more wkb/wkt tests

tests/python_tests/geometry_io_test.py

@@ -1,10 +1,16 @@
 #encoding: utf8
 
 from nose.tools import *
-import os
+import os,sys
 from utilities import execution_path
+from utilities import Todo
 import mapnik
 
+def setup():
+    # All of the paths used are relative, if we run the tests
+    # from another directory we need to chdir()
+    os.chdir(execution_path('.'))
+
 wkts = [
     [1,"POINT(30 10)"],
     [1,"POINT(30.0 10.0)"],
@@ -20,7 +26,7 @@ wkts = [
 ]
 
 
-def compare_wkb_from_wkt(wkt,num):
+def compare_wkb_from_wkt(wkt,num=None):
 
     # create a Path from geometry(s)
     paths = mapnik.Path.from_wkt(wkt)
@@ -31,6 +37,7 @@ def compare_wkb_from_wkt(wkt,num):
 
     # ensure both have same result
     # compare number of geometry parts
+    if num:
         eq_(len(paths),num)
         eq_(len(f.geometries()),num)
     # compare collection off all geometries
@@ -45,12 +52,13 @@ def compare_wkb_from_wkt(wkt,num):
         paths2.add_wkb(path.to_wkb(mapnik.wkbByteOrder.XDR))
 
     # ensure result
+    if num:
         eq_(len(paths2),num)
     eq_(paths2.to_wkb(mapnik.wkbByteOrder.XDR),paths.to_wkb(mapnik.wkbByteOrder.XDR))
     for idx,path in enumerate(paths2):
         eq_(f.geometries()[idx].to_wkb(mapnik.wkbByteOrder.XDR),path.to_wkb(mapnik.wkbByteOrder.XDR))
 
-def compare_wkt_from_wkt(wkt,num):
+def compare_wkt_from_wkt(wkt,num=None):
     # create a Path from geometry(s)
     paths = mapnik.Path.from_wkt(wkt)
 
@@ -59,12 +67,13 @@ def compare_wkt_from_wkt(wkt,num):
     f.add_geometries_from_wkt(wkt)
 
     # compare to original, which may not have significant digits
-    if '.0' not in wkt:
+    if '.' not in wkt:
         eq_(f.geometries().to_wkt().upper().replace('.0',''),wkt)
     else:
         eq_(f.geometries().to_wkt().upper(),wkt)
 
     # ensure both have same result
+    if num:
         eq_(len(paths),num)
         eq_(len(f.geometries()),num)
     eq_(paths.to_wkt(),f.geometries().to_wkt())
@@ -77,6 +86,7 @@ def compare_wkt_from_wkt(wkt,num):
         paths2.add_wkt(path.to_wkt())
 
     # ensure result
+    if num:
         eq_(len(paths2),num)
     eq_(paths2.to_wkt(),paths.to_wkt())
     for idx,path in enumerate(paths2):
@@ -96,5 +106,52 @@ def test_wkb_simple():
         except RuntimeError, e:
             raise RuntimeError('%s %s' % (e, wkt))
 
+@raises(IndexError)
+def test_geometry_index_error():
+    wkt = 'Point (0 0)'
+    paths = mapnik.Path.from_wkt(wkt)
+    paths[3]
+    f = mapnik.Feature(1)
+    f.add_geometries_from_wkt(wkt)
+    f.geometries()[3]
+
+@raises(IndexError)
+def test_geometry_index_error2():
+    wkt = 'Point (0 0)'
+    f = mapnik.Feature(1)
+    f.add_geometries_from_wkt(wkt)
+    f.geometries()[3]
+
+def test_wkt_rounding():
+    raise Todo("fixme or remove test")
+    # currently fails because we use output precision of 6 - should we make configurable? https://github.com/mapnik/mapnik/issues/1009
+    # if precision is set to 15 still fails due to very subtle rounding issues
+    wkt = "POLYGON((7.904185417583761 54.180426336712856,7.89918053477129 54.178168035931542,7.897715691021261 54.182318426556606,7.893565300396205 54.183111883587891,7.89039147227129 54.187567449994106,7.885874870708761 54.190680242962827,7.879893425396261 54.193915106244049,7.894541862896233 54.194647528119134,7.900645378521233 54.190680242962827,7.904185417583761 54.180426336712856))"
+    compare_wkt_from_wkt(wkt,1)
+
+def test_wkt_collection_flattening():
+    raise Todo("fixme or remove test")
+    # currently fails as the MULTIPOLYGON inside will be returned as multiple polygons - not a huge deal - should we worry?
+    wkt = "GEOMETRYCOLLECTION(POLYGON((1 1,2 1,2 2,1 2,1 1)),MULTIPOLYGON(((40 40,20 45,45 30,40 40)),((20 35,45 20,30 5,10 10,10 30,20 35),(30 20,20 25,20 15,30 20))),LINESTRING(2 3,3 4))"
+    compare_wkt_from_wkt(wkt,4)
+
+# skip since this data is not checked into tests
+#def test_wkt_natural_earth():
+#    '''
+#    wget http://www.naturalearthdata.com/http//www.naturalearthdata.com/download/10m/physical/10m-land.zip
+#    unzip 10m-land.zip
+#    ogr2ogr -F CSV -lco GEOMETRY=AS_WKT 10m-land.csv 10m_land.shp
+#    mv 10m-land.csv tests/data/csv/
+#    '''
+#    lines = open('../data/csv/10m-land.csv').readlines()
+#    for line in lines:
+#        wkt = lines[1][lines[1].index('"',0)+1:lines[1].index('"',1)]
+#        wkt = wkt.replace(' (','(',1)
+#        try:
+#            compare_wkb_from_wkt(wkt)
+#        except RuntimeError, e:
+#            raise RuntimeError('%s %s' % (e, wkt))
+
 if __name__ == "__main__":
+    setup()
     [eval(run)() for run in dir() if 'test_' in run]