created a mock exporter, and altered the config to use it.

tests/mock_exporter.py

@@ -0,0 +1,10 @@
+from artifice import sales_order
+
+
+class MockExporter(sales_order.SalesOrder):
+
+    def _bill(self, tenant):
+        pass
+
+    def close(self):
+        pass

tests/test_interface.py

@@ -42,7 +42,7 @@ config = {
         "host": "http://localhost:8777/"
     },
     "main": {
-        "export_provider": "artifice.plugins.csv_:Csv",
+        "export_provider": "tests.mock_exporter:MockExporter",
         "database_uri": PG_DATABASE_URI
     },
     "openstack": {