update test and build scripts

tests/test_errors_and_cleanup.py

@@ -0,0 +1,32 @@
+from pathlib import Path
+
+import pytest
+
+from orisys import Sensor
+
+
+def test_compute_deformation_requires_get_img(sensor_factory):
+    sensor = sensor_factory(backend="cpu")
+    try:
+        with pytest.raises(Exception):
+            sensor.compute_deformation(check_motion=False)
+    finally:
+        sensor.disconnect()
+
+
+def test_invalid_video_source_raises():
+    bad_path = Path("this_video_file_should_not_exist_123456.mp4")
+    with pytest.raises(Exception):
+        sensor = Sensor(vid_src=str(bad_path), verbose=False, backend="cpu")
+        sensor.disconnect()
+
+
+def test_repeated_connect_disconnect(sensor_factory):
+    for _ in range(3):
+        sensor = sensor_factory(backend="cpu")
+        try:
+            img = sensor.get_img()
+            assert img is not None
+            sensor.compute_deformation(check_motion=False)
+        finally:
+            sensor.disconnect()