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, 19 insertions, 0 deletions

diff --git a/tests/test_serializer_import.py b/tests/test_serializer_import.py
new file mode 100644
index 00000000..3b8ff4b3
--- /dev/null
+++ b/tests/test_serializer_import.py
@@ -0,0 +1,19 @@
+from django.test import TestCase
+
+from rest_framework import serializers
+from tests.accounts.serializers import AccountSerializer
+
+
+class ImportingModelSerializerTests(TestCase):
+    """
+    In some situations like, GH #1225, it is possible, especially in
+    testing, to import a serializer who's related models have not yet
+    been resolved by Django. `AccountSerializer` is an example of such
+    a serializer (imported at the top of this file).
+    """
+    def test_import_model_serializer(self):
+        """
+        The serializer at the top of this file should have been
+        imported successfully, and we should be able to instantiate it.
+        """
+        self.assertIsInstance(AccountSerializer(), serializers.ModelSerializer)