Pillow/Tests/test_file_spider.py
2020-01-14 20:20:30 +11:00

147 lines
3.8 KiB
Python

import tempfile
import unittest
from io import BytesIO
from PIL import Image, ImageSequence, SpiderImagePlugin
from .helper import PillowTestCase, hopper, is_pypy
TEST_FILE = "Tests/images/hopper.spider"
class TestImageSpider(PillowTestCase):
def test_sanity(self):
with Image.open(TEST_FILE) as im:
im.load()
self.assertEqual(im.mode, "F")
self.assertEqual(im.size, (128, 128))
self.assertEqual(im.format, "SPIDER")
@unittest.skipIf(is_pypy(), "Requires CPython")
def test_unclosed_file(self):
def open():
im = Image.open(TEST_FILE)
im.load()
self.assert_warning(ResourceWarning, open)
def test_closed_file(self):
def open():
im = Image.open(TEST_FILE)
im.load()
im.close()
self.assert_warning(None, open)
def test_context_manager(self):
def open():
with Image.open(TEST_FILE) as im:
im.load()
self.assert_warning(None, open)
def test_save(self):
# Arrange
temp = self.tempfile("temp.spider")
im = hopper()
# Act
im.save(temp, "SPIDER")
# Assert
with Image.open(temp) as im2:
self.assertEqual(im2.mode, "F")
self.assertEqual(im2.size, (128, 128))
self.assertEqual(im2.format, "SPIDER")
def test_tempfile(self):
# Arrange
im = hopper()
# Act
with tempfile.TemporaryFile() as fp:
im.save(fp, "SPIDER")
# Assert
fp.seek(0)
with Image.open(fp) as reloaded:
self.assertEqual(reloaded.mode, "F")
self.assertEqual(reloaded.size, (128, 128))
self.assertEqual(reloaded.format, "SPIDER")
def test_isSpiderImage(self):
self.assertTrue(SpiderImagePlugin.isSpiderImage(TEST_FILE))
def test_tell(self):
# Arrange
with Image.open(TEST_FILE) as im:
# Act
index = im.tell()
# Assert
self.assertEqual(index, 0)
def test_n_frames(self):
with Image.open(TEST_FILE) as im:
self.assertEqual(im.n_frames, 1)
self.assertFalse(im.is_animated)
def test_loadImageSeries(self):
# 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
self.assertEqual(len(img_list), 1)
self.assertIsInstance(img_list[0], Image.Image)
self.assertEqual(img_list[0].size, (128, 128))
def test_loadImageSeries_no_input(self):
# Arrange
file_list = None
# Act
img_list = SpiderImagePlugin.loadImageSeries(file_list)
# Assert
self.assertIsNone(img_list)
def test_isInt_not_a_number(self):
# Arrange
not_a_number = "a"
# Act
ret = SpiderImagePlugin.isInt(not_a_number)
# Assert
self.assertEqual(ret, 0)
def test_invalid_file(self):
invalid_file = "Tests/images/invalid.spider"
self.assertRaises(IOError, Image.open, invalid_file)
def test_nonstack_file(self):
with Image.open(TEST_FILE) as im:
self.assertRaises(EOFError, im.seek, 0)
def test_nonstack_dos(self):
with Image.open(TEST_FILE) as im:
for i, frame in enumerate(ImageSequence.Iterator(im)):
self.assertLessEqual(i, 1, "Non-stack DOS file test failed")
# for issue #4093
def test_odd_size(self):
data = BytesIO()
width = 100
im = Image.new("F", (width, 64))
im.save(data, format="SPIDER")
data.seek(0)
with Image.open(data) as im2:
self.assert_image_equal(im, im2)