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from __future__ import annotations
import sys
from pathlib import Path
from types import ModuleType
import pytest
from PIL import Image
# 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). It does succeed on a 3gb Ubuntu 12.04x64 VM on Python
# 2.7 and 3.2.
numpy: ModuleType | None
try:
import numpy
except ImportError:
numpy = None
YDIM = 32769
XDIM = 48000
pytestmark = pytest.mark.skipif(sys.maxsize <= 2**32, reason="requires 64-bit system")
def _write_png(tmp_path: Path, xdim: int, ydim: int) -> None:
f = tmp_path / "temp.png"
im = Image.new("L", (xdim, ydim), 0)
im.save(f)
def test_large(tmp_path: Path) -> None:
"""succeeded prepatch"""
_write_png(tmp_path, XDIM, YDIM)
def test_2gpx(tmp_path: Path) -> None:
"""failed prepatch"""
_write_png(tmp_path, XDIM, XDIM)
@pytest.mark.skipif(numpy is None, reason="Numpy is not installed")
def test_size_greater_than_int() -> None:
assert numpy is not None
arr = numpy.ndarray(shape=(16394, 16394))
Image.fromarray(arr)
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