Fixed InlineQueryResultsButton serialization

CHANGELOG.md

@@ -26,6 +26,7 @@ and this project adheres to [Semantic Versioning](https://semver.org/spec/v2.0.0
 ### Fixed
 
 - Now Vec<MessageId> in requests serializes into [number] instead of [ {message_id: number} ], `forward_messages`, `copy_messages` and `delete_messages` now work properly
+- Now `InlineQueryResultsButton` serializes properly ([issue 1181](https://github.com/teloxide/teloxide/issues/1181))
 
 ## 0.13.0 - 2024-08-16
 

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

@@ -17,6 +17,7 @@ pub struct InlineQueryResultsButton {
 }
 
 #[derive(Clone, Debug, Eq, Hash, PartialEq, Serialize, Deserialize)]
+#[serde(rename_all = "snake_case")]
 pub enum InlineQueryResultsButtonKind {
     /// Description of the [Web App] that will be launched when the user presses
     /// the button. The Web App will be able to switch back to the inline mode
@@ -44,3 +45,19 @@ pub enum InlineQueryResultsButtonKind {
     /// [switch_inline]: https://core.telegram.org/bots/api#inlinekeyboardmarkup
     StartParameter(String),
 }
+
+#[cfg(test)]
+mod tests {
+    use crate::types::{InlineQueryResultsButton, InlineQueryResultsButtonKind};
+
+    #[test]
+    fn inline_query_results_button() {
+        let button = InlineQueryResultsButton {
+            text: "test".into(),
+            kind: InlineQueryResultsButtonKind::StartParameter("bot".into()),
+        };
+        let expected = r#"{"text":"test","start_parameter":"bot"}"#;
+        let actual = serde_json::to_string(&button).unwrap();
+        assert_eq!(expected, actual);
+    }
+}