Assert palette is not None

Tests/test_file_gif.py

@@ -313,6 +313,7 @@ def test_roundtrip_save_all_1(tmp_path: Path) -> None:
 def test_loading_multiple_palettes(path: str, mode: str) -> None:
     with Image.open(path) as im:
         assert im.mode == "P"
+        assert im.palette is not None
         first_frame_colors = im.palette.colors.keys()
         px = im.convert("RGB").load()
         assert px is not None
@@ -1325,6 +1326,7 @@ def test_palette_save_all_P(tmp_path: Path) -> None:
     with Image.open(out) as im:
         # Assert that the frames are correct, and each frame has the same palette
         assert_image_equal(im.convert("RGB"), frames[0].convert("RGB"))
+        assert im.palette is not None
         assert im.palette.palette == im.global_palette.palette
 
         im.seek(1)

Tests/test_file_jpeg2k.py

@@ -413,6 +413,7 @@ def test_subsampling_decode(name: str) -> None:
 def test_pclr() -> None:
     with Image.open(f"{EXTRA_DIR}/issue104_jpxstream.jp2") as im:
         assert im.mode == "P"
+        assert im.palette is not None
         assert len(im.palette.colors) == 256
         assert im.palette.colors[(255, 255, 255)] == 0
 
@@ -420,6 +421,7 @@ def test_pclr() -> None:
         f"{EXTRA_DIR}/147af3f1083de4393666b7d99b01b58b_signal_sigsegv_130c531_6155_5136.jp2"
     ) as im:
         assert im.mode == "P"
+        assert im.palette is not None
         assert len(im.palette.colors) == 139
         assert im.palette.colors[(0, 0, 0, 0)] == 0
 

Tests/test_file_tga.py

@@ -72,6 +72,7 @@ def test_palette_depth_8(tmp_path: Path) -> None:
 
 def test_palette_depth_16(tmp_path: Path) -> None:
     with Image.open("Tests/images/p_16.tga") as im:
+        assert im.palette is not None
         assert im.palette.mode == "RGBA"
         assert_image_equal_tofile(im.convert("RGBA"), "Tests/images/p_16.png")
 

Tests/test_image.py

@@ -662,6 +662,7 @@ class TestImage:
         im.putpalette(list(range(256)) * 4, "RGBA")
         im_remapped = im.remap_palette(list(range(256)))
         assert_image_equal(im, im_remapped)
+        assert im.palette is not None
         assert im.palette.palette == im_remapped.palette.palette
 
         # Test illegal image mode

Tests/test_image_convert.py

@@ -236,6 +236,7 @@ def test_gif_with_rgba_palette_to_p() -> None:
     with Image.open("Tests/images/hopper.gif") as im:
         im.info["transparency"] = 255
         im.load()
+        assert im.palette is not None
         assert im.palette.mode == "RGB"
         im_p = im.convert("P")
 

Tests/test_image_transform.py

@@ -47,6 +47,7 @@ class TestImageTransform:
             transformed = im.transform(
                 im.size, Image.Transform.AFFINE, [1, 0, 0, 0, 1, 0]
             )
+            assert im.palette is not None
             assert im.palette.palette == transformed.palette.palette
 
     def test_extent(self) -> None:

Tests/test_imagepalette.py

@@ -17,6 +17,7 @@ def test_sanity() -> None:
 def test_reload() -> None:
     with Image.open("Tests/images/hopper.gif") as im:
         original = im.copy()
+        assert im.palette is not None
         im.palette.dirty = 1
         assert_image_equal(im.convert("RGB"), original.convert("RGB"))