feat: further scope nats' connection testing

Author: Jurshsmith

crates/fuel-core-nats/src/lib.rs

@@ -392,31 +392,14 @@ mod tests {
     #[tokio::test]
     async fn connects_to_nats() {
         let nats_nkey = None;
-        let chain_id = ChainId::default();
-        let base_asset_id = AssetId::default();
-        let fuel_core_database = CombinedDatabase::default();
-        let (_, blocks_subscription) =
-            broadcast::channel::<Arc<dyn Deref<Target = ImportResult> + Send + Sync>>(1);
-
-        let publisher = Publisher::new(
-            NATS_URL,
-            nats_nkey,
-            chain_id,
-            base_asset_id,
-            fuel_core_database,
-            blocks_subscription,
-        )
-        .await
-        .expect(&format!("Ensure NATS server is running at {NATS_URL}"));
+        let nats = Publisher::connect_to_nats(NATS_URL, nats_nkey)
+            .await
+            .expect(&format!("Ensure NATS server is running at {NATS_URL}"));
 
-        assert!(publisher
-            .nats
+        assert!(nats
             .jetstream_messages
             .get_last_raw_message_by_subject("*")
             .await
             .is_err_and(|err| err.kind() == LastRawMessageErrorKind::NoMessageFound));
-
-        assert_eq!(publisher.chain_id, chain_id);
-        assert_eq!(publisher.base_asset_id, base_asset_id);
     }
 }