Added a table field.

src/data/record.rs

@@ -6,11 +6,18 @@ pub enum Field {
     ID(ID),
 }
 
-pub trait FieldRecord {
-    fn new_field() -> Field;
+impl Field {
+    fn new(field_type: &str) -> Field {
+        ID::new_field()
+    }
 }
 
-struct Record {
+pub trait FieldRecord {
+    fn new_field() -> Field;
+    fn get_type() -> String;
+}
+
+pub struct Record {
     data: HashMap<String, Field>,
 }
 
@@ -39,6 +46,19 @@ impl fmt::Display for Field {
     }
 }
 
+#[cfg(test)]
+mod fields {
+    use super::*;
+
+    #[test]
+    fn creaAte_new_id() {
+        match Field::new("id") {
+            Field::ID(_) => {}
+            _ => unreachable!("Fould should be an ID type."),
+        }
+    }
+}
+
 #[cfg(test)]
 mod records {
     use super::*;