Pillow/Tests/test_imagepath.py
Jon Dufresne e705cd1476 Fix dereferencing type-punned pointer will break strict-aliasing
Compiler warning appeared as:

src/path.c:574:22: warning: dereferencing type-punned pointer will break strict-aliasing rules [-Wstrict-aliasing]
                      Py_TYPE(&item)->tp_name);
                      ^~~~~~~

As item is already of type PyObject*, and the Py_TYPE macro is
equivalent to (((PyObject*)(o))->ob_type), no need for the dereference.

https://docs.python.org/3/c-api/structures.html#c.Py_TYPE
2018-04-03 20:42:03 -07:00

100 lines
3.1 KiB
Python

from helper import unittest, PillowTestCase
from PIL import ImagePath, Image
import array
import struct
class TestImagePath(PillowTestCase):
def test_path(self):
p = ImagePath.Path(list(range(10)))
# sequence interface
self.assertEqual(len(p), 5)
self.assertEqual(p[0], (0.0, 1.0))
self.assertEqual(p[-1], (8.0, 9.0))
self.assertEqual(list(p[:1]), [(0.0, 1.0)])
with self.assertRaises(TypeError) as cm:
p['foo']
self.assertEqual(
str(cm.exception),
"Path indices must be integers, not str")
self.assertEqual(
list(p),
[(0.0, 1.0), (2.0, 3.0), (4.0, 5.0), (6.0, 7.0), (8.0, 9.0)])
# method sanity check
self.assertEqual(
p.tolist(),
[(0.0, 1.0), (2.0, 3.0), (4.0, 5.0), (6.0, 7.0), (8.0, 9.0)])
self.assertEqual(
p.tolist(1),
[0.0, 1.0, 2.0, 3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0])
self.assertEqual(p.getbbox(), (0.0, 1.0, 8.0, 9.0))
self.assertEqual(p.compact(5), 2)
self.assertEqual(list(p), [(0.0, 1.0), (4.0, 5.0), (8.0, 9.0)])
p.transform((1, 0, 1, 0, 1, 1))
self.assertEqual(list(p), [(1.0, 2.0), (5.0, 6.0), (9.0, 10.0)])
# alternative constructors
p = ImagePath.Path([0, 1])
self.assertEqual(list(p), [(0.0, 1.0)])
p = ImagePath.Path([0.0, 1.0])
self.assertEqual(list(p), [(0.0, 1.0)])
p = ImagePath.Path([0, 1])
self.assertEqual(list(p), [(0.0, 1.0)])
p = ImagePath.Path([(0, 1)])
self.assertEqual(list(p), [(0.0, 1.0)])
p = ImagePath.Path(p)
self.assertEqual(list(p), [(0.0, 1.0)])
p = ImagePath.Path(p.tolist(0))
self.assertEqual(list(p), [(0.0, 1.0)])
p = ImagePath.Path(p.tolist(1))
self.assertEqual(list(p), [(0.0, 1.0)])
p = ImagePath.Path(array.array("f", [0, 1]))
self.assertEqual(list(p), [(0.0, 1.0)])
arr = array.array("f", [0, 1])
if hasattr(arr, 'tobytes'):
p = ImagePath.Path(arr.tobytes())
else:
p = ImagePath.Path(arr.tostring())
self.assertEqual(list(p), [(0.0, 1.0)])
def test_overflow_segfault(self):
# Some Pythons fail getting the argument as an integer, and it falls
# through to the sequence. Seeing this on 32-bit Windows.
with self.assertRaises((TypeError, MemoryError)):
# post patch, this fails with a memory error
x = evil()
# This fails due to the invalid malloc above,
# and segfaults
for i in range(200000):
if str is bytes:
x[i] = "0"*16
else:
x[i] = b'0'*16
class evil:
def __init__(self):
self.corrupt = Image.core.path(0x4000000000000000)
def __getitem__(self, i):
x = self.corrupt[i]
return struct.pack("dd", x[0], x[1])
def __setitem__(self, i, x):
self.corrupt[i] = struct.unpack("dd", x)
if __name__ == '__main__':
unittest.main()