Implement some more commands

src/commands/queue/clear.rs

@@ -0,0 +1,22 @@
+use crate::commands::{
+    Command, Request, RequestParserResult, ResponseAttributes, ResponseParserError,
+};
+
+pub struct Clear;
+
+impl Command for Clear {
+    type Response = ();
+    const COMMAND: &'static str = "clear";
+
+    fn parse_request(mut parts: std::str::SplitWhitespace<'_>) -> RequestParserResult<'_> {
+        debug_assert!(parts.next().is_none());
+        Ok((Request::Clear, ""))
+    }
+
+    fn parse_response(
+        parts: ResponseAttributes<'_>,
+    ) -> Result<Self::Response, ResponseParserError> {
+        debug_assert!(parts.is_empty());
+        Ok(())
+    }
+}