Merge pull request 'fix(vision): Kameraindex 0 erhalten und hardwarefrei testen' (#1) from auron/beerbot-camera-0-6529edad into main

PROJECT_SOURCE_CODE/python_dobot_yolo/beerbot_vision/tests/test_camera_selection.py

@@ -0,0 +1,85 @@
+"""Hardware-free constructor regression checks, prepared separately from BeerBot.
+These tests are new local review artifacts, not files present in the base commit.
+They load the real vision.py and config.py only inside the isolated test container.
+"""
+import importlib.util
+from pathlib import Path
+import sys
+import types
+import unittest
+from unittest.mock import patch
+
+SOURCE = Path(__file__).resolve().parents[1]
+
+class CameraSelectionTests(unittest.TestCase):
+    def check_camera(self, requested, expected):
+        events = []
+        forbidden = []
+
+        def deny(operation):
+            def blocked(*args, **kwargs):
+                forbidden.append(operation)
+                raise AssertionError('External operation forbidden: ' + operation)
+            return blocked
+
+        cv2 = types.ModuleType('cv2')
+        for name in ('VideoCapture', 'imshow', 'imwrite', 'waitKey', 'destroyAllWindows'):
+            setattr(cv2, name, deny('cv2.' + name))
+        numpy = types.ModuleType('numpy')
+        numpy.load = deny('numpy.load')
+        rpc = types.ModuleType('DobotRPC')
+        rpc.RPCClient = deny('DobotRPC.RPCClient')
+        rpc.DobotlinkAdapter = deny('DobotRPC.DobotlinkAdapter')
+
+        class InertModel:
+            def __init__(self, model_path):
+                events.append(('inert_model', model_path))
+            __call__ = deny('YOLO inference')
+            predict = deny('YOLO.predict')
+            train = deny('YOLO.train')
+
+        class InertCalibrator:
+            def __init__(self):
+                events.append(('inert_calibrator',))
+
+        class InertUI:
+            def __init__(self):
+                events.append(('inert_ui',))
+
+        ultralytics = types.ModuleType('ultralytics')
+        ultralytics.YOLO = InertModel
+        calibrator = types.ModuleType('calibrator')
+        calibrator.CameraCalibrator = InertCalibrator
+        interface = types.ModuleType('user_interface')
+        interface.ModernUI = InertUI
+        config_spec = importlib.util.spec_from_file_location('_reviewed_beerbot_config', SOURCE / 'config.py')
+        config = importlib.util.module_from_spec(config_spec)
+        config_spec.loader.exec_module(config)
+        self.assertEqual(config.Config.CAMERA_ID, 1, 'The reviewed base configuration changed')
+        doubles = {'cv2': cv2, 'numpy': numpy, 'config': config,
+                   'calibrator': calibrator, 'user_interface': interface,
+                   'ultralytics': ultralytics, 'DobotRPC': rpc}
+        with patch.dict(sys.modules, doubles):
+            spec = importlib.util.spec_from_file_location('_reviewed_beerbot_vision', SOURCE / 'vision.py')
+            module = importlib.util.module_from_spec(spec)
+            spec.loader.exec_module(module)
+            # The constructor and camera assignment are actual repository code.
+            instance = module.BeerBotVision(camera_id=requested, model_path='inert-local-test-model')
+        self.assertIsNone(instance.cap)
+        self.assertFalse(instance.camera_initialized)
+        self.assertEqual(events, [('inert_model', 'inert-local-test-model'),
+                                  ('inert_calibrator',), ('inert_ui',)])
+        self.assertEqual(forbidden, [])
+        self.assertEqual(instance.camera_id, expected)
+
+    def test_camera_zero(self):
+        self.check_camera(0, 0)
+
+    def test_camera_none(self):
+        self.check_camera(None, 1)
+
+    def test_camera_two(self):
+        self.check_camera(2, 2)
+
+if __name__ == '__main__':
+    unittest.main()

PROJECT_SOURCE_CODE/python_dobot_yolo/beerbot_vision/vision.py

@@ -19,7 +19,7 @@ except ImportError:
 
 class BeerBotVision:
     def __init__(self, camera_id=None, model_path=None):
-        self.camera_id = camera_id or Config.CAMERA_ID
+        self.camera_id = Config.CAMERA_ID if camera_id is None else camera_id
         self.model_path = model_path or Config.YOLO_MODEL
 
         if YOLO_AVAILABLE: