impl Challenge for &'static str

actix-web-httpauth/CHANGES.md

@@ -1,6 +1,7 @@
 # Changes
 
 ## Unreleased - 2021-xx-xx
+- impl Challenge for &str
 
 
 ## 0.6.0 - 2022-03-01

actix-web-httpauth/Cargo.toml

@@ -30,3 +30,5 @@ pin-project-lite = "0.2.7"
 [dev-dependencies]
 actix-cors = "0.6.0"
 actix-web = { version = "4", default_features = false, features = ["macros"] }
+proptest = "1.0.0"
+test-strategy = "0.2.0"

actix-web-httpauth/src/headers/www_authenticate/challenge/mod.rs

@@ -10,3 +10,27 @@ pub trait Challenge: TryIntoHeaderValue + Debug + Display + Clone + Send + Sync
     /// Converts the challenge into a bytes suitable for HTTP transmission.
     fn to_bytes(&self) -> Bytes;
 }
+
+/// This is particularly useful for writing constructs such as
+/// `AuthenticationError::new("Authentication required")`
+impl Challenge for &'static str {
+    fn to_bytes(&self) -> Bytes {
+        (*self).into()
+    }
+}
+
+#[cfg(test)]
+mod tests {
+    use test_strategy::proptest;
+
+    use super::*;
+
+    #[proptest]
+    fn roundtrip_static_str(input: Box<str>) {
+        // This will leak, but it's probably fine in the context of a test.  Fixable by adding:
+        //    unsafe { Box::from_raw(s as *const str as *mut str); }
+        let s: &'static str = Box::leak(input);
+        let bytes = s.to_bytes();
+        assert_eq!(s.as_bytes(), bytes);
+    }
+}