fix(nrf52): avoid CCCD flash reset on Full Companion

test/test_nrf52_ble_cccd_fix.py

@@ -0,0 +1,32 @@
+"""Guard the nRF52 Full Companion CCCD build-local workaround."""
+
+from importlib.util import module_from_spec, spec_from_file_location
+from pathlib import Path
+import unittest
+
+
+ROOT = Path(__file__).resolve().parents[1]
+SCRIPT = ROOT / "scripts/nrf52_ble_cccd_fix.py"
+spec = spec_from_file_location("nrf52_ble_cccd_fix", SCRIPT)
+module = module_from_spec(spec)
+spec.loader.exec_module(module)
+
+
+class Nrf52BleCccdFixTest(unittest.TestCase):
+    def test_only_full_companions_skip_persistence(self):
+        patched = module.patched_source("before\n" + module.OLD_SAVE + "after\n")
+        self.assertIn("!defined(COMPANION_RADIO_FULL) || !COMPANION_RADIO_FULL", patched)
+        self.assertIn("conn->saveCccd();", patched)
+        self.assertEqual(module.patched_source(patched), patched)
+
+    def test_unrecognized_core_fails_closed(self):
+        with self.assertRaises(RuntimeError):
+            module.patched_source("changed SDK layout")
+
+    def test_nrf52_base_loads_workaround(self):
+        ini = (ROOT / "platformio.ini").read_text(encoding="utf-8")
+        self.assertIn("pre:scripts/nrf52_ble_cccd_fix.py", ini)
+
+
+if __name__ == "__main__":
+    unittest.main()