diff --git a/plugins/bc-blog/src/Service/BlogCommentsService.php b/plugins/bc-blog/src/Service/BlogCommentsService.php
index 985cd75455..c7e6278690 100755
--- a/plugins/bc-blog/src/Service/BlogCommentsService.php
+++ b/plugins/bc-blog/src/Service/BlogCommentsService.php
@@ -144,6 +144,7 @@ public function getNew()
      * @param array $postData
      * @return EntityInterface
      * @checked
+     * @unitTest 
      */
     public function add(int $blogContentId, int $blogPostId, array $postData)
     {
diff --git a/plugins/bc-blog/tests/TestCase/Service/BlogCommentsServiceTest.php b/plugins/bc-blog/tests/TestCase/Service/BlogCommentsServiceTest.php
index 998b5ab429..502a61d2d1 100755
--- a/plugins/bc-blog/tests/TestCase/Service/BlogCommentsServiceTest.php
+++ b/plugins/bc-blog/tests/TestCase/Service/BlogCommentsServiceTest.php
@@ -13,6 +13,7 @@
 
 use BaserCore\TestSuite\BcTestCase;
 use BcBlog\Service\BlogCommentsService;
+use BcBlog\Test\Factory\BlogCommentFactory;
 use BcBlog\Test\Factory\BlogPostFactory;
 use BcBlog\Test\Scenario\BlogCommentsScenario;
 use BcBlog\Test\Scenario\BlogCommentsServiceScenario;
@@ -256,4 +257,46 @@ public function testGetNew()
         $result = $this->BlogCommentsService->getNew();
         $this->assertEquals('NO NAME', $result['name']);
     }
+    /**
+     * add
+     * @return void
+     */
+    public function testAdd()
+    {
+        //data test
+        $this->loadFixtureScenario(
+            BlogContentScenario::class,
+            1,  // id
+            1, // siteId
+            null, // parentId
+            'news1', // name
+            '/news/' // url
+        );
+        BlogPostFactory::make(['id' => 1, 'blog_content_id' => 1])->persist();
+        $data = [
+            'name' => 'baserCMS',
+        ];
+        $result = $this->BlogCommentsService->add(1, 1, $data);
+
+        //check result return
+        $this->assertEquals('baserCMS', $result['name']);
+
+        //confirm result add
+        $comment = BlogCommentFactory::get(1);
+        $this->assertEquals($data['name'], $comment['name']);
+        $this->assertEquals(1, $comment['blog_content_id']);
+
+        // null name
+        $data = [
+            'name' => null,
+        ];
+        $this->expectExceptionMessage("お名前を入力してください。");
+        $this->BlogCommentsService->add(1, 1, $data);
+
+        //Exception
+        $this->expectException("Cake\ORM\Exception\PersistenceFailedException");
+        $this->expectExceptionMessage("関連するコンテンツがありません");
+        $this->BlogCommentsService->add(1, 1, []);
+    }
+
 }