Assert image type

python-pillow · Jan 9, 2025 · 68cbf93 · 68cbf93
1 parent 0572221
commit 68cbf93
Showing 1 changed file with 2 additions and 0 deletions.
diff --git a/Tests/test_file_tiff.py b/Tests/test_file_tiff.py
@@ -129,11 +129,13 @@ def test_bigtiff_save(self, tmp_path: Path) -> None:
         im.save(outfile, big_tiff=True)
 
         with Image.open(outfile) as reloaded:
+            assert isinstance(reloaded, TiffImagePlugin.TiffImageFile)
             assert reloaded.tag_v2._bigtiff is True
 
         im.save(outfile, save_all=True, append_images=[im], big_tiff=True)
 
         with Image.open(outfile) as reloaded:
+            assert isinstance(reloaded, TiffImagePlugin.TiffImageFile)
             assert reloaded.tag_v2._bigtiff is True
 
     def test_seek_too_large(self) -> None: