Do not cast 0 as None for z and m coordinates

Author: yohanboniface

postgis/point.py

@@ -15,8 +15,8 @@ def __init__(self, x, y=None, z=None, m=None, srid=None):
                     m = extra[0]
         self.x = float(x)
         self.y = float(y)
-        self.z = int(z) if z else None
-        self.m = int(m) if m else None
+        self.z = int(z) if z is not None else None
+        self.m = int(m) if m is not None else None
         if srid is not None:
             self.srid = srid
 

setup.py

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

tests/test_point.py

@@ -83,3 +83,18 @@ def test_string_are_cast():
     assert point.x == 1.0
     assert point.y == 2.0
     assert point.z == 3
+
+
+def test_0_as_z_is_considered():
+    point = Point(1, 2, 0)
+    assert point.x == 1.0
+    assert point.y == 2.0
+    assert point.z == 0
+
+
+def test_0_as_m_is_considered():
+    point = Point(1, 2, 3, 0)
+    assert point.x == 1.0
+    assert point.y == 2.0
+    assert point.z == 3
+    assert point.m == 0