Implement automated Fleet Hub upstream client package caching and background update distribution

tests/test_hub_update_auth_deep.py

@@ -73,8 +73,31 @@ class TestHubUpdateAuthDeep(unittest.TestCase):
         self.assertTrue(decision.get("update_available"))
         self.assertEqual(decision.get("latest_version"), "2.5.0")
 
-        decision_uptodate = manager.check_client_update(client_id="node-win-01", current_version="2.5.0", os_type="windows")
-        self.assertFalse(decision_uptodate.get("update_available"))
+        # Test download and caching from simulated upstream assets
+        mock_assets = [
+            {"name": "LOGAR_Client_Setup.exe", "download_url": "http://mock.upstream/LOGAR_Client_Setup.exe"},
+            {"name": "Linux_Client.bin", "download_url": "http://mock.upstream/Linux_Client.bin"}
+        ]
+        class MockHttpResp:
+            status = 200
+            def __init__(self):
+                self._read_done = False
+            def __enter__(self):
+                return self
+            def __exit__(self, *args):
+                pass
+            def read(self, size=65536):
+                if not self._read_done:
+                    self._read_done = True
+                    return b"MOCK_BINARY_DATA_PAYLOAD_2026"
+                return b""
+
+        with patch("urllib.request.urlopen", side_effect=lambda req, timeout=60: MockHttpResp()):
+            cache_res = manager.download_and_cache_client_packages(assets=mock_assets, target_version="2.6.0")
+            self.assertTrue(cache_res["windows"])
+            self.assertTrue(cache_res["linux"])
+            self.assertEqual(len(cache_res["downloaded"]), 2)
+            self.assertEqual(manager.hosted_client_version, "2.6.0")
 
     def test_auth_manager_components(self):
         """Tests PasswordManager, TOTPManager, SessionManager, and RateLimiter."""