diff --git a/README.md b/README.md
index 03d0ff7..9f7bf73 100644
--- a/README.md
+++ b/README.md
@@ -31,6 +31,18 @@
 
 ![architecture-Keepa_API_Data_Extractor___Architecture.png](architecture-Keepa_API_Data_Extractor___Architecture.png)
 
+### Применяемые паттерны проектирования
+
+В проекте активно используются следующие паттерны:
+
+- **DTO (Data Transfer Object)**: Для передачи типизированных данных между слоями (`KeepaInputDto`, `KeepaOutputDto`).
+- **Facade (Фасад)**: `KeepaService` скрывает сложность взаимодействия с внешней библиотекой Keepa API и управления токенами.
+- **Service Layer (Сервисный слой)**: Разделение бизнес-логики (`FinderProductsService`) и логики работы с API (`KeepaService`).
+- **Orchestrator (Оркестратор)**: `FinderProductsService` управляет потоком: валидация -> поиск -> отправка.
+- **Command Handler**: Обработка сообщений через `KeepaInputMessageHandler` (CQRS-style в Symfony Messenger).
+- **Iterator / Generator**: Использование `yield` для экономии памяти при переборе больших списков товаров.
+- **Dependency Injection**: Внедрение зависимостей для обеспечения тестируемости и гибкости.
+
 ## Требования
 
