fix: 识别失效商品链接返回首页 (#111)

client/test/test_purchase_task_service.py

@@ -108,6 +108,17 @@ class RecordingLiveAdapter(RecordingDryRunAdapter, PddLivePurchaseAdapter):
             )
 
 
+class UnavailableGoodsAdapter(RecordingDryRunAdapter):
+    def open_goods(self, goods_url: str) -> None:
+        self.calls.append(("open_goods", goods_url))
+        raise PddPurchaseError(
+            "PDD_GOODS_UNAVAILABLE",
+            "商品链接已失效，PDD 无法打开商品详情页并返回了首页",
+            step="purchase_open_goods",
+            retryable=False,
+        )
+
+
 class PurchaseTaskServiceTest(unittest.TestCase):
     def setUp(self) -> None:
         self.temp_dir = tempfile.TemporaryDirectory()
@@ -219,6 +230,18 @@ class PurchaseTaskServiceTest(unittest.TestCase):
         self.assertEqual(detail.status, TaskStatus.MANUAL_REVIEW)
         self.assertEqual(detail.last_error_code, "PURCHASE_PRICE_EXCEEDED")
 
+    def test_unavailable_goods_stops_before_specs_and_is_not_retryable(self):
+        self._prepare_task()
+        adapter = UnavailableGoodsAdapter()
+
+        outcome = self._service(adapter).execute_one_local()
+
+        self.assertEqual("business_failed", outcome.kind)
+        self.assertNotIn(("select_options", OPTIONS), adapter.calls)
+        detail = self.repository.get_task("PUR-001")
+        self.assertEqual(TaskStatus.FAILED, detail.status)
+        self.assertEqual("PDD_GOODS_UNAVAILABLE", detail.last_error_code)
+
     def test_result_submit_timeout_does_not_run_adapter_twice(self):
         self._prepare_task()
         adapter = RecordingDryRunAdapter()