Remove EppCommandResponseError alias

This is a direct alias for EppCommandResponse. It is documented
as marking an error state, but type aliases aren't a great tool
for that because the type system doesn't distinguish aliased types;
if we want to do that seriously it should be a newtype wrapper.

epp-client/src/error.rs

@@ -1,13 +1,13 @@
 //! Error types to wrap internal errors and make EPP errors easier to read
 
-use crate::response::EppCommandResponseError;
+use crate::response::EppCommandResponse;
 use std::fmt::Display;
 
 /// Error enum holding the possible error types
 #[derive(Debug)]
 pub enum Error {
     EppConnectionError(std::io::Error),
-    EppCommandError(EppCommandResponseError),
+    EppCommandError(EppCommandResponse),
     EppDeserializationError(String),
     Other(String),
 }
@@ -15,7 +15,7 @@ pub enum Error {
 /// An EPP XML error
 #[derive(Debug)]
 pub struct EppCommandError {
-    pub epp_error: EppCommandResponseError,
+    pub epp_error: EppCommandResponse,
 }
 
 impl std::error::Error for Error {}

epp-client/src/response.rs

@@ -8,8 +8,6 @@ use crate::common::{ElementName, EppObject, Extension, StringValue};
 
 /// A generic EPP Response to an EPP command with a result section, a status code and a message
 pub type EppCommandResponse = EppObject<CommandResponseStatus>;
-/// An alias of `EppCommandResponse` indicating an EPP Error
-pub type EppCommandResponseError = EppCommandResponse;
 
 /// Type corresponding to the <undef> tag an EPP response XML
 #[derive(Serialize, Deserialize, Debug, PartialEq)]

epp-client/src/tests/de.rs

@@ -35,7 +35,7 @@ mod response {
     use crate::message::ack::MessageAck;
     use crate::message::poll::MessagePoll;
     use crate::request::EppRequest;
-    use crate::response::EppCommandResponseError;
+    use crate::response::EppCommandResponse;
     use crate::xml::EppXml;
 
     const SVTRID: &str = "RO-6879-1627224678242975";
@@ -75,7 +75,7 @@ mod response {
     #[test]
     fn error() {
         let xml = get_xml("response/error.xml").unwrap();
-        let object = EppCommandResponseError::deserialize(xml.as_str()).unwrap();
+        let object = EppCommandResponse::deserialize(xml.as_str()).unwrap();
 
         assert_eq!(object.data.result.code, 2303);
         assert_eq!(object.data.result.message, "Object does not exist".into());