change message to perfectus.

main.py

@@ -4,7 +4,7 @@
 
 @app.get("/")
 async def read_root():
-    return {"message": "Hello, FastAPI!"}
+    return {"message": "Greetings, cosmic voyager! Your journey through the APIverse begins now."}
 
 if __name__ == "__main__":
     import uvicorn

requirements.txt

@@ -1,2 +1,5 @@
 fastapi
-uvicorn
+uvicorn
+pytest
+httpx
+pandas

test_main.py

@@ -0,0 +1,9 @@
+from fastapi.testclient import TestClient
+from main import app
+
+client = TestClient(app)
+
+def test_read_root():
+    response = client.get("/")
+    assert response.status_code == 200
+    assert response.json() == {"message": "Greetings, cosmic voyager! Your journey through the APIverse begins now."}