fix: 校验采购尺码候选边界 (#256)

client/test/test_pdd_u2_purchase_adapter.py

@@ -1052,6 +1052,54 @@ class U2PddPurchaseAdapterTest(unittest.TestCase):
         )
         adapter.close()
 
+    def test_invalid_candidate_list_never_requests_remote_resolution(self):
+        for values, expected_reason in (
+            (
+                (DimensionValue("M", True), DimensionValue("M", False)),
+                "candidate_duplicated",
+            ),
+            (
+                tuple(
+                    DimensionValue(f"尺码{index}", True)
+                    for index in range(101)
+                ),
+                "candidate_count_exceeded",
+            ),
+        ):
+            with self.subTest(expected_reason=expected_reason):
+                device = FakeDevice()
+                adapter = U2PddPurchaseAdapter(
+                    "USB-001",
+                    device_service=PddDeviceService(
+                        connector=lambda _serial: device
+                    ),
+                    sleeper=lambda _seconds: None,
+                    select_color_fn=lambda *_args, **_kwargs: True,
+                    select_size_fn=lambda *_args, **_kwargs: False,
+                    size_candidate_collector=lambda _device, items=values: (
+                        SpecDimension("size", "尺码", items)
+                    ),
+                )
+                adapter.open_goods(GOODS_URL)
+
+                with self.assertRaises(PddPurchaseError) as raised:
+                    adapter.select_options(
+                        {"color": "黑色", "size": "不存在"}
+                    )
+
+                self.assertNotIsInstance(
+                    raised.exception, PddPurchaseSpecResolutionRequired
+                )
+                self.assertEqual(
+                    raised.exception.code,
+                    "PURCHASE_SIZE_CANDIDATE_SCAN_INCOMPLETE",
+                )
+                self.assertEqual(
+                    raised.exception.diagnostics["candidate_validation"],
+                    expected_reason,
+                )
+                adapter.close()
+
     def test_size_without_selected_color_never_requests_remote_resolution(self):
         device = FakeDevice()
         scans = []