Adding data retrival.

src/lib.rs

@@ -11,6 +11,54 @@ use router::Router;
 use session::{Session, SessionData, SessionMsg};
 use std::sync::mpsc::{channel, Sender};
 
+struct Request;
+
+struct Record;
+
+struct Response {
+    headers: Vec<String>,
+    records: Vec<Record>,
+}
+
+impl Response {
+    fn new() -> Self {
+        Self {
+            headers: Vec::new(),
+            records: Vec::new(),
+        }
+    }
+
+    fn count(&self) -> usize {
+        0
+    }
+
+    fn add_header<S>(&mut self, name: S) where S: Into<String> {
+        self.headers.push(name.into());
+    }
+}
+
+#[cfg(test)]
+mod responses {
+    use super::*;
+
+    #[test]
+    fn create_response() {
+        let res = Response::new();
+        assert!(res.headers.is_empty());
+        assert!(res.records.is_empty());
+        assert_eq!(res.count(), 0);
+    }
+
+    #[test]
+    fn addA_header() {
+        let mut res = Response::new();
+        res.add_header("one");
+        assert_eq!(res.headers, ["one"]);
+        res.add_header("two".to_string());
+        assert_eq!(res.headers, ["one", "two"]);
+    }
+}
+
 /// Support functions for Messages.
 pub trait Msg {
     fn to_msgdata(&self) -> MsgData;