diff --git a/c_gen/templates/locitest/test_ext.c b/c_gen/templates/locitest/test_ext.c
new file mode 100644
index 0000000..1efcaf6
--- /dev/null
+++ b/c_gen/templates/locitest/test_ext.c
@@ -0,0 +1,69 @@
+:: # Copyright 2013, Big Switch Networks, Inc.
+:: #
+:: # LoxiGen is licensed under the Eclipse Public License, version 1.0 (EPL), with
+:: # the following special exception:
+:: #
+:: # LOXI Exception
+:: #
+:: # As a special exception to the terms of the EPL, you may distribute libraries
+:: # generated by LoxiGen (LoxiGen Libraries) under the terms of your choice, provided
+:: # that copyright and licensing notices generated by LoxiGen are not altered or removed
+:: # from the LoxiGen Libraries and the notice provided below is (i) included in
+:: # the LoxiGen Libraries, if distributed in source code form and (ii) included in any
+:: # documentation for the LoxiGen Libraries, if distributed in binary form.
+:: #
+:: # Notice: "Copyright 2013, Big Switch Networks, Inc. This library was generated by the LoxiGen Compiler."
+:: #
+:: # You may not use this file except in compliance with the EPL or LOXI Exception. You may obtain
+:: # a copy of the EPL at:
+:: #
+:: # http://www.eclipse.org/legal/epl-v10.html
+:: #
+:: # Unless required by applicable law or agreed to in writing, software
+:: # distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+:: # WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+:: # EPL for the specific language governing permissions and limitations
+:: # under the EPL.
+::
+/* Copyright 2012, Big Switch Networks, Inc. */
+
+/**
+ * Test extensions
+ */
+
+#include <locitest/test_common.h>
+
+/**
+ * Simple tests for extension objects
+ */
+
+int
+test_ext_objs(void)
+{
+    of_action_bsn_mirror_t *obj;
+
+    obj = of_action_bsn_mirror_new(OF_VERSION_1_0);
+    TEST_ASSERT(obj != NULL);
+    TEST_ASSERT(obj->object_id == OF_ACTION_BSN_MIRROR);
+
+    TEST_ASSERT(of_action_to_object_id(OF_EXPERIMENTER_TYPE, OF_VERSION_1_0) ==
+                OF_ACTION_EXPERIMENTER);
+
+    TEST_ASSERT(of_action_id_to_object_id(OF_EXPERIMENTER_TYPE, OF_VERSION_1_0) ==
+                OF_ACTION_ID_EXPERIMENTER);
+
+    TEST_ASSERT(of_instruction_to_object_id(OF_EXPERIMENTER_TYPE, OF_VERSION_1_0) ==
+                OF_INSTRUCTION_EXPERIMENTER);
+
+    TEST_ASSERT(of_queue_prop_to_object_id(OF_EXPERIMENTER_TYPE, OF_VERSION_1_0) ==
+                OF_QUEUE_PROP_EXPERIMENTER);
+
+    TEST_ASSERT(of_meter_band_to_object_id(OF_EXPERIMENTER_TYPE, OF_VERSION_1_0) ==
+                OF_METER_BAND_EXPERIMENTER);
+
+    TEST_ASSERT(of_table_feature_prop_to_object_id(OF_EXPERIMENTER_TYPE,
+                                                   OF_VERSION_1_3) ==
+                OF_TABLE_FEATURE_PROP_EXPERIMENTER);
+
+    return TEST_PASS;
+}