diff --git a/src/Component/Tests/State/Processor/FlashProcessorTest.php b/src/Component/Tests/State/Processor/FlashProcessorTest.php
new file mode 100644
index 000000000..488cf8a1b
--- /dev/null
+++ b/src/Component/Tests/State/Processor/FlashProcessorTest.php
@@ -0,0 +1,138 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Component\Resource\Tests\State\Processor;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
+use Prophecy\Prophecy\ObjectProphecy;
+use Sylius\Resource\Context\Context;
+use Sylius\Resource\Context\Option\RequestOption;
+use Sylius\Resource\Metadata\HttpOperation;
+use Sylius\Resource\State\Processor\FlashProcessor;
+use Sylius\Resource\State\ProcessorInterface;
+use Sylius\Resource\Symfony\Session\Flash\FlashHelperInterface;
+use Symfony\Component\HttpFoundation\ParameterBag;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+
+final class FlashProcessorTest extends TestCase
+{
+    use ProphecyTrait;
+
+    private ProcessorInterface|ObjectProphecy $decorated;
+
+    private FlashHelperInterface|ObjectProphecy $flashHelper;
+
+    private FlashProcessor $flashProcessor;
+
+    protected function setUp(): void
+    {
+        $this->decorated = $this->prophesize(ProcessorInterface::class);
+        $this->flashHelper = $this->prophesize(FlashHelperInterface::class);
+
+        $this->flashProcessor = new FlashProcessor(
+            $this->decorated->reveal(),
+            $this->flashHelper->reveal(),
+        );
+    }
+
+    /** @test */
+    public function it_adds_flash(): void
+    {
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $request->isMethodSafe()->willReturn(false);
+
+        $request->attributes = $attributes;
+
+        $attributes->getBoolean('is_valid', true)->willReturn(true);
+
+        $context = new Context(new RequestOption($request->reveal()));
+
+        $this->decorated->process(['foo' => 'fighters'], $operation, $context)->willReturn(['foo' => 'fighters'])->shouldBeCalled();
+
+        $this->flashHelper->addSuccessFlash($operation, $context)->shouldBeCalled();
+
+        $this->flashProcessor->process(['foo' => 'fighters'], $operation->reveal(), $context);
+    }
+
+    /** @test */
+    public function it_does_nothing_when_controller_result_is_a_response(): void
+    {
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+        $response = $this->prophesize(Response::class);
+
+        $request->isMethodSafe()->willReturn(false)->shouldNotBeCalled();
+
+        $request->attributes = $attributes;
+
+        $attributes->getBoolean('is_valid', true)->willReturn(true)->shouldNotBeCalled();
+
+        $context = new Context(new RequestOption($request->reveal()));
+
+        $this->decorated->process($response, $operation, $context)->willReturn($response)->shouldBeCalled();
+
+        $this->flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
+
+        $this->flashProcessor->process($response->reveal(), $operation->reveal(), $context);
+    }
+
+    /** @test */
+    public function it_does_nothing_when_method_is_safe(): void
+    {
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $request->isMethodSafe()->willReturn(true)->shouldBeCalled();
+
+        $request->attributes = $attributes;
+
+        $attributes->getBoolean('is_valid', true)->willReturn(true);
+
+        $context = new Context(new RequestOption($request->reveal()));
+
+        $this->decorated->process(['foo' => 'fighters'], $operation, $context)->willReturn(['foo' => 'fighters'])->shouldBeCalled();
+
+        $this->flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
+
+        $this->flashProcessor->process(['foo' => 'fighters'], $operation->reveal(), $context);
+    }
+
+    /** @test */
+    public function it_does_nothing_when_validation_has_failed(): void
+    {
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $request->isMethodSafe()->willReturn(false);
+
+        $request->attributes = $attributes;
+
+        $attributes->getBoolean('is_valid', true)->willReturn(false)->shouldBeCalled();
+
+        $context = new Context(new RequestOption($request->reveal()));
+
+        $this->decorated->process(['foo' => 'fighters'], $operation, $context)->willReturn(['foo' => 'fighters'])->shouldBeCalled();
+
+        $this->flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
+
+        $this->flashProcessor->process(['foo' => 'fighters'], $operation->reveal(), $context);
+    }
+}
diff --git a/src/Component/Tests/State/Processor/RespondProcessorTest.php b/src/Component/Tests/State/Processor/RespondProcessorTest.php
new file mode 100644
index 000000000..3ea1c3cc2
--- /dev/null
+++ b/src/Component/Tests/State/Processor/RespondProcessorTest.php
@@ -0,0 +1,88 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace State\Processor;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
+use Prophecy\Prophecy\ObjectProphecy;
+use Sylius\Component\Resource\src\State\Processor\RespondProcessor;
+use Sylius\Resource\Context\Context;
+use Sylius\Resource\Context\Initiator\RequestContextInitiatorInterface;
+use Sylius\Resource\Metadata\HttpOperation;
+use Sylius\Resource\State\ProcessorInterface;
+use Sylius\Resource\State\ResponderInterface;
+use Symfony\Component\HttpFoundation\Response;
+use Webmozart\Assert\Assert;
+
+final class RespondProcessorTest extends TestCase
+{
+    use ProphecyTrait;
+
+    private ProcessorInterface|ObjectProphecy $decorated;
+
+    private RequestContextInitiatorInterface|ObjectProphecy $contextInitiator;
+
+    private ResponderInterface|ObjectProphecy $responder;
+
+    private RespondProcessor $respondProcessor;
+
+    protected function setUp(): void
+    {
+        $this->decorated = $this->prophesize(ProcessorInterface::class);
+        $this->responder = $this->prophesize(ResponderInterface::class);
+
+        $this->respondProcessor = new RespondProcessor(
+            $this->decorated->reveal(),
+            $this->responder->reveal(),
+        );
+    }
+
+    /** @test */
+    public function it_returns_a_response(): void
+    {
+        $response = $this->prophesize(Response::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $context = new Context();
+
+        $this->responder->respond(['foo' => 'fighters'], $operation, $context)
+            ->willReturn($response)
+            ->shouldBeCalled()
+        ;
+
+        $this->decorated->process(['foo' => 'fighters'], $operation, $context)->willReturn(['foo' => 'fighters'])->shouldBeCalled();
+
+        $data = $this->respondProcessor->process(['foo' => 'fighters'], $operation->reveal(), $context);
+        Assert::eq($data, $response->reveal());
+    }
+
+    /** @test */
+    public function it_does_nothing_when_data_is_a_response(): void
