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Tests for writing lossless RGB and RGBA images

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wiredfool 2013-10-22 12:32:31 -07:00
parent 5c501b8f64
commit 27b1054b77
1 changed files with 47 additions and 0 deletions
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47
Tests/test_file_webp.py
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@ -66,6 +66,26 @@ def test_write_rgb():
assert_image_similar(image, target, 20.0)
def test_write_lossless_rgb():
temp_file = tempfile("temp.webp")
lena("RGB").save(temp_file, lossless=True)
image = Image.open(temp_file)
image.load()
assert_equal(image.mode, "RGB")
assert_equal(image.size, (128, 128))
assert_equal(image.format, "WEBP")
assert_no_exception(lambda: image.load())
assert_no_exception(lambda: image.getdata())
assert_image_equal(image, lena("RGB"))
def test_write_rgba():
"""
Can we write a RGBA mode file to webp without error. Does it have the bits we
@ -111,3 +131,30 @@ def test_read_rgba():
target = Image.open('Images/transparent.png')
assert_image_similar(image, target, 20.0)
def test_write_lossless_rgb():
temp_file = tempfile("temp.webp")
#temp_file = "temp.webp"
pil_image = lena('RGBA')
mask = Image.new("RGBA", (64, 64), (128,128,128,128))
pil_image.paste(mask, (0,0), mask) # add some partially transparent bits.
pil_image.save(temp_file, lossless=True)
# Visually checking the image in Chrome shows as expected.
# This is failing to read...
image = Image.open(temp_file)
image.load()
assert_equal(image.mode, "RGBA")
assert_equal(image.size, pil_image.size)
assert_equal(image.format, "WEBP")
assert_no_exception(lambda: image.load())
assert_no_exception(lambda: image.getdata())
assert_image_equal(image, pil_image)