Expose error kind messages in responses

CHANGELOG.md

@@ -3,6 +3,17 @@ All notable changes to this project will be documented in this file.
 
 ## [Unreleased]
 
+## [0.11.2] - 2025-10-28
+
+### Changed
+- Surfaced the [`AppErrorKind`] display text as the fallback `ErrorResponse`
+  message so clients receive semantic descriptions without providing a custom
+  message.
+
+### Tests
+- Added regression coverage ensuring bare `AppError` kinds map to their
+  corresponding default message.
+
 ## [0.11.1] - 2025-10-27
 
 ### Documentation

Cargo.toml

@@ -1,6 +1,6 @@
 [package]
 name = "masterror"
-version = "0.11.1"
+version = "0.11.2"
 rust-version = "1.90"
 edition = "2024"
 license = "MIT OR Apache-2.0"

README.md

@@ -36,9 +36,9 @@ guides, comparisons with `thiserror`/`anyhow`, and troubleshooting recipes.
 
 ~~~toml
 [dependencies]
-masterror = { version = "0.11.1", default-features = false }
+masterror = { version = "0.11.2", default-features = false }
 # or with features:
-# masterror = { version = "0.11.1", features = [
+# masterror = { version = "0.11.2", features = [
 #   "axum", "actix", "openapi", "serde_json",
 #   "sqlx", "sqlx-migrate", "reqwest", "redis",
 #   "validator", "config", "tokio", "multipart",
@@ -73,10 +73,10 @@ masterror = { version = "0.11.1", default-features = false }
 ~~~toml
 [dependencies]
 # lean core
-masterror = { version = "0.11.1", default-features = false }
+masterror = { version = "0.11.2", default-features = false }
 
 # with Axum/Actix + JSON + integrations
-# masterror = { version = "0.11.1", features = [
+# masterror = { version = "0.11.2", features = [
 #   "axum", "actix", "openapi", "serde_json",
 #   "sqlx", "sqlx-migrate", "reqwest", "redis",
 #   "validator", "config", "tokio", "multipart",
@@ -632,13 +632,13 @@ assert_eq!(resp.status, 401);
 Minimal core:
 
 ~~~toml
-masterror = { version = "0.11.1", default-features = false }
+masterror = { version = "0.11.2", default-features = false }
 ~~~
 
 API (Axum + JSON + deps):
 
 ~~~toml
-masterror = { version = "0.11.1", features = [
+masterror = { version = "0.11.2", features = [
   "axum", "serde_json", "openapi",
   "sqlx", "reqwest", "redis", "validator", "config", "tokio"
 ] }
@@ -647,7 +647,7 @@ masterror = { version = "0.11.1", features = [
 API (Actix + JSON + deps):
 
 ~~~toml
-masterror = { version = "0.11.1", features = [
+masterror = { version = "0.11.2", features = [
   "actix", "serde_json", "openapi",
   "sqlx", "reqwest", "redis", "validator", "config", "tokio"
 ] }
@@ -718,4 +718,3 @@ MSRV = 1.90 (may raise in minor, never in patch).
 Apache-2.0 OR MIT, at your option.
 
 </details>
-

README.ru.md

@@ -37,9 +37,9 @@
 ~~~toml
 [dependencies]
 # минимальное ядро
-masterror = { version = "0.11.1", default-features = false }
+masterror = { version = "0.11.2", default-features = false }
 # или с нужными интеграциями
-# masterror = { version = "0.11.1", features = [
+# masterror = { version = "0.11.2", features = [
 #   "axum", "actix", "openapi", "serde_json",
 #   "sqlx", "sqlx-migrate", "reqwest", "redis",
 #   "validator", "config", "tokio", "multipart",

src/response/mapping.rs

@@ -26,7 +26,7 @@ impl From<AppError> for ErrorResponse {
         let code = AppCode::from(kind);
         let message = match message {
             Some(msg) => msg.into_owned(),
-            None => String::from("An error occurred")
+            None => kind.to_string()
         };
 
         Self {
@@ -48,7 +48,7 @@ impl From<&AppError> for ErrorResponse {
         let message = err
             .message
             .clone()
-            .unwrap_or(Cow::Borrowed("An error occurred"))
+            .unwrap_or_else(|| Cow::Owned(err.kind.to_string()))
             .into_owned();
 
         Self {

src/response/tests.rs

@@ -144,7 +144,7 @@ fn from_app_error_uses_default_message_when_none() {
     let e: ErrorResponse = (&app).into();
     assert_eq!(e.status, 500);
     assert!(matches!(e.code, AppCode::Internal));
-    assert_eq!(e.message, "An error occurred");
+    assert_eq!(e.message, AppErrorKind::Internal.to_string());
 }
 
 #[test]
@@ -168,7 +168,17 @@ fn from_owned_app_error_defaults_message_when_absent() {
 
     assert_eq!(resp.status, 500);
     assert!(matches!(resp.code, AppCode::Internal));
-    assert_eq!(resp.message, "An error occurred");
+    assert_eq!(resp.message, AppErrorKind::Internal.to_string());
+}
+
+#[test]
+fn from_app_error_bare_uses_kind_display_as_message() {
+    let app = AppError::bare(AppErrorKind::Timeout);
+    let resp: ErrorResponse = app.into();
+
+    assert_eq!(resp.status, 504);
+    assert!(matches!(resp.code, AppCode::Timeout));
+    assert_eq!(resp.message, AppErrorKind::Timeout.to_string());
 }
 
 // --- Display formatting --------------------------------------------------