+    {
+        $response = $this->prophesize(Response::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $context = new Context();
+
+        $this->decorated->process($response, $operation, $context)->willReturn($response)->shouldBeCalled();
+
+        $this->responder->respond($response, $operation, $context)
+            ->willReturn($response)
+            ->shouldNotBeCalled()
+        ;
+
+        $data = $this->respondProcessor->process($response, $operation->reveal(), $context);
+        Assert::eq($data, $response->reveal());
+    }
+}
diff --git a/src/Component/Tests/Symfony/EventListener/FlashListenerTest.php b/src/Component/Tests/Symfony/EventListener/FlashListenerTest.php
new file mode 100644
index 000000000..70348470d
--- /dev/null
+++ b/src/Component/Tests/Symfony/EventListener/FlashListenerTest.php
@@ -0,0 +1,185 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Component\Resource\Tests\Symfony\EventListener;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
+use Prophecy\Prophecy\ObjectProphecy;
+use Sylius\Resource\Context\Context;
+use Sylius\Resource\Context\Initiator\RequestContextInitiatorInterface;
+use Sylius\Resource\Metadata\HttpOperation;
+use Sylius\Resource\Metadata\Operation\HttpOperationInitiatorInterface;
+use Sylius\Resource\Symfony\EventListener\FlashListener;
+use Sylius\Resource\Symfony\Session\Flash\FlashHelperInterface;
+use Symfony\Component\HttpFoundation\ParameterBag;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Event\ViewEvent;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Symfony\Component\HttpKernel\KernelInterface;
+
+final class FlashListenerTest extends TestCase
+{
+    use ProphecyTrait;
+
+    private HttpOperationInitiatorInterface|ObjectProphecy $operationInitiator;
+
+    private RequestContextInitiatorInterface|ObjectProphecy $requestContextInitiator;
+
+    private FlashHelperInterface|ObjectProphecy $flashHelper;
+
+    private FlashListener $flashListener;
+
+    protected function setUp(): void
+    {
+        $this->operationInitiator = $this->prophesize(HttpOperationInitiatorInterface::class);
+        $this->requestContextInitiator = $this->prophesize(RequestContextInitiatorInterface::class);
+        $this->flashHelper = $this->prophesize(FlashHelperInterface::class);
+
+        $this->flashListener = new FlashListener(
+            $this->operationInitiator->reveal(),
+            $this->requestContextInitiator->reveal(),
+            $this->flashHelper->reveal(),
+        );
+    }
+
+    /** @test */
+    public function it_adds_flash(): void
+    {
+        $kernel = $this->prophesize(KernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $event = new ViewEvent(
+            $kernel->reveal(),
+            $request->reveal(),
+            HttpKernelInterface::MAIN_REQUEST,
+            ['foo' => 'fighters'],
+        );
+
+        $request->isMethodSafe()->willReturn(false);
+
+        $request->attributes = $attributes;
+
+        $attributes->getBoolean('is_valid', true)->willReturn(true);
+
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
+
+        $context = new Context();
+
+        $this->requestContextInitiator->initializeContext($request)->willReturn($context);
+
+        $this->flashHelper->addSuccessFlash($operation, $context)->shouldBeCalled();
+
+        $this->flashListener->onKernelView($event);
+    }
+
+    /** @test */
+    public function it_does_nothing_when_controller_result_is_a_response(): void
+    {
+        $kernel = $this->prophesize(KernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+        $response = $this->prophesize(Response::class);
+
+        $event = new ViewEvent(
+            $kernel->reveal(),
+            $request->reveal(),
+            HttpKernelInterface::MAIN_REQUEST,
+            $response->reveal(),
+        );
+
+        $request->isMethodSafe()->willReturn(false)->shouldNotBeCalled();
+
+        $request->attributes = $attributes;
+
+        $attributes->getBoolean('is_valid', true)->willReturn(true)->shouldNotBeCalled();
+
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
+
+        $context = new Context();
+
+        $this->requestContextInitiator->initializeContext($request)->willReturn($context);
+
+        $this->flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
+
+        $this->flashListener->onKernelView($event);
+    }
+
+    /** @test */
+    public function it_does_nothing_when_method_is_safe(): void
+    {
+        $kernel = $this->prophesize(KernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $event = new ViewEvent(
+            $kernel->reveal(),
+            $request->reveal(),
+            HttpKernelInterface::MAIN_REQUEST,
+            ['foo' => 'fighters'],
+        );
+
+        $request->isMethodSafe()->willReturn(true)->shouldBeCalled();
+
+        $request->attributes = $attributes;
+
+        $attributes->getBoolean('is_valid', true)->willReturn(true);
+
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
+
+        $context = new Context();
+
+        $this->requestContextInitiator->initializeContext($request)->willReturn($context);
+
+        $this->flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
+
+        $this->flashListener->onKernelView($event);
+    }
+
+    /** @test */
+    public function it_does_nothing_when_validation_has_failed(): void
+    {
+        $kernel = $this->prophesize(KernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $event = new ViewEvent(
+            $kernel->reveal(),
+            $request->reveal(),
+            HttpKernelInterface::MAIN_REQUEST,
+            ['foo' => 'fighters'],
+        );
+
+        $request->isMethodSafe()->willReturn(false);
+
+        $request->attributes = $attributes;
+
+        $attributes->getBoolean('is_valid', true)->willReturn(false)->shouldBeCalled();
+
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
+
+        $context = new Context();
+
+        $this->requestContextInitiator->initializeContext($request)->willReturn($context);
+
+        $this->flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
+
+        $this->flashListener->onKernelView($event);
+    }
+}
diff --git a/src/Component/tests/spec/Symfony/EventListener/FormListenerSpec.php b/src/Component/Tests/Symfony/EventListener/FormListenerTest.php
similarity index 51%
rename from src/Component/tests/spec/Symfony/EventListener/FormListenerSpec.php
rename to src/Component/Tests/Symfony/EventListener/FormListenerTest.php
index 9dcd59521..38c102fa0 100644
--- a/src/Component/tests/spec/Symfony/EventListener/FormListenerSpec.php
+++ b/src/Component/Tests/Symfony/EventListener/FormListenerTest.php
@@ -11,11 +11,11 @@
 
