trying to fix test which fails on windows

tests/unit/test_video.py

@@ -16,13 +16,16 @@
 from tests.utils.video import make_sample_video
 
 
+def _make_sample_video(video_dir, fname="video.avi", frame_size=(4, 6), frames=4):
+    video_path = osp.join(video_dir, fname)
+    make_sample_video(video_path, frame_size=frame_size, frames=frames)
+    return video_path
+
+
 @pytest.fixture(scope="module")
 def fxt_sample_video():
     with TestDir() as test_dir:
-        video_path = osp.join(test_dir, "video.avi")
-        make_sample_video(video_path, frame_size=(4, 6), frames=4)
-
-        yield video_path
+        yield _make_sample_video(test_dir)
 
 
 class VideoTest:
@@ -198,12 +201,13 @@ def test_can_release_resources_on_remove(self, fxt_sample_video):
 
     @mark_requirement(Requirements.DATUM_GENERAL_REQ)
     @scoped
-    def test_can_release_resources_on_checkout(self, fxt_sample_video):
-        test_dir = scope_add(TestDir())
+    def test_can_release_resources_on_checkout(self, test_dir):
+        video_path = _make_sample_video(test_dir)
+        project_dir = scope_add(TestDir())
 
-        project = scope_add(Project.init(test_dir))
+        project = scope_add(Project.init(project_dir))
 
-        src_url = osp.join(test_dir, "src")
+        src_url = osp.join(project_dir, "src")
         src = Dataset.from_iterable(
             [
                 DatasetItem(1),
@@ -218,14 +222,14 @@ def test_can_release_resources_on_checkout(self, fxt_sample_video):
 
         project.import_source(
             "src",
-            osp.dirname(fxt_sample_video),
+            osp.dirname(video_path),
             "video_frames",
-            rpath=osp.basename(fxt_sample_video),
+            rpath=osp.basename(video_path),
         )
         project.commit("commit 2")
 
         assert len(project.working_tree.make_dataset()) == 4
-        assert osp.isdir(osp.join(test_dir, "src"))
+        assert osp.isdir(osp.join(project_dir, "src"))
 
         project.checkout("HEAD~1")