Pillow/Tests/test_file_im.py
Jon Dufresne d50445ff30 Introduce isort to automate import ordering and formatting
Similar to the recent adoption of Black. isort is a Python utility to
sort imports alphabetically and automatically separate into sections. By
using isort, contributors can quickly and automatically conform to the
projects style without thinking. Just let the tool do it.

Uses the configuration recommended by the Black to avoid conflicts of
style.

Rewrite TestImageQt.test_deprecated to no rely on import order.
2019-07-06 16:11:35 -07:00

71 lines
1.8 KiB
Python

from PIL import Image, ImImagePlugin
from .helper import PillowTestCase, hopper
# 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_unclosed_file(self):
def open():
im = Image.open(TEST_IM)
im.load()
self.assert_warning(None, open)
def test_tell(self):
# Arrange
im = Image.open(TEST_IM)
# Act
frame = im.tell()
# Assert
self.assertEqual(frame, 0)
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
# 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_roundtrip(self):
for mode in ["RGB", "P", "PA"]:
out = self.tempfile("temp.im")
im = hopper(mode)
im.save(out)
reread = Image.open(out)
self.assert_image_equal(reread, im)
def test_save_unsupported_mode(self):
out = self.tempfile("temp.im")
im = hopper("HSV")
self.assertRaises(ValueError, im.save, out)
def test_invalid_file(self):
invalid_file = "Tests/images/flower.jpg"
self.assertRaises(SyntaxError, ImImagePlugin.ImImageFile, invalid_file)
def test_number(self):
self.assertEqual(1.2, ImImagePlugin.number("1.2"))