diff --git a/api/components/ReCaptcha/Validator.php b/api/components/ReCaptcha/Validator.php
index bacb2dc..1dfac33 100644
--- a/api/components/ReCaptcha/Validator.php
+++ b/api/components/ReCaptcha/Validator.php
@@ -1,7 +1,8 @@
 <?php
 namespace api\components\ReCaptcha;
 
-
+use common\helpers\Error as E;
+use GuzzleHttp\Client as GuzzleClient;
 use Yii;
 use yii\base\Exception;
 use yii\base\InvalidConfigException;
@@ -9,10 +10,48 @@ use yii\base\InvalidConfigException;
 class Validator extends \yii\validators\Validator {
 
     const SITE_VERIFY_URL = 'https://www.google.com/recaptcha/api/siteverify';
-    const CAPTCHA_RESPONSE_FIELD = 'g-recaptcha-response';
 
     public $skipOnEmpty = false;
 
+    public $message = E::CAPTCHA_INVALID;
+
+    public $requiredMessage = E::CAPTCHA_REQUIRED;
+
+    public function init() {
+        parent::init();
+        if ($this->getComponent() === null) {
+            throw new InvalidConfigException('Required "reCaptcha" component as instance of ' . Component::class . '.');
+        }
+
+        $this->when = function() {
+            return !YII_ENV_TEST;
+        };
+    }
+
+    /**
+     * @inheritdoc
+     */
+    protected function validateValue($value) {
+        if (empty($value)) {
+            return [$this->requiredMessage, []];
+        }
+
+        $response = $this->createClient()->post(self::SITE_VERIFY_URL, [
+            'form_params' => [
+                'secret' => $this->getComponent()->secret,
+                'response' => $value,
+                'remoteip' => Yii::$app->getRequest()->getUserIP(),
+            ],
+        ]);
+        $data = json_decode($response->getBody(), true);
+
+        if (!isset($data['success'])) {
+            throw new Exception('Invalid recaptcha verify response.');
+        }
+
+        return $data['success'] ? null : [$this->message, []];
+    }
+
     /**
      * @return Component
      */
@@ -20,46 +59,8 @@ class Validator extends \yii\validators\Validator {
         return Yii::$app->reCaptcha;
     }
 
-    public function init() {
-        parent::init();
-        if ($this->getComponent() === null) {
-            throw new InvalidConfigException('Required "reCaptcha" component as instance of ' . Component::class . '.');
-        }
-
-        if ($this->message === null) {
-            $this->message = Yii::t('yii', 'The verification code is incorrect.');
-        }
-    }
-
-    /**
-     * @inheritdoc
-     */
-    protected function validateValue($value) {
-        $value = Yii::$app->request->post(self::CAPTCHA_RESPONSE_FIELD);
-        if (empty($value)) {
-            return [$this->message, []];
-        }
-
-        $requestParams = [
-            'secret' => $this->getComponent()->secret,
-            'response' => $value,
-            'remoteip' => Yii::$app->request->userIP,
-        ];
-
-        $requestUrl = self::SITE_VERIFY_URL . '?' . http_build_query($requestParams);
-        $response = $this->getResponse($requestUrl);
-
-        if (!isset($response['success'])) {
-            throw new Exception('Invalid recaptcha verify response.');
-        }
-
-        return $response['success'] ? null : [$this->message, []];
-    }
-
-    protected function getResponse($request) {
-        $response = file_get_contents($request);
-
-        return json_decode($response, true);
+    protected function createClient() {
+        return new GuzzleClient();
     }
 
 }
diff --git a/common/helpers/Error.php b/common/helpers/Error.php
index e398b9a..b14b944 100644
--- a/common/helpers/Error.php
+++ b/common/helpers/Error.php
@@ -40,6 +40,7 @@ final class Error {
     const REFRESH_TOKEN_REQUIRED = 'error.refresh_token_required';
     const REFRESH_TOKEN_NOT_EXISTS = 'error.refresh_token_not_exist';
 
+    const CAPTCHA_REQUIRED = 'error.captcha_required';
     const CAPTCHA_INVALID = 'error.captcha_invalid';
 
     const RULES_AGREEMENT_REQUIRED = 'error.rulesAgreement_required';
diff --git a/tests/codeception/api/unit/components/ReCaptcha/ValidatorTest.php b/tests/codeception/api/unit/components/ReCaptcha/ValidatorTest.php
new file mode 100644
index 0000000..54ce065
--- /dev/null
+++ b/tests/codeception/api/unit/components/ReCaptcha/ValidatorTest.php
@@ -0,0 +1,65 @@
+<?php
+namespace codeception\api\unit\components\ReCaptcha;
+
+use api\components\ReCaptcha\Validator;
+use Codeception\Specify;
+use GuzzleHttp\Client;
+use GuzzleHttp\Handler\MockHandler;
+use GuzzleHttp\HandlerStack;
+use GuzzleHttp\Psr7\Response;
+use tests\codeception\api\unit\TestCase;
+
+class ValidatorTest extends TestCase {
+    use Specify;
+
+    public function testValidateValue() {
+        $this->specify('Get error.captcha_required, if passed empty value', function() {
+            $validator = new Validator();
+            expect($validator->validate('', $error))->false();
+            expect($error)->equals('error.captcha_required');
+        });
+
+        $this->specify('Get error.captcha_invalid, if passed wrong value', function() {
+            /** @var \PHPUnit_Framework_MockObject_MockObject|Validator $validator */
+            $validator = $this->getMockBuilder(Validator::class)
+                ->setMethods(['createClient'])
+                ->getMock();
+
+            $validator->expects($this->once())
+                ->method('createClient')
+                ->will($this->returnValue($this->createMockGuzzleClient([
+                    'success' => false,
+                    'error-codes' => [
+                        'invalid-input-response', // The response parameter is invalid or malformed.
+                    ],
+                ])));
+
+            expect($validator->validate('12341234', $error))->false();
+            expect($error)->equals('error.captcha_invalid');
+        });
+
+        $this->specify('Get error.captcha_invalid, if passed wrong value', function() {
+            /** @var \PHPUnit_Framework_MockObject_MockObject|Validator $validator */
+            $validator = $this->getMockBuilder(Validator::class)
+                ->setMethods(['createClient'])
+                ->getMock();
+
+            $validator->expects($this->once())
+                ->method('createClient')
+                ->will($this->returnValue($this->createMockGuzzleClient(['success' => true])));
+
+            expect($validator->validate('12341234', $error))->true();
+            expect($error)->null();
+        });
+    }
+
+    private function createMockGuzzleClient(array $response) {
+        $mock = new MockHandler([
+            new Response(200, [], json_encode($response)),
+        ]);
+        $handler = HandlerStack::create($mock);
+
+        return new Client(['handler' => $handler]);
+    }
+
+}
diff --git a/tests/codeception/config/api/config.php b/tests/codeception/config/api/config.php
index 564ecf0..86797ca 100644
--- a/tests/codeception/config/api/config.php
+++ b/tests/codeception/config/api/config.php
@@ -4,5 +4,9 @@ return [
         'user' => [
             'secret' => 'tests-secret-key',
         ],
+        'reCaptcha' => [
+            'public' => 'public-key',
+            'secret' => 'private-key',
+        ],
     ],
 ];