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async-agent-lab/fixture/order-service/test/order-flow.test.js

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+// 集成测试：用真实计时器走完整流程，所以整个文件要跑十几秒。
+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { createOrder, OrderState } from '../src/order.js';
+import { createStore } from '../src/order-store.js';
+import { createOrderApi } from '../src/order-api.js';
+import { scheduleAutoCancel, onPaymentCallback } from '../src/payment.js';
+import { shipWithRetry } from '../src/shipping.js';
+import { canRefund } from '../src/consumers/refund.js';
+import { buildNotification } from '../src/consumers/notify.js';
+
+const sleep = (ms) => new Promise((resolve) => setTimeout(resolve, ms));
+
+function setup() {
+  const store = createStore();
+  const api = createOrderApi(store);
+  const order = store.save(createOrder({ amount: 12900 }));
+  const read = () => api.getOrder(order.id).data;
+  return { order, read };
+}
+
+test('超时未支付自动关单（等 3 秒）', async () => {
+  const { order, read } = setup();
+  scheduleAutoCancel(order, 3000);
+  await sleep(3200);
+  assert.equal(order.state, OrderState.CANCELLED);
+  assert.equal(canRefund(read()), false);
+  assert.equal(buildNotification(read()).text, '订单已取消');
+});
+
+test('支付发生在关单之前，订单保持已支付（等 3 秒）', async () => {
+  const { order, read } = setup();
+  scheduleAutoCancel(order, 2500);
+  await sleep(1000);
+  assert.equal(onPaymentCallback(order).handled, true);
+  await sleep(2000);
+  assert.equal(order.state, OrderState.PAID);
+  assert.equal(canRefund(read()), true);
+});
+
+test('重复的支付回调只处理一次（等 2 秒）', async () => {
+  const { order } = setup();
+  assert.equal(onPaymentCallback(order).handled, true);
+  await sleep(2000);
+  assert.equal(onPaymentCallback(order).handled, false);
+});
+
+test('发货失败两次后重试成功（等 4 秒）', async () => {
+  const { order, read } = setup();
+  onPaymentCallback(order);
+  let calls = 0;
+  const flakyWarehouse = async () => {
+    calls += 1;
+    if (calls < 3) throw new Error('仓库接口超时');
+  };
+  const result = await shipWithRetry(order, flakyWarehouse, { retries: 2, backoffMs: 2000 });
+  assert.equal(result.attempts, 3);
+  assert.equal(buildNotification(read()).text, '订单已发货');
+});
+
+test('发货重试用尽后订单保持已支付（等 3 秒）', async () => {
+  const { order, read } = setup();
+  onPaymentCallback(order);
+  const downWarehouse = async () => {
+    throw new Error('仓库接口不可用');
+  };
+  await assert.rejects(shipWithRetry(order, downWarehouse, { retries: 2, backoffMs: 1500 }));
+  assert.equal(order.state, OrderState.PAID);
+  assert.equal(canRefund(read()), true);
+});