 declare(strict_types=1);
 
-namespace spec\Sylius\Resource\Symfony\EventListener;
+namespace Sylius\Component\Resource\Tests\Symfony\EventListener;
 
-use PhpSpec\ObjectBehavior;
-use Sylius\Component\Resource\Metadata\MetadataInterface;
-use Sylius\Component\Resource\Metadata\RegistryInterface;
+use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
+use Prophecy\Prophecy\ObjectProphecy;
 use Sylius\Resource\Context\Context;
 use Sylius\Resource\Context\Initiator\RequestContextInitiatorInterface;
 use Sylius\Resource\Metadata\BulkUpdate;
@@ -32,35 +32,42 @@
 use Symfony\Component\HttpKernel\Event\ViewEvent;
 use Symfony\Component\HttpKernel\HttpKernelInterface;
 
-final class FormListenerSpec extends ObjectBehavior
+final class FormListenerTest extends TestCase
 {
-    function let(
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        RegistryInterface $resourceRegistry,
-        MetadataInterface $metadata,
-        FormFactoryInterface $formFactory,
-    ): void {
-        $this->beConstructedWith($operationInitiator, $contextInitiator, $formFactory);
-    }
+    use ProphecyTrait;
+
+    private HttpOperationInitiatorInterface|ObjectProphecy $operationInitiator;
+
+    private RequestContextInitiatorInterface|ObjectProphecy $contextInitiator;
+
+    private FormFactoryInterface|ObjectProphecy $formFactory;
 
-    function it_is_initializable(): void
+    private FormListener $formListener;
+
+    protected function setUp(): void
     {
-        $this->shouldHaveType(FormListener::class);
+        $this->operationInitiator = $this->prophesize(HttpOperationInitiatorInterface::class);
+        $this->contextInitiator = $this->prophesize(RequestContextInitiatorInterface::class);
+        $this->formFactory = $this->prophesize(FormFactoryInterface::class);
+
+        $this->formListener = new FormListener(
+            $this->operationInitiator->reveal(),
+            $this->contextInitiator->reveal(),
+            $this->formFactory->reveal(),
+        );
     }
 
