Pillow/Tests/check_imaging_leaks.py
2020-02-22 18:07:04 +02:00

47 lines
1.3 KiB
Python
Executable File

#!/usr/bin/env python
import unittest
from PIL import Image
from .helper import PillowTestCase, is_win32
min_iterations = 100
max_iterations = 10000
@unittest.skipIf(is_win32(), "requires Unix or macOS")
class TestImagingLeaks(PillowTestCase):
def _get_mem_usage(self):
from resource import getpagesize, getrusage, RUSAGE_SELF
mem = getrusage(RUSAGE_SELF).ru_maxrss
return mem * getpagesize() / 1024 / 1024
def _test_leak(self, min_iterations, max_iterations, fn, *args, **kwargs):
mem_limit = None
for i in range(max_iterations):
fn(*args, **kwargs)
mem = self._get_mem_usage()
if i < min_iterations:
mem_limit = mem + 1
continue
msg = "memory usage limit exceeded after %d iterations" % (i + 1)
assert mem <= mem_limit, msg
def test_leak_putdata(self):
im = Image.new("RGB", (25, 25))
self._test_leak(min_iterations, max_iterations, im.putdata, im.getdata())
def test_leak_getlist(self):
im = Image.new("P", (25, 25))
self._test_leak(
min_iterations,
max_iterations,
# Pass a new list at each iteration.
lambda: im.point(range(256)),
)
if __name__ == "__main__":
unittest.main()