Pillow/Tests/test_qt_image_toqimage.py
Hugo van Kemenade 53c3cd9f8e isort Tests
2024-01-20 13:23:03 +02:00

46 lines
1.2 KiB
Python

from __future__ import annotations
import pytest
from PIL import ImageQt
from .helper import assert_image_equal, assert_image_equal_tofile, hopper
pytestmark = pytest.mark.skipif(
not ImageQt.qt_is_installed, reason="Qt bindings are not installed"
)
if ImageQt.qt_is_installed:
from PIL.ImageQt import QImage
@pytest.mark.parametrize("mode", ("RGB", "RGBA", "L", "P", "1"))
def test_sanity(mode, tmp_path):
src = hopper(mode)
data = ImageQt.toqimage(src)
assert isinstance(data, QImage)
assert not data.isNull()
# reload directly from the qimage
rt = ImageQt.fromqimage(data)
if mode in ("L", "P", "1"):
assert_image_equal(rt, src.convert("RGB"))
else:
assert_image_equal(rt, src)
if mode == "1":
# BW appears to not save correctly on Qt
# kicks out errors on console:
# libpng warning: Invalid color type/bit depth combination
# in IHDR
# libpng error: Invalid IHDR data
return
# Test saving the file
tempfile = str(tmp_path / f"temp_{mode}.png")
data.save(tempfile)
# Check that it actually worked.
assert_image_equal_tofile(src, tempfile)