[soc2010/query-refactor] Implemented not equal (exclude(foo=bar)) in the ORM for MongoDB, note that this doesn't actually work at the moment due to a bug in MongoDB.

git-svn-id: http://code.djangoproject.com/svn/django/branches/soc2010/query-refactor@13358 bcc190cf-cafb-0310-a4f2-bffc1f526a37

2 files changed, 25 insertions, 0 deletions

diff --git a/tests/regressiontests/mongodb/models.py b/tests/regressiontests/mongodb/models.py
index b942d12e59..183663aaf5 100644
--- a/tests/regressiontests/mongodb/models.py
+++ b/tests/regressiontests/mongodb/models.py
@@ -15,3 +15,5 @@ class Artist(models.Model):
 class Group(models.Model):
     id = models.NativeAutoField(primary_key=True)
     name = models.CharField(max_length=255)
+    year_formed = models.IntegerField(null=True)
+
diff --git a/tests/regressiontests/mongodb/tests.py b/tests/regressiontests/mongodb/tests.py
index bd9cd5981f..93adcecd58 100644
--- a/tests/regressiontests/mongodb/tests.py
+++ b/tests/regressiontests/mongodb/tests.py
@@ -57,3 +57,26 @@ class MongoTestCase(TestCase):
         self.assertEqual(b.current_group_id, e.pk)
         self.assertFalse(hasattr(b, "_current_group_cache"))
         self.assertEqual(b.current_group, e)
+    
+    def test_lookup(self):
+        q = Group.objects.create(name="Queen", year_formed=1971)
+        e = Group.objects.create(name="The E Street Band", year_formed=1972)
+        
+        qs = Group.objects.exclude(year_formed=1972)
+        v = qs.query.get_compiler(qs.db).get_filters(qs.query.where, correct=True)
+        self.assertEqual(v, {
+            "$or": [
+                {"year_formed": {"$ne": 1972}},
+                {"year_formed": None},
+            ]
+        })
+        # A bug in MongoDB prevents this query from actually working, but test
+        # that we're at least generating the right query.
+        return
+        
+        self.assertQuerysetEqual(
+            qs, [
+                "Queen",
+            ],
+            lambda g: g.name,
+        )