[1.0.X] Fixed #3501 -- Fixed date filtering in querysets for nullable date fields. Only affects SQLite.

Backport of r9466 from trunk.


git-svn-id: http://code.djangoproject.com/svn/django/branches/releases/1.0.X@9468 bcc190cf-cafb-0310-a4f2-bffc1f526a37

1 files changed, 11 insertions, 1 deletions

diff --git a/tests/regressiontests/model_regress/models.py b/tests/regressiontests/model_regress/models.py
index 2f2c2facd5..19d38b216c 100644
--- a/tests/regressiontests/model_regress/models.py
+++ b/tests/regressiontests/model_regress/models.py
@@ -27,7 +27,7 @@ class Movie(models.Model):
     name = models.CharField(max_length=60)
 
 class Party(models.Model):
-    when = models.DateField()
+    when = models.DateField(null=True)
 
 class Event(models.Model):
     when = models.DateTimeField()
@@ -93,6 +93,16 @@ u''
 >>> [p.when for p in Party.objects.filter(when__year='1998')]
 [datetime.date(1998, 12, 31)]
 
+# Date filtering was failing with NULL date values in SQLite (regression test
+# for #3501, amongst other things).
+>>> _ = Party.objects.create()
+>>> p = Party.objects.filter(when__month=1)[0]
+>>> p.when
+datetime.date(1999, 1, 1)
+>>> l = Party.objects.filter(pk=p.pk).dates("when", "month")
+>>> l[0].month == 1
+True
+
 # Check that get_next_by_FIELD and get_previous_by_FIELD don't crash when we
 # have usecs values stored on the database
 #