fix: 识别失效商品链接返回首页 (#111)

client/test/test_pdd_u2_purchase_adapter.py

@@ -1,5 +1,6 @@
 """uiautomator2 采购演练 Adapter 测试；不连接真实手机。"""
 
+from pathlib import Path
 import unittest
 
 from src.pdd_device_service import PddDeviceService
@@ -9,6 +10,18 @@ from src.pdd_u2_purchase_adapter import U2PddLivePurchaseAdapter
 
 
 GOODS_URL = "https://mobile.yangkeduo.com/goods.html?goods_id=753136429979"
+FIXTURES = Path(__file__).parent / "fixtures"
+
+
+class FakeClock:
+    def __init__(self) -> None:
+        self.now = 0.0
+
+    def monotonic(self) -> float:
+        return self.now
+
+    def sleep(self, seconds: float) -> None:
+        self.now += seconds
 
 
 def home_xml() -> str:
@@ -60,6 +73,7 @@ class FakeDevice:
         self.clicks = []
         self.opened_urls = []
         self.app_wait_calls = 0
+        self.has_opened = False
 
     def app_current(self):
         return {"package": "com.xunmeng.pinduoduo"}
@@ -73,8 +87,11 @@ class FakeDevice:
 
     def open_url(self, url):
         self.opened_urls.append(url)
+        self.has_opened = True
 
     def dump_hierarchy(self):
+        if not self.has_opened:
+            return '<hierarchy><node package="com.xunmeng.pinduoduo" /></hierarchy>'
         if self.mode == "special":
             return self.special_xml
         return home_xml() if self.mode == "home" else panel_xml(self.quantity)
@@ -108,6 +125,13 @@ class ColdStartDevice(FakeDevice):
         self.app_started = True
 
 
+class StaleGoodsDevice(FakeDevice):
+    """深链打开前后都停留在同一个旧商品页。"""
+
+    def dump_hierarchy(self):
+        return home_xml()
+
+
 class U2PddPurchaseAdapterTest(unittest.TestCase):
     def _adapter(self, device, calls):
         def select_color_fn(_device, _xml, target, **_kwargs):
@@ -207,6 +231,44 @@ class U2PddPurchaseAdapterTest(unittest.TestCase):
 
         self.assertEqual(raised.exception.code, "PDD_PAGE_CAPTCHA")
         self.assertEqual(device.clicks, [])
+
+    def test_stable_home_reopens_once_then_stops_before_click(self):
+        device = FakeDevice(
+            (FIXTURES / "pdd_home_page.xml").read_text(encoding="utf-8")
+        )
+        clock = FakeClock()
+        adapter = U2PddPurchaseAdapter(
+            "USB-001",
+            device_service=PddDeviceService(connector=lambda _serial: device),
+            sleeper=clock.sleep,
+            monotonic=clock.monotonic,
+            page_timeout=10.0,
+        )
+
+        with self.assertRaises(PddPurchaseError) as raised:
+            adapter.open_goods(GOODS_URL)
+
+        self.assertEqual("PDD_GOODS_UNAVAILABLE", raised.exception.code)
+        self.assertFalse(raised.exception.retryable)
+        self.assertEqual(2, len(device.opened_urls))
+        self.assertEqual([], device.clicks)
+
+    def test_stale_goods_page_is_not_accepted_as_target(self):
+        device = StaleGoodsDevice()
+        clock = FakeClock()
+        adapter = U2PddPurchaseAdapter(
+            "USB-001",
+            device_service=PddDeviceService(connector=lambda _serial: device),
+            sleeper=clock.sleep,
+            monotonic=clock.monotonic,
+            page_timeout=1.0,
+        )
+
+        with self.assertRaises(PddPurchaseError) as raised:
+            adapter.open_goods(GOODS_URL)
+
+        self.assertEqual("PDD_GOODS_IDENTITY_UNCONFIRMED", raised.exception.code)
+        self.assertEqual([], device.clicks)
         adapter.close()
 
     def test_invalid_non_pdd_url_is_rejected_before_connect(self):