61 lines
1.8 KiB
Python
61 lines
1.8 KiB
Python
import os, mapnik
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from nose.tools import eq_
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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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def test_clearing_image_data():
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im = mapnik.Image(256,256)
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# make sure it equals itself
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bytes = im.tostring()
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eq_(im.tostring(),bytes)
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# set background, then clear
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im.background = mapnik.Color('green')
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eq_(im.tostring()!=bytes,True)
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# clear image, should now equal original
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im.clear()
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eq_(im.tostring(),bytes)
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def make_map():
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ds = mapnik.MemoryDatasource()
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context = mapnik.Context()
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context.push('Name')
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pixel_key = 1
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f = mapnik.Feature(context,pixel_key)
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f['Name'] = str(pixel_key)
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f.add_geometries_from_wkt('POLYGON ((0 0, 0 256, 256 256, 256 0, 0 0))')
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ds.add_feature(f)
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s = mapnik.Style()
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r = mapnik.Rule()
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symb = mapnik.PolygonSymbolizer()
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r.symbols.append(symb)
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s.rules.append(r)
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lyr = mapnik.Layer('Places')
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lyr.datasource = ds
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lyr.styles.append('places_labels')
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width,height = 256,256
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m = mapnik.Map(width,height)
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m.append_style('places_labels',s)
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m.layers.append(lyr)
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m.zoom_all()
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return m
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if mapnik.has_grid_renderer():
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def test_clearing_grid_data():
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g = mapnik.Grid(256,256)
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utf = g.encode()
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# make sure it equals itself
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eq_(g.encode(),utf)
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m = make_map()
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mapnik.render_layer(m,g,layer=0,fields=['__id__','Name'])
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eq_(g.encode()!=utf,True)
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# clear grid, should now match original
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g.clear()
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eq_(g.encode(),utf)
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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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