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Improve the error message when importing ImageGrab on non-Windows (#901)
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parent
1ecc3195d9
commit
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@ -17,6 +17,9 @@
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from PIL import Image
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import sys
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if sys.platform != "win32":
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raise ImportError("ImageGrab is Windows only")
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try:
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# built-in driver (1.1.3 and later)
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@ -40,7 +43,7 @@ def grab(bbox=None):
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def grabclipboard():
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debug = 0 # temporary interface
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debug = 0 # temporary interface
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data = Image.core.grabclipboard(debug)
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if isinstance(data, bytes):
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from PIL import BmpImagePlugin
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@ -1,5 +1,8 @@
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from helper import unittest, PillowTestCase
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import exceptions
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import sys
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try:
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from PIL import ImageGrab
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@ -19,6 +22,28 @@ except ImportError:
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self.skipTest("ImportError")
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class TestImageGrabImport(PillowTestCase):
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def test_import(self):
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# Arrange
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exception = None
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# Act
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try:
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from PIL import ImageGrab
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ImageGrab.__name__ # dummy to prevent Pyflakes warning
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except Exception as exception:
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pass
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# Assert
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if sys.platform == 'win32':
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self.assertIsNone(exception, None)
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else:
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self.assertIsInstance(exception, exceptions.ImportError)
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self.assertEqual(exception.message,
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"ImageGrab is Windows only")
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if __name__ == '__main__':
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unittest.main()
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