Added test (#8)

Reviewed-on: #8
Co-authored-by: phoenix <kundeng94@gmail.com>
Co-committed-by: phoenix <kundeng94@gmail.com>

tests/auth_tests.rs

@@ -0,0 +1,42 @@
+extern crate icarus_auth;
+
+use axum::body::Body;
+// use axum::response::Response;
+use axum::{
+    Router,
+    http::{Request, StatusCode},
+    routing::get,
+};
+// use http::{Request, StatusCode};
+// use serde_json::json;
+// use tower::ServiceExt; // for `.oneshot()`
+use tower::util::ServiceExt;
+
+use crate::icarus_auth::callers;
+
+#[tokio::test]
+async fn test_hello_world() {
+    let app = Router::new().route(callers::endpoints::ROOT, get(callers::common::root)); // Replace with your handler
+
+    let response = app
+        .oneshot(
+            Request::builder()
+                .uri(callers::endpoints::ROOT)
+                .body(Body::empty())
+                .unwrap(),
+        )
+        .await
+        .unwrap();
+
+    assert_eq!(response.status(), StatusCode::OK);
+
+    let body = String::from_utf8(
+        axum::body::to_bytes(response.into_body(), usize::MAX)
+            .await
+            .unwrap()
+            .to_vec(),
+    )
+    .unwrap();
+
+    assert_eq!(body, "Hello, World!");
+}