mirror of
https://github.com/python-pillow/Pillow.git
synced 2024-12-25 17:36:18 +03:00
269 lines
7.6 KiB
Python
269 lines
7.6 KiB
Python
from helper import unittest, PillowTestCase, hopper
|
|
|
|
from PIL import Image
|
|
import os
|
|
import sys
|
|
|
|
|
|
class TestImage(PillowTestCase):
|
|
|
|
def test_sanity(self):
|
|
|
|
im = Image.new("L", (100, 100))
|
|
self.assertEqual(
|
|
repr(im)[:45], "<PIL.Image.Image image mode=L size=100x100 at")
|
|
self.assertEqual(im.mode, "L")
|
|
self.assertEqual(im.size, (100, 100))
|
|
|
|
im = Image.new("RGB", (100, 100))
|
|
self.assertEqual(
|
|
repr(im)[:45], "<PIL.Image.Image image mode=RGB size=100x100 ")
|
|
self.assertEqual(im.mode, "RGB")
|
|
self.assertEqual(im.size, (100, 100))
|
|
|
|
Image.new("L", (100, 100), None)
|
|
im2 = Image.new("L", (100, 100), 0)
|
|
im3 = Image.new("L", (100, 100), "black")
|
|
|
|
self.assertEqual(im2.getcolors(), [(10000, 0)])
|
|
self.assertEqual(im3.getcolors(), [(10000, 0)])
|
|
|
|
self.assertRaises(ValueError, lambda: Image.new("X", (100, 100)))
|
|
# self.assertRaises(
|
|
# MemoryError, lambda: Image.new("L", (1000000, 1000000)))
|
|
|
|
def test_width_height(self):
|
|
im = Image.new("RGB", (1, 2))
|
|
self.assertEqual(im.width, 1)
|
|
self.assertEqual(im.height, 2)
|
|
|
|
im.size = (3, 4)
|
|
self.assertEqual(im.width, 3)
|
|
self.assertEqual(im.height, 4)
|
|
|
|
def test_invalid_image(self):
|
|
if str is bytes:
|
|
import StringIO
|
|
im = StringIO.StringIO('')
|
|
else:
|
|
import io
|
|
im = io.BytesIO(b'')
|
|
self.assertRaises(IOError, lambda: Image.open(im))
|
|
|
|
@unittest.skipIf(sys.version_info < (3, 4),
|
|
"pathlib only available in Python 3.4 or later")
|
|
def test_pathlib(self):
|
|
from pathlib import Path
|
|
im = Image.open(Path("Tests/images/hopper.jpg"))
|
|
self.assertEqual(im.mode, "RGB")
|
|
self.assertEqual(im.size, (128, 128))
|
|
|
|
temp_file = self.tempfile("temp.jpg")
|
|
if os.path.exists(temp_file):
|
|
os.remove(temp_file)
|
|
im.save(Path(temp_file))
|
|
|
|
def test_tempfile(self):
|
|
# see #1460, pathlib support breaks tempfile.TemporaryFile on py27
|
|
# Will error out on save on 3.0.0
|
|
import tempfile
|
|
im = hopper()
|
|
fp = tempfile.TemporaryFile()
|
|
im.save(fp, 'JPEG')
|
|
fp.seek(0)
|
|
reloaded = Image.open(fp)
|
|
self.assert_image_similar(im, reloaded, 20)
|
|
|
|
def test_internals(self):
|
|
|
|
im = Image.new("L", (100, 100))
|
|
im.readonly = 1
|
|
im._copy()
|
|
self.assertFalse(im.readonly)
|
|
|
|
im.readonly = 1
|
|
im.paste(0, (0, 0, 100, 100))
|
|
self.assertFalse(im.readonly)
|
|
|
|
test_file = self.tempfile("temp.ppm")
|
|
im._dump(test_file)
|
|
|
|
def test_comparison_with_other_type(self):
|
|
# Arrange
|
|
item = Image.new('RGB', (25, 25), '#000')
|
|
num = 12
|
|
|
|
# Act/Assert
|
|
# Shouldn't cause AttributeError (#774)
|
|
self.assertFalse(item is None)
|
|
self.assertFalse(item == None)
|
|
self.assertFalse(item == num)
|
|
|
|
def test_expand_x(self):
|
|
# Arrange
|
|
im = hopper()
|
|
orig_size = im.size
|
|
xmargin = 5
|
|
|
|
# Act
|
|
im = im._expand(xmargin)
|
|
|
|
# Assert
|
|
self.assertEqual(im.size[0], orig_size[0] + 2*xmargin)
|
|
self.assertEqual(im.size[1], orig_size[1] + 2*xmargin)
|
|
|
|
def test_expand_xy(self):
|
|
# Arrange
|
|
im = hopper()
|
|
orig_size = im.size
|
|
xmargin = 5
|
|
ymargin = 3
|
|
|
|
# Act
|
|
im = im._expand(xmargin, ymargin)
|
|
|
|
# Assert
|
|
self.assertEqual(im.size[0], orig_size[0] + 2*xmargin)
|
|
self.assertEqual(im.size[1], orig_size[1] + 2*ymargin)
|
|
|
|
def test_getbands(self):
|
|
# Arrange
|
|
im = hopper()
|
|
|
|
# Act
|
|
