Add tests/test_utils_channels.py

tests/test_utils_channels.py

@@ -0,0 +1,73 @@
+import pytest
+import sys
+import os
+sys.path.insert(0, os.path.abspath(os.path.join(os.path.dirname(__file__), '..')))
+from slic.utils.channels import *
+from unittest.mock import patch
+
+import tempfile
+import warnings
+
+
+CHANNELS_FILE_TEXT_1 = """\
+# Main experiment channels
+channel_1
+channel_2   # analog input
+chan ne ls_3
+
+another : channel_6
+
+channel_1   # duplicate, should be ignored
+   CHN_LS4
+# channel_5 is deprecated
+"""
+
+CHANNELS_FILE_TEXT_2 = """\
+# Additional DAQ channels with edge cases
+   channel_6
+channel_7#commented_inline
+channel_8    # this is a valid channel
+channel_6
+# All lines after are comments only
+#
+  # fully commented out
+channel_9
+
+# Special cases: whitespace, tabs, upper/lower
+  CHANNEL_10
+\tchannel_11
+"""
+
+# ----------- TESTS ------------
+
+def test_load_channels_and_channels_class_with_professional_names():
+
+    test_cases = [
+        (CHANNELS_FILE_TEXT_1, ['CHN_LS4', 'another : channel_6', 'chan ne ls_3', 'channel_1', 'channel_2']),
+        (CHANNELS_FILE_TEXT_2, [
+            'CHANNEL_10',
+            'channel_11',
+            'channel_6',
+            'channel_7',
+            'channel_8',
+            'channel_9',
+        ]),
+    ]
+    for file_text, expected in test_cases:
+        with tempfile.NamedTemporaryFile('w+', delete=False) as tmpfile:
+            tmpfile.write(file_text)
+            tmpfile_path = tmpfile.name
+        try:
+            # Test load_channels function
+            result_func = load_channels(tmpfile_path)
+            assert result_func == expected
+
+            # Test Channels class : including DeprecationWarning
+            with warnings.catch_warnings(record=True) as w:
+                warnings.simplefilter("always")
+                result_class = Channels(tmpfile_path)
+                assert list(result_class) == expected
+                dep_warnings = [warn for warn in w if issubclass(warn.category, DeprecationWarning)]
+                assert len(dep_warnings) == 1
+        finally:
+            os.remove(tmpfile_path)