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tests: be more explicit about png encoding comparison formats

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This commit is contained in:
Dane Springmeyer 2013-10-03 23:37:19 -07:00
parent 805be3daa5
commit d17f897671
1 changed files with 10 additions and 4 deletions
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14
tests/python_tests/png_encoding_test.py
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@ -127,12 +127,18 @@ if mapnik.has_png():
def test_transparency_levels_aerial():
im = mapnik.Image.open('../data/images/12_654_1580.png')
im_in = mapnik.Image.open('./images/support/transparency/aerial_rgba.png')
eq_(len(im.tostring('png')),len(im_in.tostring('png')))
eq_(len(im.tostring('png8')),len(im_in.tostring('png8')))
eq_(len(im.tostring('png32')),len(im_in.tostring('png32')))
im_in = mapnik.Image.open('./images/support/transparency/aerial_rgb.png')
eq_(len(im.tostring('png')),len(im_in.tostring('png')))
eq_(len(im.tostring('png:t=0')),len(im_in.tostring('png:t=0')))
eq_(len(im.tostring('png:t=0')) == len(im_in.tostring('png')), False)
eq_(len(im.tostring('png32')),len(im_in.tostring('png32')))
eq_(len(im.tostring('png32:t=0')),len(im_in.tostring('png32:t=0')))
eq_(len(im.tostring('png32:t=0')) == len(im_in.tostring('png32')), False)
eq_(len(im.tostring('png8')),len(im_in.tostring('png8')))
eq_(len(im.tostring('png8:t=0')),len(im_in.tostring('png8:t=0')))
# unlike png32 paletted images without alpha will look the same even if no alpha is forced
eq_(len(im.tostring('png8:t=0')) == len(im_in.tostring('png8')), True)
eq_(len(im.tostring('png8:t=0:m=o')) == len(im_in.tostring('png8:m=o')), True)
if __name__ == "__main__":
setup()