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

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+import test from 'node:test';
+import assert from 'node:assert/strict';
+import { createOrder, transition, OrderState } from '../src/order.js';
+import { toOrderDTO } from '../src/order-dto.js';
+import { canRefund } from '../src/consumers/refund.js';
+import { buildNotification } from '../src/consumers/notify.js';
+import { countByStatus } from '../src/consumers/dashboard.js';
+
+const dtoIn = (state) => {
+  const order = createOrder({ amount: 100 });
+  if (state === OrderState.SHIPPED) transition(order, OrderState.PAID);
+  if (state !== OrderState.CREATED) transition(order, state);
+  return toOrderDTO(order);
+};
+
+test('已支付和已发货的订单可以退款', () => {
+  assert.equal(canRefund(dtoIn(OrderState.PAID)), true);
+  assert.equal(canRefund(dtoIn(OrderState.SHIPPED)), true);
+  assert.equal(canRefund(dtoIn(OrderState.CREATED)), false);
+  assert.equal(canRefund(dtoIn(OrderState.CANCELLED)), false);
+});
+
+test('通知文案跟随订单状态', () => {
+  assert.equal(buildNotification(dtoIn(OrderState.PAID)).text, '支付成功，等待发货');
+  assert.equal(buildNotification(dtoIn(OrderState.CANCELLED)).text, '订单已取消');
+});
+
+test('看板按状态计数', () => {
+  const counts = countByStatus([
+    dtoIn(OrderState.PAID),
+    dtoIn(OrderState.PAID),
+    dtoIn(OrderState.CREATED),
+  ]);
+  assert.deepEqual(counts, { PAID: 2, CREATED: 1 });
+});