback_locale'));
         });
+
+        (new CarbonServiceProvider($event->app))->updateLocale();
     }
 }

tests/LocaleStateTest.php

@@ -2,6 +2,7 @@
 
 namespace Laravel\Octane\Tests;
 
+use Carbon\Carbon;
 use Illuminate\Foundation\Application;
 use Illuminate\Http\Request;
 
@@ -29,4 +30,27 @@ public function test_translator_state_is_reset_across_subsequent_requests()
         $this->assertEquals('en', $client->responses[1]->getContent());
         $this->assertEquals('ms', $client->responses[2]->getContent());
     }
+
+    public function test_carbon_state_is_reset_across_subsequent_requests()
+    {
+        [$app, $worker, $client] = $this->createOctaneContext([
+            Request::create('/test-locale', 'GET'), // should be "en"
+            Request::create('/test-locale?locale=nl', 'GET'),
+            Request::create('/test-locale', 'GET'), // should be "en", and not "nl"...
+        ]);
+
+        $app['router']->get('/test-locale', function (Application $app, Request $request) {
+            if ($request->has('locale')) {
+                Carbon::setLocale($request->query('locale'));
+            }
+
+            return now()->getLocale();
+        });
+
+        $worker->run();
+
+        $this->assertEquals('en', $client->responses[0]->getContent());
+        $this->assertEquals('nl', $client->responses[1]->getContent());
+        $this->assertEquals('en', $client->responses[2]->getContent());
+    }
 }