Fix deserialization of some unit structures

crates/teloxide-core/CHANGELOG.md

@@ -43,9 +43,12 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
   - `Voice::duration`
 - `RequestError::MigrateToChatId` single fields type to `ChatId` ([#859][pr859])
 - `RequestError::RetryAfter` single fields type to `Seconds` ([#859][pr859])
+- `CallbackGame`, `ForumTopicClosed`, `ForumTopicReopened`, `GeneralForumTopicHidden`, `GeneralForumTopicUnhidden` and `WriteAccessAllowed` structures
+  are now defined as named (`struct S {}`) instead of unit (`struct S;`) in order to fix their deserialization ([#876][pr876])
 
 [pr852]: https://github.com/teloxide/teloxide/pull/853
 [pr859]: https://github.com/teloxide/teloxide/pull/859
+[pr876]: https://github.com/teloxide/teloxide/pull/876
 
 ### Deprecated
 

crates/teloxide-core/src/types/callback_game.rs

@@ -9,4 +9,4 @@ use serde::{Deserialize, Serialize};
 ///
 /// [@Botfather]:  https://t.me/botfather
 #[derive(Copy, Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
-pub struct CallbackGame;
+pub struct CallbackGame {}

crates/teloxide-core/src/types/forum_topic_closed.rs

@@ -6,4 +6,4 @@ use serde::{Deserialize, Serialize};
 /// [The official docs](https://core.telegram.org/bots/api#forumtopicclosed).
 #[serde_with_macros::skip_serializing_none]
 #[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
-pub struct ForumTopicClosed;
+pub struct ForumTopicClosed {}

crates/teloxide-core/src/types/forum_topic_reopened.rs

@@ -6,4 +6,4 @@ use serde::{Deserialize, Serialize};
 /// [The official docs](https://core.telegram.org/bots/api#forumtopicreopened).
 #[serde_with_macros::skip_serializing_none]
 #[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
-pub struct ForumTopicReopened;
+pub struct ForumTopicReopened {}

crates/teloxide-core/src/types/general_forum_topic_hidden.rs

@@ -6,4 +6,4 @@ use serde::{Deserialize, Serialize};
 /// [The official docs](https://core.telegram.org/bots/api#generalforumtopichidden).
 #[serde_with_macros::skip_serializing_none]
 #[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
-pub struct GeneralForumTopicHidden;
+pub struct GeneralForumTopicHidden {}

crates/teloxide-core/src/types/general_forum_topic_unhidden.rs

@@ -6,4 +6,4 @@ use serde::{Deserialize, Serialize};
 /// [The official docs](https://core.telegram.org/bots/api#generalforumtopicunhidden).
 #[serde_with_macros::skip_serializing_none]
 #[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
-pub struct GeneralForumTopicUnhidden;
+pub struct GeneralForumTopicUnhidden {}

crates/teloxide-core/src/types/message.rs

@@ -1933,4 +1933,28 @@ mod tests {
         let msg: Message = serde_json::from_str(json).unwrap();
         assert_matches!(msg.kind, MessageKind::Empty {})
     }
+
+    #[test]
+    fn issue_874() {
+        let json = r#"{
+            "chat": {
+                "id": -1001840751935,
+                "is_forum": true,
+                "title": "AI",
+                "type": "supergroup"
+            },
+            "date": 1682191229,
+            "forum_topic_closed": {},
+            "from": {
+                "first_name": "Владислав",
+                "id": 112455916,
+                "is_bot": false,
+                "language_code": "en",
+                "username": "scv977"
+            },
+            "message_id": 62
+        }"#;
+
+        let _: Message = serde_json::from_str(json).unwrap();
+    }
 }

crates/teloxide-core/src/types/write_access_allowed.rs

@@ -6,4 +6,4 @@ use serde::{Deserialize, Serialize};
 /// [The official docs](https://core.telegram.org/bots/api#writeaccessallowed).
 #[serde_with_macros::skip_serializing_none]
 #[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
-pub struct WriteAccessAllowed;
+pub struct WriteAccessAllowed {}