mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-26 01:46:18 +03:00
85 lines
2.2 KiB
Python
85 lines
2.2 KiB
Python
import unittest
|
|
|
|
import pytest
|
|
from PIL import DcxImagePlugin, Image
|
|
|
|
from .helper import PillowTestCase, assert_image_equal, hopper, is_pypy
|
|
|
|
# Created with ImageMagick: convert hopper.ppm hopper.dcx
|
|
TEST_FILE = "Tests/images/hopper.dcx"
|
|
|
|
|
|
class TestFileDcx(PillowTestCase):
|
|
def test_sanity(self):
|
|
# Arrange
|
|
|
|
# Act
|
|
with Image.open(TEST_FILE) as im:
|
|
|
|
# Assert
|
|
self.assertEqual(im.size, (128, 128))
|
|
self.assertIsInstance(im, DcxImagePlugin.DcxImageFile)
|
|
orig = hopper()
|
|
assert_image_equal(im, orig)
|
|
|
|
@unittest.skipIf(is_pypy(), "Requires CPython")
|
|
def test_unclosed_file(self):
|
|
def open():
|
|
im = Image.open(TEST_FILE)
|
|
im.load()
|
|
|
|
pytest.warns(ResourceWarning, open)
|
|
|
|
def test_closed_file(self):
|
|
def open():
|
|
im = Image.open(TEST_FILE)
|
|
im.load()
|
|
im.close()
|
|
|
|
pytest.warns(None, open)
|
|
|
|
def test_context_manager(self):
|
|
def open():
|
|
with Image.open(TEST_FILE) as im:
|
|
im.load()
|
|
|
|
pytest.warns(None, open)
|
|
|
|
def test_invalid_file(self):
|
|
with open("Tests/images/flower.jpg", "rb") as fp:
|
|
self.assertRaises(SyntaxError, DcxImagePlugin.DcxImageFile, fp)
|
|
|
|
def test_tell(self):
|
|
# Arrange
|
|
with Image.open(TEST_FILE) as im:
|
|
|
|
# Act
|
|
frame = im.tell()
|
|
|
|
# Assert
|
|
self.assertEqual(frame, 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_eoferror(self):
|
|
with Image.open(TEST_FILE) as im:
|
|
n_frames = im.n_frames
|
|
|
|
# Test seeking past the last frame
|
|
self.assertRaises(EOFError, im.seek, n_frames)
|
|
self.assertLess(im.tell(), n_frames)
|
|
|
|
# Test that seeking to the last frame does not raise an error
|
|
im.seek(n_frames - 1)
|
|
|
|
def test_seek_too_far(self):
|
|
# Arrange
|
|
with Image.open(TEST_FILE) as im:
|
|
frame = 999 # too big on purpose
|
|
|
|
# Act / Assert
|
|
self.assertRaises(EOFError, im.seek, frame)
|