Added integration testing.

src/main.rs

@@ -3,7 +3,7 @@ use tide::{http::StatusCode, Request, Response};
 #[async_std::main]
 async fn main() -> tide::Result<()> {
     let app = app_setup().await;
-    app.listen("127.0.0.1:8080").await?;
+    app.listen("127.0.0.1:9090").await?;
     Ok(())
 }