-    function it_handles_forms(
-        HttpKernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        FormFactoryInterface $formFactory,
-        FormInterface $form,
-    ): void {
+    /** @test */
+    public function it_handles_forms(): void
+    {
+        $kernel = $this->prophesize(HttpKernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $form = $this->prophesize(FormInterface::class);
+
         $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
+            $kernel->reveal(),
+            $request->reveal(),
             HttpKernelInterface::MAIN_REQUEST,
             ['foo' => 'fighters'],
         );
@@ -73,15 +80,15 @@ function it_handles_forms(
 
         $operation = new Create(formType: 'App\Type\DummyType');
 
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
 
         $operations = new Operations();
         $operations->add('app_dummy_show', $operation);
 
         $context = new Context();
-        $contextInitiator->initializeContext($request)->willReturn($context);
+        $this->contextInitiator->initializeContext($request)->willReturn($context);
 
-        $formFactory->create($operation, $context, ['foo' => 'fighters'])
+        $this->formFactory->create($operation, $context, ['foo' => 'fighters'])
             ->willReturn($form)
             ->shouldBeCalled()
         ;
@@ -90,24 +97,23 @@ function it_handles_forms(
 
         $attributes->set('form', $form)->shouldBeCalled();
 
-        $this->onKernelView($event);
+        $this->formListener->onKernelView($event);
     }
 
-    function it_does_nothing_when_controller_result_is_a_response(
-        HttpKernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        FormFactoryInterface $formFactory,
-        FormInterface $form,
-        Response $response,
-    ): void {
+    /** @test */
+    public function it_does_nothing_when_controller_result_is_a_response(): void
+    {
+        $kernel = $this->prophesize(HttpKernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $form = $this->prophesize(FormInterface::class);
+        $response = $this->prophesize(Response::class);
+
         $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
+            $kernel->reveal(),
+            $request->reveal(),
             HttpKernelInterface::MAIN_REQUEST,
-            $response->getWrappedObject(),
+            $response->reveal(),
         );
 
         $request->attributes = $attributes;
@@ -118,15 +124,15 @@ function it_does_nothing_when_controller_result_is_a_response(
 
         $operation = new Create(formType: 'App\Type\DummyType');
 
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
 
         $operations = new Operations();
         $operations->add('app_dummy_show', $operation);
 
         $context = new Context();
-        $contextInitiator->initializeContext($request)->willReturn($context);
+        $this->contextInitiator->initializeContext($request)->willReturn($context);
 
-        $formFactory->create($operation, $context, ['foo' => 'fighters'])
+        $this->formFactory->create($operation, $context, ['foo' => 'fighters'])
             ->willReturn($form)
             ->shouldNotBeCalled()
         ;
@@ -135,21 +141,20 @@ function it_does_nothing_when_controller_result_is_a_response(
 
         $attributes->set('form', $form)->shouldNotBeCalled();
 
-        $this->onKernelView($event);
+        $this->formListener->onKernelView($event);
     }
 
-    function it_does_nothing_when_operation_has_no_form_type(
-        HttpKernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        FormFactoryInterface $formFactory,
-        FormInterface $form,
-    ): void {
+    /** @test */
+    public function it_does_nothing_when_operation_has_no_form_type(): void
+    {
+        $kernel = $this->prophesize(HttpKernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $form = $this->prophesize(FormInterface::class);
+
         $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
+            $kernel->reveal(),
+            $request->reveal(),
             HttpKernelInterface::MAIN_REQUEST,
             ['foo' => 'fighters'],
         );
@@ -162,15 +167,15 @@ function it_does_nothing_when_operation_has_no_form_type(
 
         $operation = new Create(formType: null);
 
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
 
         $operations = new Operations();
         $operations->add('app_dummy_show', $operation);
 
         $context = new Context();
-        $contextInitiator->initializeContext($request)->willReturn($context);
+        $this->contextInitiator->initializeContext($request)->willReturn($context);
 
-        $formFactory->create($operation, $context, ['foo' => 'fighters'])
+        $this->formFactory->create($operation, $context, ['foo' => 'fighters'])
             ->willReturn($form)
             ->shouldNotBeCalled()
         ;
@@ -179,21 +184,20 @@ function it_does_nothing_when_operation_has_no_form_type(
 
         $attributes->set('form', $form)->shouldNotBeCalled();
 
-        $this->onKernelView($event);
+        $this->formListener->onKernelView($event);
     }
 
