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