Fix regex issues

tests/unit/test_helper.py

@@ -0,0 +1,61 @@
+from __future__ import annotations
+
+from pathlib import Path
+import sys
+import unittest
+
+
+SRC_ROOT = Path(__file__).resolve().parents[2] / "src"
+
+if str(SRC_ROOT) not in sys.path:
+    sys.path.insert(0, str(SRC_ROOT))
+
+
+from ffx.helper import (  # noqa: E402
+    filterFilename,
+    formatRichColor,
+    removeRichColor,
+    substituteTmdbFilename,
+)
+
+
+class HelperTests(unittest.TestCase):
+    def test_filter_filename_replaces_and_removes_problem_characters(self):
+        self.assertEqual(
+            "A-B;C#",
+            filterFilename(" A/B:C*'?♥’ "),
+        )
+
+    def test_substitute_tmdb_filename_removes_filler_marker(self):
+        self.assertEqual(
+            "Episode Name",
+            substituteTmdbFilename("Episode Name (*)"),
+        )
+
+    def test_substitute_tmdb_filename_rewrites_single_episode_suffix(self):
+        self.assertEqual(
+            "Episode Name Teil 2",
+            substituteTmdbFilename("Episode Name (2)"),
+        )
+
+    def test_substitute_tmdb_filename_rewrites_episode_range_suffix(self):
+        self.assertEqual(
+            "Episode Name Teil 2-3",
+            substituteTmdbFilename("Episode Name (2/3)"),
+        )
+
+    def test_remove_rich_color_returns_inner_text(self):
+        self.assertEqual(
+            "value",
+            removeRichColor(formatRichColor("value", "green")),
+        )
+
+    def test_remove_rich_color_leaves_plain_text_unchanged(self):
+        self.assertEqual(
+            "plain text",
+            removeRichColor("plain text"),
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()