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Доабвил первый рабочий тест

src/Transformer.php

@@ -9,11 +9,14 @@ use Rinsvent\Transformer\Transformer\TransformerInterface;
 
 class Transformer
 {
-    public function transform(mixed $value, Meta $meta): mixed
+    public function transform(mixed $value, Meta $meta, array $tags = ['default']): mixed
     {
+        $filteredTags = array_diff($tags, $meta->tags);
+        if (count($filteredTags) === count($tags)) {
+            return $value;
+        }
         $transformer = $this->grabTransformer($meta);
-        $transformer->transform($value, $meta);
-        return $value;
+        return $transformer->transform($value, $meta);
     }
 
     private function grabTransformer(Meta $meta): TransformerInterface

tests/unit/TrimTransformTest.php

@@ -0,0 +1,30 @@
+<?php
+
+namespace Rinsvent\DTO2Data\Tests\Converter;
+
+use Rinsvent\DTO2Data\Dto2DataConverter;
+use Rinsvent\DTO2Data\Tests\unit\Converter\fixtures\FillTest\Author;
+use Rinsvent\DTO2Data\Tests\unit\Converter\fixtures\FillTest\Bar;
+use Rinsvent\DTO2Data\Tests\unit\Converter\fixtures\FillTest\BuyRequest;
+use Rinsvent\DTO2Data\Tests\unit\Converter\fixtures\FillTest\Collection;
+use Rinsvent\DTO2Data\Tests\unit\Converter\fixtures\FillTest\CollectionItem;
+use Rinsvent\DTO2Data\Tests\unit\Converter\fixtures\FillTest\HelloRequest;
+use Rinsvent\DTO2Data\Tests\unit\Converter\fixtures\FillTest\HelloSchema;
+use Rinsvent\DTO2Data\Tests\unit\Converter\fixtures\FillTest\UUID;
+use Rinsvent\Transformer\Transformer;
+
+class FillTest extends \Codeception\Test\Unit
+{
+    /**
+     * @var \UnitTester
+     */
+    protected $tester;
+
+    // tests
+    public function testSuccessFillRequestData()
+    {
+        $t = new Transformer();
+        $actual = $t->transform('  asdas  ', new Transformer\Trim());
+        $this->assertEquals('asdas', $actual);
+    }
+}