refactor: Move test code to 'tests' folder

Author: utilForever

tests/health_check.rs

@@ -0,0 +1,20 @@
+#[macro_use]
+extern crate rocket;
+
+use rocket::http::Status;
+use rocket::local::blocking::Client;
+use rocket::{Build, Rocket};
+use std::io::Read;
+
+fn spawn_app() -> Rocket<Build> {
+    bibimbap_backend::run()
+}
+
+#[test]
+fn health_check_works() {
+    let client = Client::tracked(spawn_app()).expect("Failed to create client");
+    let response = client.get(uri!("/health_check")).dispatch();
+
+    assert_eq!(response.status(), Status::Ok);
+    assert_eq!(response.bytes().count(), 0);
+}