Pillow/Tests/test_imagegrab.py
2020-08-08 22:39:29 +03:00

100 lines
3.5 KiB
Python

import os
import subprocess
import sys
import pytest
from PIL import Image, ImageGrab
from .helper import assert_image, assert_image_equal_tofile, skip_unless_feature
class TestImageGrab:
@pytest.mark.skipif(
sys.platform not in ("win32", "darwin"), reason="requires Windows or macOS"
)
def test_grab(self):
for im in [
ImageGrab.grab(),
ImageGrab.grab(include_layered_windows=True),
ImageGrab.grab(all_screens=True),
]:
assert_image(im, im.mode, im.size)
im = ImageGrab.grab(bbox=(10, 20, 50, 80))
assert_image(im, im.mode, (40, 60))
@skip_unless_feature("xcb")
def test_grab_x11(self):
try:
if sys.platform not in ("win32", "darwin"):
im = ImageGrab.grab()
assert_image(im, im.mode, im.size)
im2 = ImageGrab.grab(xdisplay="")
assert_image(im2, im2.mode, im2.size)
except OSError as e:
pytest.skip(str(e))
@pytest.mark.skipif(Image.core.HAVE_XCB, reason="tests missing XCB")
def test_grab_no_xcb(self):
if sys.platform not in ("win32", "darwin"):
with pytest.raises(OSError) as e:
ImageGrab.grab()
assert str(e.value).startswith("Pillow was built without XCB support")
with pytest.raises(OSError) as e:
ImageGrab.grab(xdisplay="")
assert str(e.value).startswith("Pillow was built without XCB support")
@skip_unless_feature("xcb")
def test_grab_invalid_xdisplay(self):
with pytest.raises(OSError) as e:
ImageGrab.grab(xdisplay="error.test:0.0")
assert str(e.value).startswith("X connection failed")
def test_grabclipboard(self):
if sys.platform == "darwin":
subprocess.call(["screencapture", "-cx"])
elif sys.platform == "win32":
p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
p.stdin.write(
b"""[Reflection.Assembly]::LoadWithPartialName("System.Drawing")
[Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
$bmp = New-Object Drawing.Bitmap 200, 200
[Windows.Forms.Clipboard]::SetImage($bmp)"""
)
p.communicate()
else:
with pytest.raises(NotImplementedError) as e:
ImageGrab.grabclipboard()
assert str(e.value) == "ImageGrab.grabclipboard() is macOS and Windows only"
return
im = ImageGrab.grabclipboard()
assert_image(im, im.mode, im.size)
@pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
def test_grabclipboard_file(self):
p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
p.stdin.write(rb'Set-Clipboard -Path "Tests\images\hopper.gif"')
p.communicate()
im = ImageGrab.grabclipboard()
assert len(im) == 1
assert os.path.samefile(im[0], "Tests/images/hopper.gif")
@pytest.mark.skipif(sys.platform != "win32", reason="Windows only")
def test_grabclipboard_png(self):
p = subprocess.Popen(["powershell", "-command", "-"], stdin=subprocess.PIPE)
p.stdin.write(
rb"""$bytes = [System.IO.File]::ReadAllBytes("Tests\images\hopper.png")
$ms = new-object System.IO.MemoryStream(, $bytes)
[Reflection.Assembly]::LoadWithPartialName("System.Windows.Forms")
[Windows.Forms.Clipboard]::SetData("PNG", $ms)"""
)
p.communicate()
im = ImageGrab.grabclipboard()
assert_image_equal_tofile(im, "Tests/images/hopper.png")