diff --git a/tests/unit/DateTimeFormatTransformTest.php b/tests/unit/DateTimeFormatTransformTest.php
new file mode 100644
index 0000000..2fb8d85
--- /dev/null
+++ b/tests/unit/DateTimeFormatTransformTest.php
@@ -0,0 +1,23 @@
+<?php
+
+namespace Rinsvent\DTO2Data\Tests\Converter;
+
+use Rinsvent\Transformer\Transformer;
+
+class DateTimeFormatTransformTest extends \Codeception\Test\Unit
+{
+    /**
+     * @var \UnitTester
+     */
+    protected $tester;
+
+    // tests
+    public function testSuccessFillRequestData()
+    {
+        $t = new Transformer();
+        $dt = new \DateTime('2022-04-01');
+        $dt->setTime(5, 23, 21);
+        $actual = $t->transform($dt, new Transformer\DateTimeFormat());
+        $this->assertEquals('2022-04-01T05:23:21+00:00', $actual);
+    }
+}
diff --git a/tests/unit/TrimTransformTest.php b/tests/unit/TrimTransformTest.php
index fb4e471..eb8ec58 100644
--- a/tests/unit/TrimTransformTest.php
+++ b/tests/unit/TrimTransformTest.php
@@ -2,15 +2,6 @@
 
 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