Added show module which will eventually show DocDef.

src/action/action_type.rs

@@ -33,7 +33,7 @@ impl From<MsgAction> for Action {
             MsgAction::Records(_) => Action::Records,
             MsgAction::Register(_) => Action::Register,
             MsgAction::Reply(_) => Action::Reply,
-            MsgAction::Show => Action::Show,
+            MsgAction::Show(_) => Action::Show,
             MsgAction::Update(_) => Action::Update,
         }
     }

src/action/message.rs

@@ -1,4 +1,4 @@
-use super::{Addition, DocDef, Query, Records, Reply, UserAction};
+use super::{Addition, DocDef, Query, Records, Reply, Show, UserAction};
 use crate::{
     message::{
         wrapper::{Delete, Update},
@@ -22,7 +22,7 @@ pub enum MsgAction {
     Records(Records),
     Register(Register),
     Reply(Reply),
-    Show,
+    Show(Show),
     Delete(Delete),
     Update(Update),
 }
@@ -41,6 +41,7 @@ impl MessageAction for MsgAction {
             Self::Records(data) => data.doc_name(),
             Self::Register(data) => data.doc_name(),
             Self::Reply(data) => data.doc_name(),
+            Self::Show(data) => data.doc_name(),
             _ => &NameType::None,
         }
     }

src/action/show.rs

@@ -0,0 +1,37 @@
+use crate::{message::MessageAction, name::NameType};
+
+#[derive(Clone, Debug)]
+pub struct Show {
+    doc_name: NameType,
+}
+
+impl Show {
+    pub fn new<NT>(name: NT) -> Self
+    where
+        NT: Into<NameType>,
+    {
+        Self {
+            doc_name: name.into(),
+        }
+    }
+}
+
+impl MessageAction for Show {
+    fn doc_name(&self) -> &NameType {
+        &self.doc_name
+    }
+}
+
+#[cfg(test)]
+mod shows {
+    use super::*;
+    use crate::name::test_support::random_name;
+
+    #[test]
+    fn can_request_a_show() {
+        let name = random_name();
+        let expected: NameType = name.clone().into();
+        let show = Show::new(name);
+        assert_eq!(show.doc_name(), &expected);
+    }
+}