bands = im.getbands()
|
|
|
|
# Assert
|
|
self.assertEqual(bands, ('R', 'G', 'B'))
|
|
|
|
def test_getbbox(self):
|
|
# Arrange
|
|
im = hopper()
|
|
|
|
# Act
|
|
bbox = im.getbbox()
|
|
|
|
# Assert
|
|
self.assertEqual(bbox, (0, 0, 128, 128))
|
|
|
|
def test_ne(self):
|
|
# Arrange
|
|
im1 = Image.new('RGB', (25, 25), 'black')
|
|
im2 = Image.new('RGB', (25, 25), 'white')
|
|
|
|
# Act / Assert
|
|
self.assertTrue(im1 != im2)
|
|
|
|
def test_alpha_composite(self):
|
|
# http://stackoverflow.com/questions/3374878
|
|
# Arrange
|
|
from PIL import ImageDraw
|
|
|
|
expected_colors = sorted([
|
|
(1122, (128, 127, 0, 255)),
|
|
(1089, (0, 255, 0, 255)),
|
|
(3300, (255, 0, 0, 255)),
|
|
(1156, (170, 85, 0, 192)),
|
|
(1122, (0, 255, 0, 128)),
|
|
(1122, (255, 0, 0, 128)),
|
|
(1089, (0, 255, 0, 0))])
|
|
|
|
dst = Image.new('RGBA', size=(100, 100), color=(0, 255, 0, 255))
|
|
draw = ImageDraw.Draw(dst)
|
|
draw.rectangle((0, 33, 100, 66), fill=(0, 255, 0, 128))
|
|
draw.rectangle((0, 67, 100, 100), fill=(0, 255, 0, 0))
|
|
src = Image.new('RGBA', size=(100, 100), color=(255, 0, 0, 255))
|
|
draw = ImageDraw.Draw(src)
|
|
draw.rectangle((33, 0, 66, 100), fill=(255, 0, 0, 128))
|
|
draw.rectangle((67, 0, 100, 100), fill=(255, 0, 0, 0))
|
|
|
|
# Act
|
|
img = Image.alpha_composite(dst, src)
|
|
|
|
# Assert
|
|
img_colors = sorted(img.getcolors())
|
|
self.assertEqual(img_colors, expected_colors)
|
|
|
|
def test_effect_mandelbrot(self):
|
|
# Arrange
|
|
size = (512, 512)
|
|
extent = (-3, -2.5, 2, 2.5)
|
|
quality = 100
|
|
|
|
# Act
|
|
im = Image.effect_mandelbrot(size, extent, quality)
|
|
|
|
# Assert
|
|
self.assertEqual(im.size, (512, 512))
|
|
im2 = Image.open('Tests/images/effect_mandelbrot.png')
|
|
self.assert_image_equal(im, im2)
|
|
|
|
def test_effect_mandelbrot_bad_arguments(self):
|
|
# Arrange
|
|
size = (512, 512)
|
|
# Get coordinates the wrong way round:
|
|
extent = (+3, +2.5, -2, -2.5)
|
|
# Quality < 2:
|
|
quality = 1
|
|
|
|
# Act/Assert
|
|
self.assertRaises(
|
|
ValueError,
|
|
lambda: Image.effect_mandelbrot(size, extent, quality))
|
|
|
|
def test_effect_noise(self):
|
|
# Arrange
|
|
size = (100, 100)
|
|
sigma = 128
|
|
|
|
# Act
|
|
im = Image.effect_noise(size, sigma)
|
|
|
|
# Assert
|
|
self.assertEqual(im.size, (100, 100))
|
|
self.assertEqual(im.mode, "L")
|
|
self.assertNotEqual(im.getpixel((0, 0)), im.getpixel((0, 1)))
|
|
|
|
def test_effect_spread(self):
|
|
# Arrange
|
|
im = hopper()
|
|
distance = 10
|
|
|
|
# Act
|
|
im2 = im.effect_spread(distance)
|
|
|
|
# Assert
|
|
self.assertEqual(im.size, (128, 128))
|
|
im3 = Image.open('Tests/images/effect_spread.png')
|
|
self.assert_image_similar(im2, im3, 110)
|
|
|
|
def test_check_size(self):
|
|
# Checking that the _check_size function throws value errors when we want it to.
|
|
with self.assertRaises(ValueError):
|
|
Image.new('RGB', 0) # not a tuple
|
|
with self.assertRaises(ValueError):
|
|
Image.new('RGB', (0,)) # Tuple too short
|
|
with self.assertRaises(ValueError):
|
|
Image.new('RGB', (0,0)) # w,h <= 0
|
|
|
|
self.assertTrue(Image.new('RGB', (1,1)))
|
|
# Should pass lists too
|
|
i = Image.new('RGB', [1,1])
|
|
self.assertEqual(type(i.size), tuple)
|
|
|
|
def test_storage_neg(self):
|
|
# Storage.c accepted negative values for xsize, ysize. Was
|
|
# test_neg_ppm, but the core function for that has been
|
|
# removed Calling directly into core to test the error in
|
|
# Storage.c, rather than the size check above
|
|
|
|
with self.assertRaises(ValueError):
|
|
Image.core.fill('RGB', (2,-2), (0,0,0))
|
|
|
|
|
|
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|