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from __future__ import annotations
import tempfile
import warnings
from io import BytesIO
from pathlib import Path
import pytest
from PIL import Image, SpiderImagePlugin
from .helper import assert_image_equal, hopper, is_pypy
TEST_FILE = "Tests/images/hopper.spider"
def test_sanity() -> None:
with Image.open(TEST_FILE) as im:
im.load()
assert im.mode == "F"
assert im.size == (128, 128)
assert im.format == "SPIDER"
@pytest.mark.skipif(is_pypy(), reason="Requires CPython")
def test_unclosed_file() -> None:
def open_test_image() -> None:
im = Image.open(TEST_FILE)
im.load()
with pytest.warns(ResourceWarning):
open_test_image()
def test_closed_file() -> None:
with warnings.catch_warnings():
warnings.simplefilter("error")
im = Image.open(TEST_FILE)
im.load()
im.close()
def test_context_manager() -> None:
with warnings.catch_warnings():
warnings.simplefilter("error")
with Image.open(TEST_FILE) as im:
im.load()
def test_save(tmp_path: Path) -> None:
# Arrange
temp = tmp_path / "temp.spider"
im = hopper()
# Act
im.save(temp, "SPIDER")
# Assert
with Image.open(temp) as im2:
assert im2.mode == "F"
assert im2.size == (128, 128)
assert im2.format == "SPIDER"
def test_tempfile() -> None:
# Arrange
im = hopper()
# Act
with tempfile.TemporaryFile() as fp:
im.save(fp, "SPIDER")
# Assert
fp.seek(0)
with Image.open(fp) as reloaded:
assert reloaded.mode == "F"
assert reloaded.size == (128, 128)
assert reloaded.format == "SPIDER"
def test_is_spider_image() -> None:
assert SpiderImagePlugin.isSpiderImage(TEST_FILE)
def test_tell() -> None:
# Arrange
with Image.open(TEST_FILE) as im:
# Act
index = im.tell()
# Assert
assert index == 0
def test_n_frames() -> None:
with Image.open(TEST_FILE) as im:
assert isinstance(im, SpiderImagePlugin.SpiderImageFile)
assert im.n_frames == 1
assert not im.is_animated
def test_load_image_series() -> None:
# Arrange
not_spider_file = "Tests/images/hopper.ppm"
file_list = [TEST_FILE, not_spider_file, "path/not_found.ext"]
# Act
img_list = SpiderImagePlugin.loadImageSeries(file_list)
# Assert
assert img_list is not None
assert len(img_list) == 1
assert isinstance(img_list[0], Image.Image)
assert img_list[0].size == (128, 128)
def test_load_image_series_no_input() -> None:
# Arrange
file_list = None
# Act
img_list = SpiderImagePlugin.loadImageSeries(file_list)
# Assert
assert img_list is None
def test_is_int_not_a_number() -> None:
# Arrange
not_a_number = "a"
# Act
ret = SpiderImagePlugin.isInt(not_a_number)
# Assert
assert ret == 0
def test_invalid_file() -> None:
invalid_file = "Tests/images/invalid.spider"
with pytest.raises(OSError):
with Image.open(invalid_file):
pass
def test_nonstack_file() -> None:
with Image.open(TEST_FILE) as im:
with pytest.raises(EOFError):
im.seek(0)
def test_nonstack_dos() -> None:
with Image.open(TEST_FILE) as im:
with pytest.raises(EOFError):
im.seek(0)
# for issue #4093
def test_odd_size() -> None:
data = BytesIO()
width = 100
im = Image.new("F", (width, 64))
im.save(data, format="SPIDER")
data.seek(0)
with Image.open(data) as im2:
assert_image_equal(im, im2)
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