def test_contraint_max_with_exclusive(self):
        const = search._parse_dict_value(
            {'MAX': {'VALUE': 5,
                     'EXCLUSIVE': True}})
        self.assertEqual(const, {'__lt': 5})

        const = search._parse_dict_value(
            {'MAX': {'VALUE': 5,
                     'EXCLUSIVE': False}})
        self.assertEqual(const, {'__lte': 5})

 def test_within_radius(self):
     const = search._parse_dict_value(
         {'WITHIN_RADIUS': {
             "RADIUS": 5,
             "POINT": {
                 "x": 100,
                 "y": 50}}})
     self.assertEqual(const,
                      {'__dwithin': (Point(100, 50), Distance(m=5))})

    def test_boundary_constraint(self):
        b = Boundary.objects.create(
            geom=MultiPolygon(make_simple_polygon(0)),
            name='whatever',
            category='whatever',
            sort_order=1)

        inparams = search._parse_dict_value({'IN_BOUNDARY': b.pk})
        self.assertEqual(inparams,
                         {'__within': b.geom})

 def test_constraints_min_and_max(self):
     const = search._parse_dict_value(
         {'MIN': 5,
          'MAX': {'VALUE': 9,
                  'EXCLUSIVE': False}})
     self.assertEqual(const, {'__lte': 9, '__gte': 5})

 def test_contraint_max(self):
     const = search._parse_dict_value({'MAX': 5})
     self.assertEqual(const, {'__lte': 5})

 def test_contraint_min(self):
     const = search._parse_dict_value({'MIN': 5})
     self.assertEqual(const, {'__gte': 5})

 def test_constraints_is(self):
     # "IS" is a special case in that we don't need to appl
     # a suffix at all
     isparams = search._parse_dict_value({'IS': 'what'})
     self.assertEqual(isparams,
                      {'': 'what'})

 def test_constraints_isnull(self):
     inparams = search._parse_dict_value({'ISNULL': True})
     self.assertEqual(inparams, {'__isnull': True})

 def test_constraints_in(self):
     inparams = search._parse_dict_value({'IN': [1, 2, 3]})
     self.assertEqual(inparams,
                      {'__in': [1, 2, 3]})