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Challenges / Orders API charges twice

Demo Run tests

1import { Router } from "express";
2import { charge } from "../payments.js";
3import { db } from "../db.js";
4
5export const ordersRouter = Router();
6
7ordersRouter.post("/", async (req, res) => {
8  const { cartId, total } = req.body;
9  const payment = await charge(cartId, total);
10
11  const existing = await db.orders.findByCart(cartId);
12  if (existing) return res.status(200).json(existing);
13
14  const order = await db.orders.create({ cartId, total, payment });
15  res.status(201).json(order);
16});

Debug coachHints only

charges once on retry
Why does the retry test see two charges?
The test posts the same cart twice and expects charge to run once.
In routes/orders.js, compare line 9 with the duplicate check on line 11. On the second request, which one runs first?

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Code you didn’t write.Tests that must pass.

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Code you didn’t write.
Tests that must pass.