Added basic field definitions.

src/message.rs

@@ -906,30 +906,61 @@ impl CreateDoc {
     }
 }
 
+#[derive(Clone, Debug, PartialEq)]
 enum FieldType {
     StaticString,
     UUID,
 }
 
+#[derive(Clone, Debug)]
+struct FieldSetting {
+    fieldtype: FieldType,
+}
+
+impl FieldSetting {
+    fn new(ftype: FieldType) -> Self {
+        Self {
+            fieldtype: ftype,
+        }
+    }
+
+    fn get_type(&self) -> &FieldType {
+        &self.fieldtype
+    }
+}
+
+#[cfg(test)]
+mod fieldsettings {
+    use super::*;
+
+    #[test]
+    fn can_field_type_be_assigned() {
+        let ftypes = [FieldType::StaticString, FieldType::UUID];
+        for ftype in ftypes.into_iter() {
+            let fieldinfo = FieldSetting::new(ftype.clone());
+            assert_eq!(fieldinfo.get_type(), &ftype);
+        }
+    }
+}
+
 #[derive(Clone, Debug)]
 struct DocDef {
-    fields: Vec<String>,
+    fields: HashMap<String, FieldSetting>,
 }
 
 impl DocDef {
     fn new() -> Self {
-        Self { fields: Vec::new() }
+        Self { fields: HashMap::new() }
     }
 
-    fn add_field(&mut self, name: String) {
-        self.fields.push(name);
+    fn add_field(&mut self, name: String, ftype: FieldType) {
+        self.fields.insert(name, FieldSetting::new(ftype));
     }
 
-    fn get_field(&self, name: &str) -> Result<String, MTTError> {
-        if self.fields.contains(&name.to_string()) {
-            Ok(name.to_string())
-        } else {
-            Err(MTTError::DocumentFieldNotFound(name.to_string()))
+    fn get_field(&self, name: &str) -> Result<&FieldSetting, MTTError> {
+        match self.fields.get(name) {
+            Some(data) => Ok(data),
+            None => Err(MTTError::DocumentFieldNotFound(name.to_string()))
         }
     }
 }
@@ -942,9 +973,10 @@ mod docdefs {
     fn can_field_be_added() {
         let mut docdef = DocDef::new();
         let name = Uuid::new_v4().to_string();
-        docdef.add_field(name.clone());
+        let field_type = FieldType::UUID;
+        docdef.add_field(name.clone(), field_type.clone());
         let result = docdef.get_field(name.as_str()).unwrap();
-        assert_eq!(result, name);
+        assert_eq!(result.get_type(), &field_type);
     }
 
     #[test]
@@ -964,12 +996,13 @@ mod docdefs {
     fn can_multiple_fields_be_added() {
         let mut docdef = DocDef::new();
         let names = ["one", "two", "three"];
+        let field_type = FieldType::StaticString;
         for name in names.iter() {
-            docdef.add_field(name.to_string());
+            docdef.add_field(name.to_string(), field_type.clone());
         }
         for name in names.iter() {
             let result = docdef.get_field(name).unwrap();
-            assert_eq!(result, name.to_string());
+            assert_eq!(result.get_type(), &field_type);
         }
     }
 }
@@ -1085,6 +1118,7 @@ mod documents {
         let show = rx.recv_timeout(TIMEOUT).unwrap();
     }
 
+    #[test]
     fn only_responses_to_its_show_request() {
         let docdef = DocDef::new();
         let name = "quiet";