insert subscription, db test isolation

src/startup.rs

@@ -5,13 +5,13 @@ use std::net::TcpListener;
 
 use crate::routes::{health_check, subscribe};
 
-pub fn run(listener: TcpListener, connection: Pool<Postgres>) -> Result<Server, std::io::Error> {
-	let connection = web::Data::new(connection);
+pub fn run(listener: TcpListener, connection_pool: Pool<Postgres>) -> Result<Server, std::io::Error> {
+	let connection_pool = web::Data::new(connection_pool);
     let server = HttpServer::new(move || {
         App::new()
             .route("/health_check", web::get().to(health_check))
             .route("/subscriptions", web::post().to(subscribe))
-            .app_data(connection.clone())
+            .app_data(connection_pool.clone())
     })
     .listen(listener)?
     .run();