Do not cast z and m to None when writting to ewkb

Author: yohanboniface

postgis/point.py

@@ -55,9 +55,9 @@ def from_ewkb_body(cls, reader, srid=None):
     def write_ewkb_body(self, writer):
         writer.write_double(self.x)
         writer.write_double(self.y)
-        if self.z:
+        if self.z is not None:
             writer.write_double(self.z)
-        if self.m:
+        if self.m is not None:
             writer.write_double(self.m)
 
     @property

setup.py

@@ -46,7 +46,7 @@ def list_modules(dirname):
     cmdclass = {'build_ext': build_ext}
 
 
-VERSION = (1, 0, 1)
+VERSION = (1, 0, 2)
 
 setup(
     name='postgis',

tests/psycopg/test_point.py

@@ -15,11 +15,16 @@ def test_point_should_round(cursor, expected):
     assert geom.coords == expected
 
 
-def test_point_with_geography_column(cursor):
+@pytest.mark.parametrize('expected', [
+    (1, -2, 3),
+    (-1.123456789, 2.987654321, 231),
+    (1, -2, 0),
+])
+def test_point_geography_column_should_round(cursor, expected):
     cursor.execute('CREATE TABLE geography_point ("geom" geography(PointZ))')
-    params = [Point(1, 2, 3, srid=4326)]
+    params = [Point(*expected, srid=4326)]
     cursor.execute('INSERT INTO geography_point (geom) VALUES (%s)', params)
     cursor.execute('SELECT geom FROM geography_point WHERE geom=%s', params)
     geom = cursor.fetchone()[0]
-    assert geom.coords == (1, 2, 3)
+    assert geom.coords == expected
     cursor.execute('DROP TABLE geography_point')