spawn app for each integration test

also adds missing dep to flake

tests/healthcheck_test.rs

@@ -1,18 +1,11 @@
+mod common;
+use common::spawn_app;
 use reqwest::StatusCode;
 
 #[tokio::test]
 async fn test_healthcheck() -> reqwest::Result<()> {
-    let response = reqwest::get("http://localhost:7000/healthcheck").await?;
-
-    assert_eq!(response.status(), StatusCode::OK);
-    assert_eq!(response.text().await?, r#"{"healthy":true}"#);
-
-    Ok(())
-}
-
-#[tokio::test]
-async fn test_healthcheck2() -> reqwest::Result<()> {
-    let response = reqwest::get("http://localhost:7000/healthcheck").await?;
+    let address = spawn_app();
+    let response = reqwest::get(format!("{address}/api/healthcheck")).await?;
 
     assert_eq!(response.status(), StatusCode::OK);
     assert_eq!(response.text().await?, r#"{"healthy":true}"#);