Pillow/Tests/large_memory_numpy_test.py

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import sys
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from helper import unittest, PillowTestCase
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# This test is not run automatically.
#
# It requires > 2gb memory for the >2 gigapixel image generated in the
# second test. Running this automatically would amount to a denial of
# service on our testing infrastructure. I expect this test to fail
# on any 32 bit machine, as well as any smallish things (like
# Raspberry Pis).
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from PIL import Image
try:
import numpy as np
except:
sys.exit("Skipping: Numpy not installed")
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YDIM = 32769
XDIM = 48000
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@unittest.skipIf(sys.maxsize <= 2**32, "requires 64 bit system")
class LargeMemoryNumpyTest(PillowTestCase):
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def _write_png(self, xdim, ydim):
dtype = np.uint8
a = np.zeros((xdim, ydim), dtype=dtype)
f = self.tempfile('temp.png')
im = Image.fromarray(a, 'L')
im.save(f)
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def test_large(self):
""" succeeded prepatch"""
self._write_png(XDIM, YDIM)
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def test_2gpx(self):
"""failed prepatch"""
self._write_png(XDIM, XDIM)
if __name__ == '__main__':
unittest.main()
# End of file