 - PHP 8.3+
@@ -389,5 +401,4 @@ CREATE TABLE find_products (
 
 ## License
 
-MIT License — see [LICENSE](LICENSE) for details
-ываыва
\ No newline at end of file
+MIT License — see [LICENSE](LICENSE) for details
\ No newline at end of file
diff --git a/tests/Unit/Dto/KeepaInputDtoTest.php b/tests/Unit/Dto/KeepaInputDtoTest.php
index 38c5c4c..d071043 100644
--- a/tests/Unit/Dto/KeepaInputDtoTest.php
+++ b/tests/Unit/Dto/KeepaInputDtoTest.php
@@ -45,4 +45,20 @@ public function testFromArrayNormalizesAndCastsFields(): void
             'step' => 3,
         ], $dto->toArray());
     }
+
+    public function testGetBrandReturnsNormalizedBrand(): void
+    {
+        $dto = KeepaInputDto::fromArray([
+            'id' => '10',
+            'domain_id' => '3',
+            'brand' => "  Nike  ",
+            'time_from' => '2025-02-01',
+            'time_to' => '2025-02-28',
+            'version' => '1',
+            'status' => ' IN_PROGRESS ',
+            'step' => '1',
+        ]);
+
+        self::assertSame('Nike', $dto->getBrand());
+    }
 }
diff --git a/tests/Unit/Dto/KeepaOutputDtoTest.php b/tests/Unit/Dto/KeepaOutputDtoTest.php
new file mode 100644
index 0000000..88ba88d
--- /dev/null
+++ b/tests/Unit/Dto/KeepaOutputDtoTest.php
@@ -0,0 +1,149 @@
+<?php
+
+namespace App\Tests\Unit\Dto;
+
+use App\Dto\KeepaOutputDto;
+use PHPUnit\Framework\TestCase;
+
+class KeepaOutputDtoTest extends TestCase
+{
+    public function testFromArrayWithCompleteData(): void
+    {
+        $data = [
+            'asin' => 'B08N5WRWNW',
+            'brand' => 'Adidas',
+            'title' => 'Adidas Ultraboost 21',
+            'upc_list' => ['123456789012', '234567890123'],
+            'ean_list' => ['1234567890123', '2345678901234'],
+            'search_request_id' => 42,
+            'domain_id' => 1,
+            'json_data' => ['key' => 'value'],
+            'time_from' => '2025-01-01',
+            'time_to' => '2025-01-31',
+            'version' => 1,
+        ];
+
+        $dto = KeepaOutputDto::fromArray($data);
+
+        self::assertSame('B08N5WRWNW', $dto->asin);
+        self::assertSame('Adidas', $dto->brand);
+        self::assertSame('Adidas Ultraboost 21', $dto->title);
+        self::assertSame(['123456789012', '234567890123'], $dto->upc_list);
+        self::assertSame(['1234567890123', '2345678901234'], $dto->ean_list);
+        self::assertSame(42, $dto->search_request_id);
+        self::assertSame(1, $dto->domain_id);
+        self::assertSame(['key' => 'value'], $dto->json_data);
+        self::assertSame('2025-01-01', $dto->time_from);
+        self::assertSame('2025-01-31', $dto->time_to);
+        self::assertSame(1, $dto->version);
+    }
+
+    public function testFromArrayWithMissingFields(): void
+    {
+        $data = [
+            'asin' => 'B08N5WRWNW',
+            'brand' => 'Adidas',
+        ];
+
+        $dto = KeepaOutputDto::fromArray($data);
+
+        self::assertSame('B08N5WRWNW', $dto->asin);
+        self::assertSame('Adidas', $dto->brand);
+        self::assertNull($dto->title);
+        self::assertNull($dto->upc_list);
+        self::assertNull($dto->ean_list);
+        self::assertNull($dto->search_request_id);
+        self::assertNull($dto->domain_id);
+        self::assertNull($dto->json_data);
+        self::assertNull($dto->time_from);
+        self::assertNull($dto->time_to);
+        self::assertNull($dto->version);
+    }
+
+    public function testFromArrayCastsIntegerFields(): void
+    {
+        $data = [
+            'asin' => 'B08N5WRWNW',
+            'search_request_id' => '42',
+            'domain_id' => '1',
+            'version' => '5',
+        ];
+
+        $dto = KeepaOutputDto::fromArray($data);
+
+        self::assertSame(42, $dto->search_request_id);
+        self::assertSame(1, $dto->domain_id);
+        self::assertSame(5, $dto->version);
+    }
+
+    public function testToArrayReturnsAllProperties(): void
+    {
+        $dto = new KeepaOutputDto();
+        $dto->asin = 'B08N5WRWNW';
+        $dto->brand = 'Nike';
+        $dto->title = 'Nike Air Max';
+        $dto->upc_list = ['111111111111'];
+        $dto->ean_list = ['2222222222222'];
+        $dto->search_request_id = 100;
+        $dto->domain_id = 2;
+        $dto->json_data = ['test' => 'data'];
+        $dto->time_from = '2025-02-01';
+        $dto->time_to = '2025-02-28';
+        $dto->version = 2;
+
+        $array = $dto->toArray();
+
+        self::assertSame('B08N5WRWNW', $array['asin']);
+        self::assertSame('Nike', $array['brand']);
+        self::assertSame('Nike Air Max', $array['title']);
+        self::assertSame(['111111111111'], $array['upc_list']);
+        self::assertSame(['2222222222222'], $array['ean_list']);
+        self::assertSame(100, $array['search_request_id']);
+        self::assertSame(2, $array['domain_id']);
+        self::assertSame(['test' => 'data'], $array['json_data']);
+        self::assertSame('2025-02-01', $array['time_from']);
+        self::assertSame('2025-02-28', $array['time_to']);
+        self::assertSame(2, $array['version']);
+    }
+
+    public function testToArrayWithNullProperties(): void
+    {
+        $dto = new KeepaOutputDto();
+
+        $array = $dto->toArray();
+
+        self::assertNull($array['asin']);
+        self::assertNull($array['brand']);
+        self::assertNull($array['title']);
+        self::assertNull($array['upc_list']);
+        self::assertNull($array['ean_list']);
+        self::assertNull($array['search_request_id']);
+        self::assertNull($array['domain_id']);
+        self::assertNull($array['json_data']);
+        self::assertNull($array['time_from']);
+        self::assertNull($array['time_to']);
+        self::assertNull($array['version']);
+    }
+
+    public function testRoundTripConversion(): void
+    {
+        $originalData = [
+            'asin' => 'B08N5WRWNW',
+            'brand' => 'Puma',
+            'title' => 'Puma Suede Classic',
+            'upc_list' => ['333333333333'],