-    function it_does_nothing_when_operation_is_not_a_create_or_update(
-        HttpKernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        FormFactoryInterface $formFactory,
-        FormInterface $form,
-    ): void {
+    /** @test */
+    public function it_does_nothing_when_operation_is_not_a_create_or_update(): void
+    {
+        $kernel = $this->prophesize(HttpKernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $form = $this->prophesize(FormInterface::class);
+
         $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
+            $kernel->reveal(),
+            $request->reveal(),
             HttpKernelInterface::MAIN_REQUEST,
             ['foo' => 'fighters'],
         );
@@ -206,15 +210,15 @@ function it_does_nothing_when_operation_is_not_a_create_or_update(
 
         $operation = new Show(formType: 'App\Type\DummyType');
 
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
 
         $operations = new Operations();
         $operations->add('app_dummy_show', $operation);
 
         $context = new Context();
-        $contextInitiator->initializeContext($request)->willReturn($context);
+        $this->contextInitiator->initializeContext($request)->willReturn($context);
 
-        $formFactory->create($operation, $context, ['foo' => 'fighters'])
+        $this->formFactory->create($operation, $context, ['foo' => 'fighters'])
             ->willReturn($form)
             ->shouldNotBeCalled()
         ;
@@ -223,21 +227,20 @@ function it_does_nothing_when_operation_is_not_a_create_or_update(
 
         $attributes->set('form', $form)->shouldNotBeCalled();
 
-        $this->onKernelView($event);
+        $this->formListener->onKernelView($event);
     }
 
-    function it_does_nothing_when_operation_is_a_bulk_update(
-        HttpKernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        FormFactoryInterface $formFactory,
-        FormInterface $form,
-    ): void {
+    /** @test */
+    public function it_does_nothing_when_operation_is_a_bulk_update(): void
+    {
+        $kernel = $this->prophesize(HttpKernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $form = $this->prophesize(FormInterface::class);
+
         $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
+            $kernel->reveal(),
+            $request->reveal(),
             HttpKernelInterface::MAIN_REQUEST,
             ['foo' => 'fighters'],
         );
@@ -250,15 +253,15 @@ function it_does_nothing_when_operation_is_a_bulk_update(
 
         $operation = new BulkUpdate(formType: 'App\Type\DummyType');
 
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
 
         $operations = new Operations();
         $operations->add('app_dummy_show', $operation);
 
         $context = new Context();
-        $contextInitiator->initializeContext($request)->willReturn($context);
+        $this->contextInitiator->initializeContext($request)->willReturn($context);
 
-        $formFactory->create($operation, $context, ['foo' => 'fighters'])
+        $this->formFactory->create($operation, $context, ['foo' => 'fighters'])
             ->willReturn($form)
             ->shouldNotBeCalled()
         ;
@@ -267,6 +270,6 @@ function it_does_nothing_when_operation_is_a_bulk_update(
 
         $attributes->set('form', $form)->shouldNotBeCalled();
 
