Add a basic test for the creatersakey management command

oidc_provider/tests/test_creatersakey_command.py

@@ -0,0 +1,11 @@
+from django.core.management import call_command
+from django.test import TestCase, override_settings
+from django.utils.six import StringIO
+
+
+class CreateRSAKeyTest(TestCase):
+    @override_settings(BASE_DIR='/tmp')
+    def test_command_output(self):
+        out = StringIO()
+        call_command('creatersakey', stdout=out)
+        self.assertIn('RSA key successfully created', out.getvalue())