+            'ean_list' => ['4444444444444'],
+            'search_request_id' => 999,
+            'domain_id' => 3,
+            'json_data' => ['nested' => ['data' => 'here']],
+            'time_from' => '2025-03-01',
+            'time_to' => '2025-03-31',
+            'version' => 10,
+        ];
+
+        $dto = KeepaOutputDto::fromArray($originalData);
+        $resultArray = $dto->toArray();
+
+        self::assertSame($originalData, $resultArray);
+    }
+}
diff --git a/tests/Unit/Service/FinderProductsServiceTest.php b/tests/Unit/Service/FinderProductsServiceTest.php
new file mode 100644
index 0000000..2af0a06
--- /dev/null
+++ b/tests/Unit/Service/FinderProductsServiceTest.php
@@ -0,0 +1,186 @@
+<?php
+
+namespace App\Tests\Unit\Service;
+
+use App\Dto\KeepaInputDto;
+use App\Dto\KeepaOutputDto;
+use App\Service\FinderProductsService;
+use App\Service\KeepaService;
+use App\Service\Validator\MessageValidator;
+use PHPUnit\Framework\MockObject\MockObject;
+use PHPUnit\Framework\TestCase;
+use Psr\Log\LoggerInterface;
+use Symfony\Component\Messenger\MessageBusInterface;
+use Symfony\Component\Messenger\Envelope;
+
+class FinderProductsServiceTest extends TestCase
+{
+    /** @var LoggerInterface&MockObject */
+    private LoggerInterface $logger;
+
+    /** @var KeepaService&MockObject */
+    private KeepaService $keepaService;
+
+    /** @var MessageValidator&MockObject */
+    private MessageValidator $messageValidator;
+
+    /** @var MessageBusInterface&MockObject */
+    private MessageBusInterface $bus;
+
+    protected function setUp(): void
+    {
+        parent::setUp();
+
+        $this->logger = $this->createMock(LoggerInterface::class);
+        $this->keepaService = $this->createMock(KeepaService::class);
+        $this->messageValidator = $this->createMock(MessageValidator::class);
+        $this->bus = $this->createMock(MessageBusInterface::class);
+    }
+
+    public function testExecuteReturnsDefaultStatsWhenInputIsInvalid(): void
+    {
+        $dto = KeepaInputDto::fromArray([
+            'id' => 1,
+            'domain_id' => 1,
+            'brand' => 'adidas',
+            'time_from' => '2025-01-01',
+            'time_to' => '2025-01-31',
+            'version' => 1,
+            'status' => 'PENDING',
+            'step' => 0,
+        ]);
+
+        $this->messageValidator
+            ->expects(self::once())
+            ->method('validateInput')
+            ->with($dto)
+            ->willReturn(null);
+
+        $this->logger
+            ->expects(self::once())
+            ->method('warning')
+            ->with(
+                self::stringContains('Invalid Input Kafka message'),
+                self::anything(),
+            );
+
+        $this->keepaService
+            ->expects(self::never())
+            ->method('execute');
+
+        $this->bus
+            ->expects(self::never())
+            ->method('dispatch');
+
+        $service = new FinderProductsService(
+            $this->logger,
+            $this->keepaService,
+            $this->messageValidator,
+            $this->bus,
+        );
+
+        $result = $service->execute($dto);
+
+        self::assertSame(
+            [
+                'asinsFound' => 0,
+                'tokensUsed' => 0,
+                'pages' => 0,
+                'sleepSeconds' => 0,
+            ],
+            $result,
+        );
+    }
+
+    public function testExecuteDispatchesValidOutputsAndReturnsMappedStats(): void
+    {
+        $inputDto = KeepaInputDto::fromArray([
+            'id' => 2,
+            'domain_id' => 3,
+            'brand' => 'nike',
+            'time_from' => '2025-02-01',
+            'time_to' => '2025-02-28',
+            'version' => 1,
+            'status' => 'IN_PROGRESS',
+            'step' => 1,
+        ]);
+
+        $validatedInput = clone $inputDto;
+
+        $this->messageValidator
+            ->expects(self::once())
+            ->method('validateInput')
+            ->with($inputDto)
+            ->willReturn($validatedInput);
+
+        $product = new KeepaOutputDto();
+        $product->asin = 'B000TEST00';
+
+        $generator = (function () use ($product) {
+            yield $product;
+        })();
+
+        $this->keepaService
+            ->expects(self::once())
+            ->method('execute')
+            ->with($validatedInput)
+            ->willReturn($generator);
+
+        $validatedOutput = clone $product;
+
+        $this->messageValidator
+            ->expects(self::once())
+            ->method('validateOutput')
+            ->with($product)
+            ->willReturn($validatedOutput);
+
+        $this->bus
+            ->expects(self::once())
+            ->method('dispatch')
+            ->with($validatedOutput)
+            ->willReturn(new Envelope($validatedOutput));
+
+        $this->keepaService
+            ->expects(self::once())
+            ->method('getStats')
+            ->willReturn([
+                'asinsFound' => 5,
+                'tokensUsed' => 42,
+                'pagesProcessed' => 3,
+                'sleepSeconds' => 7,
+                'tokensLeft' => 100,
+            ]);
+
+        $service = new FinderProductsService(
+            $this->logger,
+            $this->keepaService,
+            $this->messageValidator,
+            $this->bus,
+        );
+
+        $result = $service->execute($inputDto);
+
+        self::assertSame(
+            [
+                'asinsFound' => 5,
+                'tokensUsed' => 42,
+                'pages' => 3,
+                'sleepSeconds' => 7,
+                'tokensLeft' => 100,
+            ],
+            $result,
+        );
+    }
+
+    public function testGetKeepaServiceReturnsInjectedInstance(): void
+    {
+        $service = new FinderProductsService(
+            $this->logger,
+            $this->keepaService,
+            $this->messageValidator,
+            $this->bus,
+        );
+
+        self::assertSame($this->keepaService, $service->getKeepaService());
+    }
+}