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added write verification test

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wiredfool 2013-03-19 13:49:01 -07:00
parent 02931c4956
commit d678b97444
2 changed files with 14 additions and 9 deletions
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Tests/images/lena_webp_write.ppm Normal file
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Tests/test_file_webp.py
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@ -3,7 +3,8 @@ from tester import *
from PIL import Image
def test_read():
""" Can we write a webp without error. Does it have the bits we expect?"""
file = "Images/lena.webp"
im = Image.open(file)
@ -21,18 +22,22 @@ def test_read():
def test_write():
""" Can we write a webp without error. Does it have the bits we expect?"""
file = tempfile("temp.webp")
lena("RGB").save(file)
reloaded= Image.open(file)
reloaded.load()
assert_equal(reloaded.mode, "RGB")
assert_equal(reloaded.size, (128, 128))
assert_equal(reloaded.format, "WEBP")
assert_no_exception(lambda: reloaded.load())
assert_no_exception(lambda: reloaded.getdata())
im= Image.open(file)
im.load()
assert_equal(im.mode, "RGB")
assert_equal(im.size, (128, 128))
assert_equal(im.format, "WEBP")
assert_no_exception(lambda: im.load())
assert_no_exception(lambda: im.getdata())
# generated with: dwebp -ppm temp.webp -o lena_webp_write.ppm
target = Image.open('Tests/images/lena_webp_write.ppm')
assert_image_equal(im, target)