from __future__ import annotations import pytest from PIL import Image from .helper import assert_image_equal, hopper _webp = pytest.importorskip("PIL._webp", reason="WebP support not installed") RGB_MODE = "RGB" def test_write_lossless_rgb(tmp_path): if _webp.WebPDecoderVersion() < 0x0200: pytest.skip("lossless not included") temp_file = str(tmp_path / "temp.webp") hopper(RGB_MODE).save(temp_file, lossless=True) with Image.open(temp_file) as image: image.load() assert image.mode == RGB_MODE assert image.size == (128, 128) assert image.format == "WEBP" image.load() image.getdata() assert_image_equal(image, hopper(RGB_MODE))