[soc2009/model-validation] Added simple tests for ForeignKey validation.

git-svn-id: http://code.djangoproject.com/svn/django/branches/soc2009/model-validation@10879 bcc190cf-cafb-0310-a4f2-bffc1f526a37

tests/modeltests/validation/models.py

@@ -8,6 +8,7 @@ class ModelToValidate(models.Model):
     name = models.CharField(max_length=100)
     created = models.DateTimeField(default=datetime.now)
     number = models.IntegerField()
+    parent = models.ForeignKey('self', blank=True, null=True)
 
     def validate(self):
         super(ModelToValidate, self).validate()

tests/modeltests/validation/tests.py

@@ -1,4 +1,4 @@
-from django.core.exceptions import ValidationError
+from django.core.exceptions import ValidationError, NON_FIELD_ERRORS
 from django.test import TestCase
 
 from models import ModelToValidate
@@ -19,4 +19,21 @@ class BaseModelValidationTests(TestCase):
     def test_custom_validate_method_is_called(self):
         mtv = ModelToValidate(number=11)
         self.assertRaises(ValidationError, mtv.clean)
+        try:
+            mtv.clean()
+        except ValidationError, e:
+            self.assertEquals(sorted([NON_FIELD_ERRORS, 'name']), sorted(e.message_dict.keys()))
+
+    def test_wrong_FK_value_raises_error(self):
+        mtv=ModelToValidate(number=10, name='Some Name', parent_id=3)
+        self.assertRaises(ValidationError, mtv.clean)
+        try:
+            mtv.clean()
+        except ValidationError, e:
+            self.assertEquals(['parent'], e.message_dict.keys())
+
+    def test_correct_FK_value_cleans(self):
+        parent = ModelToValidate.objects.create(number=10, name='Some Name')
+        mtv=ModelToValidate(number=10, name='Some Name', parent_id=parent.pk)
+        self.assertEqual(None, mtv.clean())