Pillow/Tests/test_imagegrab.py

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from .helper import PillowTestCase
import sys
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import subprocess
try:
from PIL import ImageGrab
class TestImageGrab(PillowTestCase):
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def test_grab(self):
for im in [
ImageGrab.grab(),
ImageGrab.grab(include_layered_windows=True)
]:
self.assert_image(im, im.mode, im.size)
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def test_grabclipboard(self):
if sys.platform == "darwin":
subprocess.call(['screencapture', '-cx'])
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else:
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()
im = ImageGrab.grabclipboard()
self.assert_image(im, im.mode, im.size)
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except ImportError:
class TestImageGrab(PillowTestCase):
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def test_skip(self):
self.skipTest("ImportError")
class TestImageGrabImport(PillowTestCase):
def test_import(self):
# Arrange
exception = None
# Act
try:
from PIL import ImageGrab
ImageGrab.__name__ # dummy to prevent Pyflakes warning
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except Exception as e:
exception = e
# Assert
if sys.platform in ["win32", "darwin"]:
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self.assertIsNone(exception)
else:
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self.assertIsInstance(exception, ImportError)
self.assertEqual(str(exception),
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"ImageGrab is macOS and Windows only")