162 lines
6.4 KiB
Python
162 lines
6.4 KiB
Python
#!/usr/bin/env python
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# -*- coding: utf-8 -*-
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import sys
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import os, mapnik
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from timeit import Timer, time
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from nose.tools import *
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from utilities import execution_path, run_all
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def setup():
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# All of the paths used are relative, if we run the tests
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# from another directory we need to chdir()
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os.chdir(execution_path('.'))
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if mapnik.has_webp():
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tmp_dir = '/tmp/mapnik-webp/'
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if not os.path.exists(tmp_dir):
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os.makedirs(tmp_dir)
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opts = [
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'webp',
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'webp:method=0',
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'webp:method=6',
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'webp:quality=64',
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'webp:alpha=false',
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'webp:partitions=3',
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'webp:preprocessing=1',
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'webp:partition_limit=50',
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'webp:pass=10',
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'webp:alpha_quality=50',
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'webp:alpha_filtering=2',
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'webp:alpha_compression=0',
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'webp:autofilter=0',
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'webp:filter_type=1:autofilter=1',
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'webp:filter_sharpness=4',
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'webp:filter_strength=50',
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'webp:sns_strength=50',
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'webp:segments=3',
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'webp:target_PSNR=.5',
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'webp:target_size=100'
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]
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def gen_filepath(name,format):
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return os.path.join('images/support/encoding-opts',name+'-'+format.replace(":","+")+'.webp')
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def test_quality_threshold():
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im = mapnik.Image(256,256)
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im.tostring('webp:quality=99.99000')
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im.tostring('webp:quality=0')
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im.tostring('webp:quality=0.001')
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@raises(RuntimeError)
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def test_quality_threshold_invalid():
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im = mapnik.Image(256,256)
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im.tostring('webp:quality=101')
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@raises(RuntimeError)
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def test_quality_threshold_invalid2():
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im = mapnik.Image(256,256)
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im.tostring('webp:quality=-1')
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generate = False
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def test_expected_encodings():
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fails = []
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try:
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for opt in opts:
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im = mapnik.Image(256,256)
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expected = gen_filepath('blank',opt)
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actual = os.path.join(tmp_dir,os.path.basename(expected))
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if generate or not os.path.exists(expected):
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print 'generating expected image %s' % expected
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im.save(expected,opt)
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im.save(actual,opt)
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try:
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expected_bytes = mapnik.Image.open(expected).tostring()
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except RuntimeError:
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# this will happen if libweb is old, since it cannot open images created by more recent webp
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print 'warning, cannot open webp expected image (your libwebp is likely too old)'
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continue
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if mapnik.Image.open(actual).tostring() != expected_bytes:
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fails.append('%s (actual) not == to %s (expected)' % (actual,expected))
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for opt in opts:
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im = mapnik.Image(256,256)
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im.background = mapnik.Color('green')
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expected = gen_filepath('solid',opt)
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actual = os.path.join(tmp_dir,os.path.basename(expected))
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if generate or not os.path.exists(expected):
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print 'generating expected image %s' % expected
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im.save(expected,opt)
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im.save(actual,opt)
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try:
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expected_bytes = mapnik.Image.open(expected).tostring()
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except RuntimeError:
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# this will happen if libweb is old, since it cannot open images created by more recent webp
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print 'warning, cannot open webp expected image (your libwebp is likely too old)'
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continue
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if mapnik.Image.open(actual).tostring() != expected_bytes:
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fails.append('%s (actual) not == to %s (expected)' % (actual,expected))
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for opt in opts:
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im = mapnik.Image.open('images/support/transparency/aerial_rgba.png')
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expected = gen_filepath('aerial_rgba',opt)
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actual = os.path.join(tmp_dir,os.path.basename(expected))
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if generate or not os.path.exists(expected):
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print 'generating expected image %s' % expected
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im.save(expected,opt)
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im.save(actual,opt)
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try:
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expected_bytes = mapnik.Image.open(expected).tostring()
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except RuntimeError:
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# this will happen if libweb is old, since it cannot open images created by more recent webp
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print 'warning, cannot open webp expected image (your libwebp is likely too old)'
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continue
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if mapnik.Image.open(actual).tostring() != expected_bytes:
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fails.append('%s (actual) not == to %s (expected)' % (actual,expected))
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# disabled to avoid failures on ubuntu when using old webp packages
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#eq_(fails,[],'\n'+'\n'.join(fails))
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except RuntimeError, e:
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print e
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def test_transparency_levels():
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try:
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# create partial transparency image
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im = mapnik.Image(256,256)
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im.background = mapnik.Color('rgba(255,255,255,.5)')
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c2 = mapnik.Color('rgba(255,255,0,.2)')
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c3 = mapnik.Color('rgb(0,255,255)')
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for y in range(0,im.height()/2):
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for x in range(0,im.width()/2):
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im.set_pixel(x,y,c2)
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for y in range(im.height()/2,im.height()):
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for x in range(im.width()/2,im.width()):
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im.set_pixel(x,y,c3)
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t0 = tmp_dir + 'white0-actual.webp'
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# octree
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format = 'webp'
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expected = 'images/support/transparency/white0.webp'
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if generate or not os.path.exists(expected):
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im.save('images/support/transparency/white0.webp')
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im.save(t0,format)
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im_in = mapnik.Image.open(t0)
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t0_len = len(im_in.tostring(format))
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try:
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expected_bytes = mapnik.Image.open(expected).tostring(format)
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except RuntimeError:
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# this will happen if libweb is old, since it cannot open images created by more recent webp
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print 'warning, cannot open webp expected image (your libwebp is likely too old)'
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return
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# disabled to avoid failures on ubuntu when using old webp packages
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#eq_(t0_len,len(expected_bytes))
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except RuntimeError, e:
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print e
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if __name__ == "__main__":
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setup()
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exit(run_all(eval(x) for x in dir() if x.startswith("test_")))
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