feat: stabilize multi-region runtime sync and worker orchestration

domainCheck/tests/test_step_timeout_budgets.py

@@ -5,6 +5,9 @@ from domainCheck.detect import aizhan, baidu, c360, chinaz
 
 
 class StepTimeoutBudgetTests(unittest.TestCase):
+    def tearDown(self):
+        c360._PROXY_SESSIONS.clear()
+
     def test_baidu_timeout_respects_remaining_budget(self):
         with patch.dict("os.environ", {}, clear=False):
             timeout = baidu._resolve_baidu_timeout({"http": "http://127.0.0.1:8080"}, budget_seconds=1.1)
@@ -17,6 +20,33 @@ class StepTimeoutBudgetTests(unittest.TestCase):
         self.assertLessEqual(timeout, 0.9)
         self.assertGreaterEqual(timeout, 0.6)
 
+    def test_360_direct_session_disables_env_proxy_and_is_reused(self):
+        first = c360._get_session()
+        second = c360._get_session()
+        self.assertIs(first, second)
+        self.assertFalse(first.trust_env)
+
+    def test_360_proxy_session_is_reused_per_proxy_url(self):
+        first = c360._get_session({"http": "http://127.0.0.1:8080"})
+        second = c360._get_session({"https": "http://127.0.0.1:8080"})
+        third = c360._get_session({"http": "http://127.0.0.1:8081"})
+        self.assertIs(first, second)
+        self.assertIsNot(first, third)
+        self.assertFalse(first.trust_env)
+
+    def test_360_proxy_session_cache_evicts_oldest_entry(self):
+        with patch.dict("os.environ", {"DOMAINCHECK_360_PROXY_SESSION_CACHE_SIZE": "2"}, clear=False):
+            first = c360._get_session({"http": "http://127.0.0.1:8080"})
+            second = c360._get_session({"http": "http://127.0.0.1:8081"})
+            third = c360._get_session({"http": "http://127.0.0.1:8082"})
+
+            self.assertEqual(2, len(c360._PROXY_SESSIONS))
+            self.assertIsNotNone(second)
+            self.assertIsNotNone(third)
+
+            recreated_first = c360._get_session({"http": "http://127.0.0.1:8080"})
+            self.assertIsNot(first, recreated_first)
+
     def test_chinaz_timeout_respects_remaining_budget(self):
         timeout = chinaz._resolve_chinaz_timeout({"http": "http://127.0.0.1:8080"}, budget_seconds=1.3)
         self.assertLessEqual(timeout, 1.3)