Pillow/Tests/test_imageshow.py
2021-03-04 08:55:24 +11:00

82 lines
1.7 KiB
Python

import pytest
from PIL import Image, ImageShow
from .helper import hopper, is_win32, on_ci
def test_sanity():
dir(Image)
dir(ImageShow)
def test_register():
# Test registering a viewer that is not a class
ImageShow.register("not a class")
# Restore original state
ImageShow._viewers.pop()
@pytest.mark.parametrize(
"order",
[-1, 0],
)
def test_viewer_show(order):
class TestViewer(ImageShow.Viewer):
def show_image(self, image, **options):
self.methodCalled = True
return True
viewer = TestViewer()
ImageShow.register(viewer, order)
for mode in ("1", "I;16", "LA", "RGB", "RGBA"):
viewer.methodCalled = False
with hopper(mode) as im:
assert ImageShow.show(im)
assert viewer.methodCalled
# Restore original state
ImageShow._viewers.pop(0)
@pytest.mark.skipif(
not on_ci() or is_win32(),
reason="Only run on CIs; hangs on Windows CIs",
)
def test_show():
for mode in ("1", "I;16", "LA", "RGB", "RGBA"):
im = hopper(mode)
assert ImageShow.show(im)
def test_viewer():
viewer = ImageShow.Viewer()
assert viewer.get_format(None) is None
with pytest.raises(NotImplementedError):
viewer.get_command(None)
def test_viewers():
for viewer in ImageShow._viewers:
try:
viewer.get_command("test.jpg")
except NotImplementedError:
pass
def test_ipythonviewer():
pytest.importorskip("IPython", reason="IPython not installed")
for viewer in ImageShow._viewers:
if isinstance(viewer, ImageShow.IPythonViewer):
test_viewer = viewer
break
else:
assert False
im = hopper()
assert test_viewer.show(im) == 1