Support for running the test suite with py.test

 * Get rid of runtests.py
 * Moved test code  from rest_framework/tests and rest_framework/runtests to tests
 * Invoke py.test from setup.py
 * Invoke py.test from Travis
 * Invoke py.test from tox
 * Changed setUpClass to be just plain setUp in test_permissions.py
 * Updated contribution guideline to show how to invoke py.test

1 files changed, 30 insertions, 0 deletions

diff --git a/tests/test_nullable_fields.py b/tests/test_nullable_fields.py
new file mode 100644
index 00000000..33a9685f
--- /dev/null
+++ b/tests/test_nullable_fields.py
@@ -0,0 +1,30 @@
+from django.core.urlresolvers import reverse
+
+from rest_framework.compat import patterns, url
+from rest_framework.test import APITestCase
+from tests.models import NullableForeignKeySource
+from tests.serializers import NullableFKSourceSerializer
+from tests.views import NullableFKSourceDetail
+
+
+urlpatterns = patterns(
+    '',
+    url(r'^objects/(?P<pk>\d+)/$', NullableFKSourceDetail.as_view(), name='object-detail'),
+)
+
+
+class NullableForeignKeyTests(APITestCase):
+    """
+    DRF should be able to handle nullable foreign keys when a test
+    Client POST/PUT request is made with its own serialized object.
+    """
+    urls = 'tests.test_nullable_fields'
+
+    def test_updating_object_with_null_fk(self):
+        obj = NullableForeignKeySource(name='example', target=None)
+        obj.save()
+        serialized_data = NullableFKSourceSerializer(obj).data
+
+        response = self.client.put(reverse('object-detail', args=[obj.pk]), serialized_data)
+
+        self.assertEqual(response.data, serialized_data)