Fixed pk uniqueness validation for new objects created outside of a ModelForm. Also removed need for ModelForm to poke at Model._state.adding, keeping it an internal ORM concern.

git-svn-id: http://code.djangoproject.com/svn/django/trunk@14613 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/regressiontests/model_regress/tests.py

@@ -1,16 +1,26 @@
-from models import Worker
+from django.core.exceptions import ValidationError
 from django.test import TestCase
 
+from models import Worker, NonAutoPK
+
+
 class RelatedModelOrderedLookupTest(TestCase):
     """
     Regression test for #10153: foreign key __gte and __lte lookups.
     """
-    
+
     # The bug is that the following queries would raise:
     # "TypeError: Related Field has invalid lookup: gte"
-    
+
     def test_related_gte_lookup(self):
         Worker.objects.filter(department__gte=0)
 
     def test_related_lte_lookup(self):
         Worker.objects.filter(department__lte=0)
+
+
+class ModelValidationTest(TestCase):
+    def test_pk_validation(self):
+        one = NonAutoPK.objects.create(name="one")
+        again = NonAutoPK(name="one")
+        self.assertRaises(ValidationError, again.validate_unique)