mongodb is creating a test db automatically - mongodb

Question

I have created a MongoDB database named: "helsinki_city_bike" and I uploaded CSV data using MongoDB compass in the collection name: "journey_detail". I also connected the database to atlas using a connection string. Now that I want to fetch the data from the database it's creating another test db and collection name "journey_detail" inside "helsinki_city_bike".
how can I fetch data from my collection without creating an empty collection?
the function is working well as I am getting an empty array. what I am doing wrong with the model?
This is my schema:
import mongoose from "mongoose";
export const journeySchema = mongoose.Schema({
Departure_time: String,
Return_time: String,
Departure_Station_Id: Number,
Departure_Station_Name: String,
Return_Station_Id: Number,
Return_Station_Name: String,
Covered_Distance: Number,
Duration: Number,
});
export const journey_detail = mongoose.model("journey_detail", journeySchema);
req function:
import { journey_detail } from "../models/Schema.js";
export const getJourneyDetails = async (req, res) => {
try {
const JourneyDetails = await journey_detail.find().limit(10);
if (!JourneyDetails) {
return res.status(404).json({ message: "Journey Details not found" });
}
res.status(200).json(JourneyDetails);
} catch (error) {
console.error(error);
res.status(500).json({ message: "Error retrieving Journey Details" });
}
};
connection:
const app = express();
dotenv.config();
app.use(bodyParser.json({ limit: "30mb", extended: true }));
app.use(bodyParser.urlencoded({ limit: "30mb", extended: true }));
app.use(cors());
app.use("/", router);
mongoose
.connect(process.env.CONNECTION_URL, {
useNewUrlParser: true,
useUnifiedTopology: true,
})
.then(() =>
app.listen(3001, () => console.log(`server running on the port ${3001}`))
)
.catch((error) => console.log(error));
mongoose.set();
mongoose.connection.on("open", () => {
console.log("Mongoose connected.");
});