71 lines
2.5 KiB
Python
71 lines
2.5 KiB
Python
#!/usr/bin/env python
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from nose.tools import *
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from utilities import execution_path, save_data, contains_word
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import os, mapnik
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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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def test_multi_tile_policy():
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srs = '+proj=longlat +ellps=WGS84 +datum=WGS84 +no_defs'
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lyr = mapnik.Layer('raster')
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if 'raster' in mapnik.DatasourceCache.instance().plugin_names():
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lyr.datasource = mapnik.Raster(
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file = '../data/raster_tiles/${x}/${y}.tif',
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lox = -180,
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loy = -90,
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hix = 180,
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hiy = 90,
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multi = 1,
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tile_size = 256,
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x_width = 2,
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y_width = 2
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)
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lyr.srs = srs
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_map = mapnik.Map(256, 256, srs)
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style = mapnik.Style()
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rule = mapnik.Rule()
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sym = mapnik.RasterSymbolizer()
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rule.symbols.append(sym)
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style.rules.append(rule)
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_map.append_style('foo', style)
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lyr.styles.append('foo')
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_map.layers.append(lyr)
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_map.zoom_to_box(lyr.envelope())
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im = mapnik.Image(_map.width, _map.height)
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mapnik.render(_map, im)
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save_data('test_multi_tile_policy.png', im.tostring('png'))
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# test green chunk
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eq_(im.view(0,64,1,1).tostring(), '\x00\xff\x00\xff')
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eq_(im.view(127,64,1,1).tostring(), '\x00\xff\x00\xff')
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eq_(im.view(0,127,1,1).tostring(), '\x00\xff\x00\xff')
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eq_(im.view(127,127,1,1).tostring(), '\x00\xff\x00\xff')
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# test blue chunk
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eq_(im.view(128,64,1,1).tostring(), '\x00\x00\xff\xff')
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eq_(im.view(255,64,1,1).tostring(), '\x00\x00\xff\xff')
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eq_(im.view(128,127,1,1).tostring(), '\x00\x00\xff\xff')
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eq_(im.view(255,127,1,1).tostring(), '\x00\x00\xff\xff')
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# test red chunk
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eq_(im.view(0,128,1,1).tostring(), '\xff\x00\x00\xff')
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eq_(im.view(127,128,1,1).tostring(), '\xff\x00\x00\xff')
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eq_(im.view(0,191,1,1).tostring(), '\xff\x00\x00\xff')
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eq_(im.view(127,191,1,1).tostring(), '\xff\x00\x00\xff')
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# test magenta chunk
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eq_(im.view(128,128,1,1).tostring(), '\xff\x00\xff\xff')
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eq_(im.view(255,128,1,1).tostring(), '\xff\x00\xff\xff')
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eq_(im.view(128,191,1,1).tostring(), '\xff\x00\xff\xff')
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eq_(im.view(255,191,1,1).tostring(), '\xff\x00\xff\xff')
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if __name__ == "__main__":
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setup()
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[eval(run)() for run in dir() if 'test_' in run]
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