Added test and fixed conditional statement

src/token.rs

@@ -100,7 +100,7 @@ pub fn create_token(
     payload.set_subject(message);
     payload.set_issuer(issuer);
     payload.set_audience(audiences.clone());
-    if token_resource.id.is_nil() {
+    if !token_resource.id.is_nil() {
         match payload.set_claim("id", Some(serde_json::json!(token_resource.id))) {
             Ok(_) => {
             }
@@ -178,4 +178,25 @@ mod tests {
             }
         }
     }
+
+    #[test]
+    fn test_token_creation_with_id() {
+        let key = test_key();
+        let mut test_token_resource = test_resource();
+        test_token_resource.id = uuid::Uuid::new_v4();
+        let token_expiration_duration = time::Duration::hours(2);
+
+        match create_token(&key, &test_token_resource, token_expiration_duration) {
+            Ok((token, expire_duration)) => {
+                assert_eq!(false, token.is_empty(), "Error: Token is empty");
+                assert!(
+                    expire_duration > 0,
+                    "Token expire duration is invalid {expire_duration:?}"
+                );
+            }
+            Err(err) => {
+                assert!(false, "Error: {err:?}");
+            }
+        }
+    }
 }