-        $this->onKernelView($event);
+        $this->formListener->onKernelView($event);
     }
 }
diff --git a/src/Component/Tests/Symfony/EventListener/RespondListenerTest.php b/src/Component/Tests/Symfony/EventListener/RespondListenerTest.php
new file mode 100644
index 000000000..5aaa138a5
--- /dev/null
+++ b/src/Component/Tests/Symfony/EventListener/RespondListenerTest.php
@@ -0,0 +1,122 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Component\Resource\Tests\Symfony\EventListener;
+
+use PHPUnit\Framework\TestCase;
+use Prophecy\PhpUnit\ProphecyTrait;
+use Prophecy\Prophecy\ObjectProphecy;
+use Sylius\Resource\Context\Context;
+use Sylius\Resource\Context\Initiator\RequestContextInitiatorInterface;
+use Sylius\Resource\Metadata\HttpOperation;
+use Sylius\Resource\Metadata\Operation\HttpOperationInitiatorInterface;
+use Sylius\Resource\State\ResponderInterface;
+use Sylius\Resource\Symfony\EventListener\RespondListener;
+use Symfony\Component\HttpFoundation\ParameterBag;
+use Symfony\Component\HttpFoundation\Request;
+use Symfony\Component\HttpFoundation\Response;
+use Symfony\Component\HttpKernel\Event\ViewEvent;
+use Symfony\Component\HttpKernel\HttpKernelInterface;
+use Webmozart\Assert\Assert;
+
+final class RespondListenerTest extends TestCase
+{
+    use ProphecyTrait;
+
+    private HttpOperationInitiatorInterface|ObjectProphecy $operationInitiator;
+
+    private RequestContextInitiatorInterface|ObjectProphecy $contextInitiator;
+
+    private ResponderInterface|ObjectProphecy $responder;
+
+    private RespondListener $respondListener;
+
+    protected function setUp(): void
+    {
+        $this->operationInitiator = $this->prophesize(HttpOperationInitiatorInterface::class);
+        $this->contextInitiator = $this->prophesize(RequestContextInitiatorInterface::class);
+        $this->responder = $this->prophesize(ResponderInterface::class);
+
+        $this->respondListener = new RespondListener(
+            $this->operationInitiator->reveal(),
+            $this->contextInitiator->reveal(),
+            $this->responder->reveal(),
+        );
+    }
+
+    /** @test */
+    public function it_sets_a_response_on_event(): void
+    {
+        $kernel = $this->prophesize(HttpKernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $response = $this->prophesize(Response::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $event = new ViewEvent(
+            $kernel->reveal(),
+            $request->reveal(),
+            HttpKernelInterface::MAIN_REQUEST,
+            ['foo' => 'fighters'],
+        );
+
+        $context = new Context();
+
+        $this->contextInitiator->initializeContext($request)->willReturn($context);
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
+
+        $request->attributes = $attributes;
+        $request->getMethod()->willReturn('POST');
+
+        $this->responder->respond(['foo' => 'fighters'], $operation, $context)
+            ->willReturn($response)
+            ->shouldBeCalled()
+        ;
+
+        $this->respondListener->onKernelView($event);
+
+        Assert::eq($event->getResponse(), $response->reveal());
+    }
+
+    /** @test */
+    public function it_does_nothing_when_controller_result_is_a_response(): void
+    {
+        $kernel = $this->prophesize(HttpKernelInterface::class);
+        $request = $this->prophesize(Request::class);
+        $response = $this->prophesize(Response::class);
+        $attributes = $this->prophesize(ParameterBag::class);
+        $operation = $this->prophesize(HttpOperation::class);
+
+        $event = new ViewEvent(
+            $kernel->reveal(),
+            $request->reveal(),
+            HttpKernelInterface::MAIN_REQUEST,
+            $response->reveal(),
+        );
+
+        $context = new Context();
+
+        $this->contextInitiator->initializeContext($request)->willReturn($context);
+        $this->operationInitiator->initializeOperation($request)->willReturn($operation);
+
+        $request->attributes = $attributes;
+        $request->getMethod()->willReturn('POST');
+
+        $this->responder->respond($response, $operation, $context)
+            ->willReturn($response)
+            ->shouldNotBeCalled()
+        ;
+
+        $this->respondListener->onKernelView($event);
+    }
+}
diff --git a/src/Component/composer.json b/src/Component/composer.json
index 935da2620..ecb129c7c 100644
--- a/src/Component/composer.json
+++ b/src/Component/composer.json
@@ -50,6 +50,7 @@
         "behat/transliterator": "^1.3",
         "doctrine/orm": "^2.5",
         "phpspec/phpspec": "^7.3",
+        "phpspec/prophecy-phpunit": "^2.0",
         "phpunit/phpunit": "^9.5",
         "sylius/grid": "^1.7 || ^1.12",
         "symfony/serializer": "^5.4 || ^6.0",
diff --git a/src/Component/src/State/Processor/FlashProcessor.php b/src/Component/src/State/Processor/FlashProcessor.php
new file mode 100644
index 000000000..156ab1e5d
--- /dev/null
+++ b/src/Component/src/State/Processor/FlashProcessor.php
@@ -0,0 +1,52 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Resource\State\Processor;
+
+use Sylius\Resource\Context\Context;
+use Sylius\Resource\Context\Option\RequestOption;
+use Sylius\Resource\Metadata\Operation;
+use Sylius\Resource\State\ProcessorInterface;
+use Sylius\Resource\Symfony\Session\Flash\FlashHelperInterface;
+use Symfony\Component\HttpFoundation\Response;
+
+final class FlashProcessor implements ProcessorInterface
+{
+    public function __construct(
+        private ProcessorInterface $decorated,
+        private FlashHelperInterface $flashHelper,
+    ) {
+    }
+
+    public function process(mixed $data, Operation $operation, Context $context): mixed
+    {
