Method test_extent

Tests/test_image_transform.py:57–70

(self)

            assert im.palette.palette == transformed.palette.palette

    def test_extent(self) -> None:
        im = hopper("RGB")
        w, h = im.size
        transformed = im.transform(
            im.size,
            Image.Transform.EXTENT,
            (0, 0, w // 2, h // 2),  # ul -> lr
            Image.Resampling.BILINEAR,
        )

        scaled = im.resize((w * 2, h * 2), Image.Resampling.BILINEAR).crop((0, 0, w, h))

        # undone -- precision?
        assert_image_similar(transformed, scaled, 23)

    def test_quad(self) -> None:
        # one simple quad transform, equivalent to scale & crop upper left quad