commands: implement response parser for protocol available

src/commands/connection_settings/protocol_available.rs

@@ -1,12 +1,13 @@
 use crate::{
-    Request,
-    commands::{Command, RequestParserResult, ResponseAttributes, ResponseParserError},
+    commands::{expect_property_type, Command, RequestParserResult, ResponseAttributes, ResponseParserError}, Request
 };
 
 pub struct ProtocolAvailable;
 
+pub type ProtocolAvailableResponse = Vec<String>;
+
 impl Command for ProtocolAvailable {
-    type Response = ();
+    type Response = ProtocolAvailableResponse;
     const COMMAND: &'static str = "protocol available";
 
     fn parse_request(mut parts: std::str::SplitWhitespace<'_>) -> RequestParserResult<'_> {
@@ -17,6 +18,16 @@ impl Command for ProtocolAvailable {
     fn parse_response(
         parts: ResponseAttributes<'_>,
     ) -> Result<Self::Response, ResponseParserError<'_>> {
-        unimplemented!()
+      for (k, _) in parts.0.iter().filter(|(k, _)| *k != "feature") {
+          return Err(ResponseParserError::UnexpectedProperty(k));
+      }
+
+      let list = parts
+          .0
+          .into_iter()
+          .map(|(k, v)| Ok(expect_property_type!(Some(v), k, Text).to_string()))
+          .collect::<Result<Vec<_>, ResponseParserError>>()?;
+
+      Ok(list)
     }
 }