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https://github.com/python-pillow/Pillow.git
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150 lines
3.7 KiB
Python
150 lines
3.7 KiB
Python
import tempfile
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import unittest
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from io import BytesIO
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import pytest
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from PIL import Image, ImageSequence, SpiderImagePlugin
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from .helper import PillowTestCase, assert_image_equal, hopper, is_pypy
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TEST_FILE = "Tests/images/hopper.spider"
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class TestImageSpider(PillowTestCase):
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def test_sanity(self):
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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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@unittest.skipIf(is_pypy(), "Requires CPython")
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def test_unclosed_file(self):
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def open():
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im = Image.open(TEST_FILE)
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im.load()
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pytest.warns(ResourceWarning, open)
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def test_closed_file(self):
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def open():
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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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pytest.warns(None, open)
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def test_context_manager(self):
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def open():
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with Image.open(TEST_FILE) as im:
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im.load()
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pytest.warns(None, open)
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def test_save(self):
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# Arrange
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temp = self.tempfile("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(self):
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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_isSpiderImage(self):
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assert SpiderImagePlugin.isSpiderImage(TEST_FILE)
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def test_tell(self):
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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(self):
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with Image.open(TEST_FILE) as im:
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assert im.n_frames == 1
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assert not im.is_animated
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def test_loadImageSeries(self):
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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 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_loadImageSeries_no_input(self):
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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_isInt_not_a_number(self):
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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(self):
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invalid_file = "Tests/images/invalid.spider"
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with pytest.raises(IOError):
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Image.open(invalid_file)
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def test_nonstack_file(self):
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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(self):
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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(self):
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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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