diff --git a/plugins/bc-mail/src/View/Helper/MailformHelper.php b/plugins/bc-mail/src/View/Helper/MailformHelper.php
index 7a62a1aa6a..45b04a688e 100755
--- a/plugins/bc-mail/src/View/Helper/MailformHelper.php
+++ b/plugins/bc-mail/src/View/Helper/MailformHelper.php
@@ -306,6 +306,7 @@ public function authCaptcha(string $fieldName, array $options = [])
      * @return array
      * @checked
      * @noTodo
+     * @unitTest
      */
     public function getGroupValidErrors(ResultSetInterface $mailFields, string $groupValid, array $options = [], bool $distinct = true)
     {
diff --git a/plugins/bc-mail/tests/TestCase/View/Helper/MailformHelperTest.php b/plugins/bc-mail/tests/TestCase/View/Helper/MailformHelperTest.php
index 2411cabb90..285332f5e9 100644
--- a/plugins/bc-mail/tests/TestCase/View/Helper/MailformHelperTest.php
+++ b/plugins/bc-mail/tests/TestCase/View/Helper/MailformHelperTest.php
@@ -13,12 +13,20 @@
 use BaserCore\TestSuite\BcTestCase;
 use BcMail\Model\Entity\MailField;
 use BcMail\Test\Factory\MailMessagesFactory;
+use BcMail\Service\MailFieldsServiceInterface;
 use BcMail\View\Helper\MailformHelper;
+use BcMail\Test\Scenario\MailContentsScenario;
+use BcMail\Test\Scenario\MailFieldsScenario;
 use Cake\ORM\ResultSet;
 use Cake\View\View;
+use CakephpFixtureFactories\Scenario\ScenarioAwareTrait;
 
 class MailformHelperTest extends BcTestCase
 {
+    /**
+     * ScenarioAwareTrait
+     */
+    use ScenarioAwareTrait;
 
     /**
      * set up
@@ -97,4 +105,19 @@ public static function isGroupLastFieldProvider()
         [[['group_field' => 'group1'], ['group_field' => 'group2']], 0, true],
     ];
     }
+
+    /**
+     * test getGroupValidErrors
+     */
+    public function testGetGroupValidErrors()
+    {
+        // prepare
+        $this->loadFixtureScenario(MailContentsScenario::class);
+        $this->loadFixtureScenario(MailFieldsScenario::class);
+        $MailFieldsService = $this->getService(MailFieldsServiceInterface::class);
+        // get mail field list
+        $mailFields = $MailFieldsService->getIndex(1)->all();
+        $rs = $this->MailformHelper->getGroupValidErrors($mailFields, 'field_name');
+        $this->assertEquals([], $rs);
+    }
 }