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from __future__ import annotations
import sys
from pathlib import Path
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).
np = pytest.importorskip("numpy", reason="NumPy not installed")
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:
dtype = np.uint8
a = np.zeros((xdim, ydim), dtype=dtype)
f = tmp_path / "temp.png"
im = Image.fromarray(a, "L")
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)
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