Pillow/Tests/test_file_spider.py
2023-02-06 19:27:19 +00:00

160 lines
3.2 KiB
Python

import tempfile
import warnings
from io import BytesIO
import pytest
from PIL import Image, ImageSequence, SpiderImagePlugin
from .helper import assert_image_equal_tofile, hopper, is_pypy
TEST_FILE = "Tests/images/hopper.spider"
def test_sanity():
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():
def open():
im = Image.open(TEST_FILE)
im.load()
pytest.warns(ResourceWarning, open)
def test_closed_file():
with warnings.catch_warnings():
im = Image.open(TEST_FILE)
im.load()
im.close()
def test_context_manager():
with warnings.catch_warnings():
with Image.open(TEST_FILE) as im:
im.load()
def test_save(tmp_path):
# Arrange
temp = str(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():
# 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():
assert SpiderImagePlugin.isSpiderImage(TEST_FILE)
def test_tell():
# Arrange
with Image.open(TEST_FILE) as im:
# Act
index = im.tell()
# Assert
assert index == 0
def test_n_frames():
with Image.open(TEST_FILE) as im:
assert im.n_frames == 1
assert not im.is_animated
def test_load_image_series():
# 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 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():
# Arrange
file_list = None
# Act
img_list = SpiderImagePlugin.loadImageSeries(file_list)
# Assert
assert img_list is None
def test_is_int_not_a_number():
# Arrange
not_a_number = "a"
# Act
ret = SpiderImagePlugin.isInt(not_a_number)
# Assert
assert ret == 0
def test_invalid_file():
invalid_file = "Tests/images/invalid.spider"
with pytest.raises(OSError):
with Image.open(invalid_file):
pass
def test_nonstack_file():
with Image.open(TEST_FILE) as im:
with pytest.raises(EOFError):
im.seek(0)
def test_nonstack_dos():
with Image.open(TEST_FILE) as im:
for i, frame in enumerate(ImageSequence.Iterator(im)):
assert i <= 1, "Non-stack DOS file test failed"
# for issue #4093
def test_odd_size():
data = BytesIO()
width = 100
im = Image.new("F", (width, 64))
im.save(data, format="SPIDER")
data.seek(0)
assert_image_equal_tofile(im, data)