Add a dummy test case

tests/test_find_bad_tracks.py

@@ -0,0 +1,21 @@
+from typing import cast, List
+
+from bpy.types import MovieClip, MovieTracking, MovieTrackingTrack, MovieTrackingTracks
+
+from find_bad_motion_tracks.find_bad_tracks import find_bad_tracks
+
+
+def make_clip() -> MovieClip:
+    tracks: List[MovieTrackingTrack] = []
+
+    clip = MovieClip()
+    clip.frame_start = 0
+    clip.frame_duration = 10
+    clip.tracking = MovieTracking()
+    clip.tracking.tracks = cast(MovieTrackingTracks, tracks)
+    return clip
+
+
+def test_find_bad_tracks_no_tracks():
+    test_clip = make_clip()
+    find_bad_tracks(test_clip)

tox.ini

@@ -1,8 +1,9 @@
 [tox]
 # NOTE: Should match one of the [gh-actions] configs below
-envlist = ruff-format, mypy, ruff-check
+envlist = ruff-format, mypy, ruff-check, test
 
 ruff_version = 0.4.4
+pytest_version = 8.2.2
 
 src_dir = find_bad_motion_tracks
 
@@ -45,3 +46,11 @@ deps =
 # Auto-fix locally but not in CI
 commands =
     /bin/bash -c 'FIX="--fix" ; if [ "{env:CI:}" ] ; then FIX="--no-fix" ; fi ;  ruff check $FIX {[tox]src_dir}'
+
+[testenv:test]
+depends = ruff-format
+deps =
+    pytest == {[tox]pytest_version}
+    -r requirements.txt
+commands =
+    pytest --durations=10 --color=yes tests