+        $data = $this->decorated->process($data, $operation, $context);
+        $request = $context->get(RequestOption::class)?->request();
+
+        if (null === $request) {
+            return $data;
+        }
+
+        if (
+            $data instanceof Response ||
+            $request->isMethodSafe() ||
+            !$request->attributes->getBoolean('is_valid', true)
+        ) {
+            return $data;
+        }
+
+        $this->flashHelper->addSuccessFlash($operation, $context);
+
+        return $data;
+    }
+}
diff --git a/src/Component/src/State/Processor/RespondProcessor.php b/src/Component/src/State/Processor/RespondProcessor.php
new file mode 100644
index 000000000..0b8e59b11
--- /dev/null
+++ b/src/Component/src/State/Processor/RespondProcessor.php
@@ -0,0 +1,44 @@
+<?php
+
+/*
+ * This file is part of the Sylius package.
+ *
+ * (c) Sylius Sp. z o.o.
+ *
+ * For the full copyright and license information, please view the LICENSE
+ * file that was distributed with this source code.
+ */
+
+declare(strict_types=1);
+
+namespace Sylius\Component\Resource\src\State\Processor;
+
+use Sylius\Resource\Context\Context;
+use Sylius\Resource\Metadata\Operation;
+use Sylius\Resource\State\ProcessorInterface;
+use Sylius\Resource\State\ResponderInterface;
+use Symfony\Component\HttpFoundation\Response;
+use Webmozart\Assert\Assert;
+
+final class RespondProcessor implements ProcessorInterface
+{
+    public function __construct(
+        private ProcessorInterface $decorated,
+        private ResponderInterface $responder,
+    ) {
+    }
+
+    public function process(mixed $data, Operation $operation, Context $context): mixed
+    {
+        $data = $this->decorated->process($data, $operation, $context);
+
+        if ($data instanceof Response) {
+            return $data;
+        }
+
+        $response = $this->responder->respond($data, $operation, $context);
+        Assert::isInstanceOf($response, Response::class);
+
+        return $response;
+    }
+}
diff --git a/src/Component/tests/spec/Symfony/EventListener/FlashListenerSpec.php b/src/Component/tests/spec/Symfony/EventListener/FlashListenerSpec.php
deleted file mode 100644
index bf9f26edf..000000000
--- a/src/Component/tests/spec/Symfony/EventListener/FlashListenerSpec.php
+++ /dev/null
@@ -1,179 +0,0 @@
-<?php
-
-/*
- * This file is part of the Sylius package.
- *
- * (c) Sylius Sp. z o.o.
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-declare(strict_types=1);
-
-namespace spec\Sylius\Resource\Symfony\EventListener;
-
-use PhpSpec\ObjectBehavior;
-use Sylius\Resource\Context\Context;
-use Sylius\Resource\Context\Initiator\RequestContextInitiatorInterface;
-use Sylius\Resource\Metadata\HttpOperation;
-use Sylius\Resource\Metadata\Operation\HttpOperationInitiatorInterface;
-use Sylius\Resource\Metadata\Resource\Factory\ResourceMetadataCollectionFactoryInterface;
-use Sylius\Resource\Symfony\EventListener\FlashListener;
-use Sylius\Resource\Symfony\Session\Flash\FlashHelperInterface;
-use Symfony\Component\HttpFoundation\ParameterBag;
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\HttpKernel\Event\ViewEvent;
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-use Symfony\Component\HttpKernel\KernelInterface;
-
-final class FlashListenerSpec extends ObjectBehavior
-{
-    function let(
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $requestContextInitiator,
-        FlashHelperInterface $flashHelper,
-    ): void {
-        $this->beConstructedWith($operationInitiator, $requestContextInitiator, $flashHelper);
-    }
-
-    function it_is_initializable(): void
-    {
-        $this->shouldHaveType(FlashListener::class);
-    }
-
-    function it_adds_flash(
-        KernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $requestContextInitiator,
-        FlashHelperInterface $flashHelper,
-        HttpOperation $operation,
-    ): void {
-        $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
-            HttpKernelInterface::MAIN_REQUEST,
-            ['foo' => 'fighters'],
-        );
-
-        $request->isMethodSafe()->willReturn(false);
-
-        $request->attributes = $attributes;
-
-        $attributes->getBoolean('is_valid', true)->willReturn(true);
-
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
-
-        $context = new Context();
-
-        $requestContextInitiator->initializeContext($request)->willReturn($context);
-
-        $flashHelper->addSuccessFlash($operation, $context)->shouldBeCalled();
-
-        $this->onKernelView($event);
-    }
-
-    function it_does_nothing_when_controller_result_is_a_response(
-        KernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $requestContextInitiator,
-        FlashHelperInterface $flashHelper,
-        Response $response,
-        HttpOperation $operation,
-    ): void {
-        $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
-            HttpKernelInterface::MAIN_REQUEST,
-            $response->getWrappedObject(),
-        );
-
-        $request->isMethodSafe()->willReturn(false)->shouldNotBeCalled();
-
-        $request->attributes = $attributes;
-
-        $attributes->getBoolean('is_valid', true)->willReturn(true)->shouldNotBeCalled();
-
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
-
-        $context = new Context();
-
-        $requestContextInitiator->initializeContext($request)->willReturn($context);
-
-        $flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
-
-        $this->onKernelView($event);
-    }
-
-    function it_does_nothing_when_method_is_safe(
-        KernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $requestContextInitiator,
-        FlashHelperInterface $flashHelper,
