Moved Oid into document module.

src/document/record.rs

@@ -1,12 +1,40 @@
 use crate::{
     action::Field,
-    message::wrapper::Oid,
     mtterror::{ErrorID, MTTError},
     name::{Name, NameType, Names},
 };
 use std::collections::HashMap;
 use uuid::Uuid;
 
+#[derive(Clone, Debug, Eq, Hash, PartialEq)]
+pub struct Oid {
+    oid: Uuid,
+}
+
+impl Oid {
+    pub fn new() -> Self {
+        Self {
+            oid: Uuid::new_v4(),
+        }
+    }
+}
+
+#[cfg(test)]
+mod oids {
+    use super::*;
+
+    #[test]
+    fn are_oids_random() {
+        let count = 10;
+        let mut holder: Vec<Oid> = Vec::new();
+        while holder.len() < count {
+            let result = Oid::new();
+            assert!(!holder.contains(&result));
+            holder.push(result);
+        }
+    }
+}
+
 #[derive(Clone, Debug)]
 pub struct InternalRecord {
     data: HashMap<Uuid, Field>,