Merge pull request #137 from iamjpotts/20230831-error-debug

Require Debug trait for implementations of Backend::Error attribute of Backend trait

Author: ferristseng

ipfs-api-prelude/src/backend.rs

@@ -20,7 +20,7 @@ use http::{
     StatusCode,
 };
 use serde::Deserialize;
-use std::fmt::Display;
+use std::fmt::{Debug, Display};
 use tokio_util::codec::{Decoder, FramedRead};
 
 cfg_if::cfg_if! {
@@ -46,9 +46,9 @@ pub trait Backend {
 
     cfg_if::cfg_if! {
         if #[cfg(feature = "with-send-sync")] {
-            type Error: Display + From<ApiError> + From<crate::Error> + Send + 'static;
+            type Error: Display + Debug + From<ApiError> + From<crate::Error> + Send + 'static;
         } else {
-            type Error: Display + From<ApiError> + From<crate::Error> + 'static;
+            type Error: Display + Debug + From<ApiError> + From<crate::Error> + 'static;
         }
     }
 

ipfs-api/tests/test_backend.rs

@@ -0,0 +1,8 @@
+use ipfs_api::IpfsApi;
+
+// If this compiles, the test has passed, as unwrap() requires the Debug trait.
+#[allow(unused)]
+async fn test_use_client<C: IpfsApi>(client: &C) {
+    // Validate that all variants of the Backend trait's Error type (Backend::Error) implement the Debug trait.
+    client.version().await.unwrap();
+}