Add proper validation for updating relational fields with incorrect types. Fixes #446.

1 files changed, 12 insertions, 1 deletions

diff --git a/rest_framework/tests/relations.py b/rest_framework/tests/relations.py
index 108ec473..91daea8a 100644
--- a/rest_framework/tests/relations.py
+++ b/rest_framework/tests/relations.py
@@ -19,4 +19,15 @@ class FieldTests(TestCase):
         https://github.com/tomchristie/django-rest-framework/issues/446
         """
         field = serializers.PrimaryKeyRelatedField(queryset=NullModel.objects.all())
-        self.assertRaises(serializers.ValidationError, field.from_native, ('',))
+        self.assertRaises(serializers.ValidationError, field.from_native, '')
+        self.assertRaises(serializers.ValidationError, field.from_native, [])
+
+    def test_hyperlinked_related_field_with_empty_string(self):
+        field = serializers.HyperlinkedRelatedField(queryset=NullModel.objects.all(), view_name='')
+        self.assertRaises(serializers.ValidationError, field.from_native, '')
+        self.assertRaises(serializers.ValidationError, field.from_native, [])
+
+    def test_slug_related_field_with_empty_string(self):
+        field = serializers.SlugRelatedField(queryset=NullModel.objects.all(), slug_field='pk')
+        self.assertRaises(serializers.ValidationError, field.from_native, '')
+        self.assertRaises(serializers.ValidationError, field.from_native, [])