Add test

src/ctapipe_io_lst/tests/test_pixels.py

@@ -0,0 +1,32 @@
+import os
+from pathlib import Path
+
+import numpy as np
+import protozfits
+import pytest
+from protozfits import File
+
+test_data = Path(os.getenv('LSTCHAIN_TEST_DATA', 'test_data')).absolute()
+test_file_protor1 = test_data / "real/R0/20200218/LST-1.1.Run02008.0000_first50.fits.fz"
+test_file_r1v1 = test_data / "real/R0/20231219/LST-1.1.Run16255.0000_first50.fits.fz"
+
+
+@pytest.mark.parametrize("path", (test_file_protor1, test_file_r1v1))
+def test_get_pixel_table_from_camera_config(path):
+    from ctapipe_io_lst.pixels import get_pixel_table_from_camera_config
+
+    with protozfits.File(str(path)) as f:
+        config = getattr(f, "CameraConfig", getattr(f, "CameraConfiguration", None))[0]
+
+    table = get_pixel_table_from_camera_config(config)
+
+    np.testing.assert_array_equal(np.unique(table["module_id"]), np.arange(265))
+
+    # check relationship between hardware_pixel_id and position in module
+    np.testing.assert_array_equal(
+        table["module_id"] * 7 + table["module_pixel_index"],
+        table["hardware_pixel_id"],
+    )
+
+    # check we have sorted by pixel id
+    np.testing.assert_array_equal(table["pixel_id"], np.arange(1855))