-        HttpOperation $operation,
-    ): void {
-        $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
-            HttpKernelInterface::MAIN_REQUEST,
-            ['foo' => 'fighters'],
-        );
-
-        $request->isMethodSafe()->willReturn(true)->shouldBeCalled();
-
-        $request->attributes = $attributes;
-
-        $attributes->getBoolean('is_valid', true)->willReturn(true);
-
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
-
-        $context = new Context();
-
-        $requestContextInitiator->initializeContext($request)->willReturn($context);
-
-        $flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
-
-        $this->onKernelView($event);
-    }
-
-    function it_does_nothing_when_validation_has_failed(
-        KernelInterface $kernel,
-        Request $request,
-        ParameterBag $attributes,
-        HttpOperationInitiatorInterface $operationInitiator,
-        ResourceMetadataCollectionFactoryInterface $resourceMetadataCollectionFactory,
-        RequestContextInitiatorInterface $requestContextInitiator,
-        FlashHelperInterface $flashHelper,
-        HttpOperation $operation,
-    ): void {
-        $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
-            HttpKernelInterface::MAIN_REQUEST,
-            ['foo' => 'fighters'],
-        );
-
-        $request->isMethodSafe()->willReturn(false);
-
-        $request->attributes = $attributes;
-
-        $attributes->getBoolean('is_valid', true)->willReturn(false)->shouldBeCalled();
-
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
-
-        $context = new Context();
-
-        $requestContextInitiator->initializeContext($request)->willReturn($context);
-
-        $flashHelper->addSuccessFlash($operation, $context)->shouldNotBeCalled();
-
-        $this->onKernelView($event);
-    }
-}
diff --git a/src/Component/tests/spec/Symfony/EventListener/RespondListenerSpec.php b/src/Component/tests/spec/Symfony/EventListener/RespondListenerSpec.php
deleted file mode 100644
index b2f7278d5..000000000
--- a/src/Component/tests/spec/Symfony/EventListener/RespondListenerSpec.php
+++ /dev/null
@@ -1,112 +0,0 @@
-<?php
-
-/*
- * This file is part of the Sylius package.
- *
- * (c) Sylius Sp. z o.o.
- *
- * For the full copyright and license information, please view the LICENSE
- * file that was distributed with this source code.
- */
-
-declare(strict_types=1);
-
-namespace spec\Sylius\Resource\Symfony\EventListener;
-
-use PhpSpec\ObjectBehavior;
-use Sylius\Resource\Context\Context;
-use Sylius\Resource\Context\Initiator\RequestContextInitiatorInterface;
-use Sylius\Resource\Metadata\HttpOperation;
-use Sylius\Resource\Metadata\Operation\HttpOperationInitiatorInterface;
-use Sylius\Resource\State\ResponderInterface;
-use Sylius\Resource\Symfony\EventListener\RespondListener;
-use Symfony\Component\HttpFoundation\ParameterBag;
-use Symfony\Component\HttpFoundation\Request;
-use Symfony\Component\HttpFoundation\Response;
-use Symfony\Component\HttpKernel\Event\ViewEvent;
-use Symfony\Component\HttpKernel\HttpKernelInterface;
-use Webmozart\Assert\Assert;
-
-final class RespondListenerSpec extends ObjectBehavior
-{
-    function let(
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        ResponderInterface $responder,
-    ): void {
-        $this->beConstructedWith($operationInitiator, $contextInitiator, $responder);
-    }
-
-    function it_is_initializable(): void
-    {
-        $this->shouldHaveType(RespondListener::class);
-    }
-
-    function it_sets_a_response_on_event(
-        HttpKernelInterface $kernel,
-        Request $request,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        ParameterBag $attributes,
-        HttpOperation $operation,
-        ResponderInterface $responder,
-        Response $response,
-    ): void {
-        $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
-            HttpKernelInterface::MAIN_REQUEST,
-            ['foo' => 'fighters'],
-        );
-
-        $context = new Context();
-
-        $contextInitiator->initializeContext($request)->willReturn($context);
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
-
-        $request->attributes = $attributes;
-        $request->getMethod()->willReturn('POST');
-
-        $responder->respond(['foo' => 'fighters'], $operation, $context)
-            ->willReturn($response)
-            ->shouldBeCalled()
-        ;
-
-        $this->onKernelView($event);
-
-        Assert::eq($event->getResponse(), $response->getWrappedObject());
-    }
-
-    function it_does_nothing_when_controller_result_is_a_response(
-        HttpKernelInterface $kernel,
-        Request $request,
-        HttpOperationInitiatorInterface $operationInitiator,
-        RequestContextInitiatorInterface $contextInitiator,
-        ParameterBag $attributes,
-        HttpOperation $operation,
-        ResponderInterface $responder,
-        Response $response,
-    ): void {
-        $event = new ViewEvent(
-            $kernel->getWrappedObject(),
-            $request->getWrappedObject(),
-            HttpKernelInterface::MAIN_REQUEST,
-            $response->getWrappedObject(),
-        );
-
-        $context = new Context();
-
-        $contextInitiator->initializeContext($request)->willReturn($context);
-        $operationInitiator->initializeOperation($request)->willReturn($operation);
-
-        $request->attributes = $attributes;
-        $request->getMethod()->willReturn('POST');
-
-        $responder->respond($response, $operation, $context)
-            ->willReturn($response)
-            ->shouldNotBeCalled()
-        ;
-
-        $this->onKernelView($event);
-    }
-}