feat: define interfaces for delete_captcha_levels and delete_captcha

db/db-core/src/lib.rs

@@ -151,6 +151,16 @@ pub trait MCDatabase: std::marker::Send + std::marker::Sync + CloneSPDatabase {
         username: Option<&str>,
         captcha_key: &str,
     ) -> DBResult<bool>;
+
+    /// Delete all levels of a captcha
+    async fn delete_captcha_levels(
+        &self,
+        username: &str,
+        captcha_key: &str,
+    ) -> DBResult<()>;
+
+    /// Delete captcha
+    async fn delete_captcha(&self, username: &str, captcha_key: &str) -> DBResult<()>;
 }
 
 #[derive(Clone, Debug, Default, Deserialize, Serialize)]

db/db-core/src/tests.rs

@@ -131,8 +131,18 @@ pub async fn database_works<'a, T: MCDatabase>(
         "user was with empty email but email is set; so email should exsit"
     );
 
+    // create captcha
     db.create_captcha(p.username, c).await.unwrap();
     assert!(db.captcha_exists(None, c.key).await.unwrap());
     assert!(db.captcha_exists(Some(p.username), c.key).await.unwrap());
+
+    // add captcha levels
     db.add_captcha_levels(p.username, c.key, l).await.unwrap();
+
+    // delete captcha levels
+    db.delete_captcha_levels(p.username, c.key).await.unwrap();
+
+    // delete captcha
+    db.delete_captcha(p.username, c.key).await.unwrap();
+    assert!(!db.captcha_exists(Some(p.username), c.key).await.unwrap());
 }