[HttpFoundation][FrameworkBundle] Reset Request's formats using the service resetter

Author: nicolas-grekas

RequestStack.php

@@ -106,4 +106,11 @@ public function getSession(): SessionInterface
 
         throw new SessionNotFoundException();
     }
+
+    public function resetRequestFormats(): void
+    {
+        static $resetRequestFormats;
+        $resetRequestFormats ??= \Closure::bind(static fn () => self::$formats = null, null, Request::class);
+        $resetRequestFormats();
+    }
 }

Tests/RequestStackTest.php

@@ -67,4 +67,18 @@ public function testGetParentRequest()
         $requestStack->push($secondSubRequest);
         $this->assertSame($firstSubRequest, $requestStack->getParentRequest());
     }
+
+    public function testResetRequestFormats()
+    {
+        $requestStack = new RequestStack();
+
+        $request = Request::create('/foo');
+        $request->setFormat('foo', ['application/foo']);
+
+        $this->assertSame(['application/foo'], $request->getMimeTypes('foo'));
+
+        $requestStack->resetRequestFormats();
+
+        $this->assertSame([], $request->getMimeTypes('foo'));
+    }
 }