first setup of the controller

tests/test_service.py

@@ -0,0 +1,57 @@
+import unittest
+from unittest.mock import patch
+
+from lib._zyxel import normalize_mac
+from lib._arrival_detection import ArrivalDetector, _notify
+
+
+class ArrivalDetectorTests(unittest.TestCase):
+    def test_starting_present_does_not_emit_arrival(self):
+        detector = ArrivalDetector(absent_after=2, present_after=2)
+        self.assertFalse(detector.sample(True))
+        self.assertFalse(detector.sample(True))
+
+    def test_emits_only_after_absence_and_debounced_presence(self):
+        detector = ArrivalDetector(absent_after=2, present_after=2)
+        for value in (False, False, True):
+            self.assertFalse(detector.sample(value))
+        self.assertTrue(detector.sample(True))
+        self.assertFalse(detector.sample(True))
+
+    def test_single_missed_poll_does_not_mark_absent(self):
+        detector = ArrivalDetector(absent_after=2, present_after=1)
+        detector.sample(True)
+        self.assertFalse(detector.sample(False))
+        self.assertFalse(detector.sample(True))
+
+
+class MacTests(unittest.TestCase):
+    def test_normalizes_common_formats(self):
+        self.assertEqual(normalize_mac("AA-BB-CC-DD-EE-FF"), "aa:bb:cc:dd:ee:ff")
+
+    def test_rejects_invalid_mac(self):
+        with self.assertRaises(ValueError):
+            normalize_mac("not-a-mac")
+
+
+class NotificationTests(unittest.TestCase):
+    @patch("lib._arrival_detection.send_notification")
+    def test_uses_notify_module(self, send_notification):
+        config = {
+            "notification": {
+                "enabled": True,
+                "message": "Welcome home, {name} ({mac})",
+                "topic_url": "https://ntfy.example/home",
+                "timeout": 4,
+            }
+        }
+        _notify(config, {"name": "Ignace", "mac": "aa:bb:cc:dd:ee:ff"})
+        send_notification.assert_called_once_with(
+            "Welcome home, Ignace (aa:bb:cc:dd:ee:ff)",
+            topic_url="https://ntfy.example/home",
+            timeout=4.0,
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()