114 lines
4.2 KiB
Python
114 lines
4.2 KiB
Python
#!/usr/bin/env python
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from nose.tools import *
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from utilities import execution_path
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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_that_datasources_exist():
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if len(mapnik.DatasourceCache.instance().plugin_names()) == 0:
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print '***NOTICE*** - no datasource plugins have been loaded'
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def test_field_listing():
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lyr = mapnik.Layer('test')
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if 'shape' in mapnik.DatasourceCache.instance().plugin_names():
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lyr.datasource = mapnik.Shapefile(file='../data/shp/poly.shp')
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fields = lyr.datasource.fields()
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eq_(fields, ['AREA', 'EAS_ID', 'PRFEDEA'])
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def test_total_feature_count_shp():
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lyr = mapnik.Layer('test')
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if 'shape' in mapnik.DatasourceCache.instance().plugin_names():
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lyr.datasource = mapnik.Shapefile(file='../data/shp/poly.shp')
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features = lyr.datasource.all_features()
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num_feats = len(features)
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eq_(num_feats, 10)
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def test_total_feature_count_json():
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lyr = mapnik.Layer('test')
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if 'ogr' in mapnik.DatasourceCache.instance().plugin_names():
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lyr.datasource = mapnik.Ogr(file='../data/json/points.json',layer_by_index=0)
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features = lyr.datasource.all_features()
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num_feats = len(features)
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eq_(num_feats, 5)
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def test_reading_json_from_string():
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json = open('../data/json/points.json','r').read()
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lyr = mapnik.Layer('test')
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if 'ogr' in mapnik.DatasourceCache.instance().plugin_names():
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lyr.datasource = mapnik.Ogr(file=json,layer_by_index=0)
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features = lyr.datasource.all_features()
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num_feats = len(features)
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eq_(num_feats, 5)
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def test_feature_envelope():
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lyr = mapnik.Layer('test')
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if 'shape' in mapnik.DatasourceCache.instance().plugin_names():
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lyr.datasource = mapnik.Shapefile(file='../data/shp/poly.shp')
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features = lyr.datasource.all_features()
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for feat in features:
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env = feat.envelope()
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contains = lyr.envelope().contains(env)
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eq_(contains, True)
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intersects = lyr.envelope().contains(env)
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eq_(intersects, True)
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def test_feature_attributes():
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lyr = mapnik.Layer('test')
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if 'shape' in mapnik.DatasourceCache.instance().plugin_names():
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lyr.datasource = mapnik.Shapefile(file='../data/shp/poly.shp')
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features = lyr.datasource.all_features()
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feat = features[0]
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attrs = {'PRFEDEA': u'35043411', 'EAS_ID': 168, 'AREA': 215229.266}
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eq_(feat.attributes, attrs)
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eq_(lyr.datasource.fields(),['AREA', 'EAS_ID', 'PRFEDEA'])
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eq_(lyr.datasource.field_types(),['float','int','str'])
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def test_ogr_layer_by_sql():
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lyr = mapnik.Layer('test')
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if 'ogr' in mapnik.DatasourceCache.instance().plugin_names():
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lyr.datasource = mapnik.Ogr(file='../data/shp/poly.shp', layer_by_sql='SELECT * FROM poly WHERE EAS_ID = 168')
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features = lyr.datasource.all_features()
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num_feats = len(features)
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eq_(num_feats, 1)
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def test_hit_grid():
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import os
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from itertools import groupby
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def rle_encode(l):
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""" encode a list of strings with run-length compression """
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return ["%d:%s" % (len(list(group)), name) for name, group in groupby(l)]
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m = mapnik.Map(256,256);
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try:
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mapnik.load_map(m,'../data/good_maps/agg_poly_gamma_map.xml');
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m.zoom_all()
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join_field = 'NAME'
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fg = [] # feature grid
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for y in range(0, 256, 4):
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for x in range(0, 256, 4):
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featureset = m.query_map_point(0,x,y)
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added = False
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for feature in featureset.features:
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fg.append(feature[join_field])
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added = True
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if not added:
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fg.append('')
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hit_list = '|'.join(rle_encode(fg))
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eq_(hit_list[:16],'730:|2:Greenland')
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eq_(hit_list[-12:],'1:Chile|812:')
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except RuntimeError, e:
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# only test datasources that we have installed
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if not 'Could not create datasource' in str(e):
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raise RuntimeError(str(e))
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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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