Pillow/Tests/test_file_im.py

52 lines
1.2 KiB
Python

from helper import unittest, PillowTestCase, hopper
from PIL import Image, ImImagePlugin
# sample im
TEST_IM = "Tests/images/hopper.im"
class TestFileIm(PillowTestCase):
def test_sanity(self):
im = Image.open(TEST_IM)
im.load()
self.assertEqual(im.mode, "RGB")
self.assertEqual(im.size, (128, 128))
self.assertEqual(im.format, "IM")
def test_n_frames(self):
im = Image.open(TEST_IM)
self.assertEqual(im.n_frames, 1)
self.assertFalse(im.is_animated)
def test_eoferror(self):
im = Image.open(TEST_IM)
n_frames = im.n_frames
while True:
n_frames -= 1
try:
im.seek(n_frames)
break
except EOFError:
self.assertTrue(im.tell() < n_frames)
def test_roundtrip(self):
out = self.tempfile('temp.im')
im = hopper()
im.save(out)
reread = Image.open(out)
self.assert_image_equal(reread, im)
def test_invalid_file(self):
invalid_file = "Tests/images/flower.jpg"
self.assertRaises(SyntaxError,
lambda: ImImagePlugin.ImImageFile(invalid_file))
if __name__ == '__main__':
unittest.main()