diff --git a/lib/xos-genx/tests/pure_proto_test.py b/lib/xos-genx/tests/pure_proto_test.py
new file mode 100644
index 0000000..b7330d0
--- /dev/null
+++ b/lib/xos-genx/tests/pure_proto_test.py
@@ -0,0 +1,90 @@
+
+import unittest
+from xosgenx.generator import XOSGenerator
+from helpers import FakeArgs, XProtoTestHelpers
+
+# Generate from xproto, then generate from equivalent proto
+class XPureProtobufGenerator(unittest.TestCase):
+	#FIXME this test is failinf
+    def _test_pure_proto(self):
+		xproto = \
+"""
+message VRouterPort (XOSBase){
+     optional string name = 1 [help_text = "port friendly name", max_length = 20, null = True, db_index = False, blank = True];
+     required string openflow_id = 2 [help_text = "port identifier in ONOS", max_length = 21, null = False, db_index = False, blank = False];
+     required manytoone vrouter_device->VRouterDevice:ports = 3 [db_index = True, null = False, blank = False];
+     required manytoone vrouter_service->VRouterService:device_ports = 4 [db_index = True, null = False, blank = False];
+}
+"""
+
+		proto = \
+"""
+message VRouterPort {
+  option bases = "XOSBase";
+  optional string name = 1 [ null = "True",  max_length = "20",  blank = "True",  help_text = "port friendly name",  modifier = "optional",  db_index = "False" ];
+  required string openflow_id = 2 [ null = "False",  max_length = "21",  blank = "False",  help_text = "port identifier in ONOS",  modifier = "required",  db_index = "False" ];
+  required int32 vrouter_device = 3 [ null = "False",  blank = "False",  model = "VRouterDevice",  modifier = "required",  type = "link",  port = "ports",  db_index = "True", link = "manytoone"];
+  required int32 vrouter_service = 4 [ null = "False",  blank = "False",  model = "VRouterService",  modifier = "required",  type = "link",  port = "device_ports",  db_index = "True", link = "manytoone"];
+}
+"""
+		target = XProtoTestHelpers.write_tmp_target(
+"""
+from header import *
+{% for m in proto.messages %}
+{% if file_exists(xproto_base_name(m.name)|lower+'_header.py') -%}from {{xproto_base_name(m.name)|lower }}_header import *{% endif %}
+{% if file_exists(xproto_base_name(m.name)|lower+'_top.py') -%}{{ include_file(xproto_base_name(m.name)|lower+'_top.py') }} {% endif %}
+
+{%- for l in m.links %}
+
+{% if l.peer.name != m.name %}
+from core.models.{{ l.peer.name | lower }} import {{ l.peer.name }}
+{% endif %}
+
+{%- endfor %}
+{% for b in m.bases %}
+{% if b!='XOSBase' and 'Mixin' not in b%}
+from core.models.{{b.name | lower}} import {{ b.name }}
+{% endif %}
+{% endfor %}
+
+
+class {{ m.name }}{{ xproto_base_def(m, m.bases) }}:
+  # Primitive Fields (Not Relations)
+  {% for f in m.fields %}
+  {%- if not f.link -%}
+  {{ f.name }} = {{ xproto_django_type(f.type, f.options) }}( {{ xproto_django_options_str(f) }} )
+  {% endif %}
+  {%- endfor %}
+
+  # Relations
+  {% for l in m.links %}
+  {{ l.src_port }} = {{ xproto_django_link_type(l) }}( {%- if l.peer.name==m.name -%}'self'{%- else -%}{{ l.peer.name }} {%- endif -%}, {{ xproto_django_link_options_str(l, l.dst_port ) }} )
+  {%- endfor %}
+
+  {% if file_exists(m.name|lower + '_model.py') -%}{{ include_file(m.name|lower + '_model.py') | indent(width=2)}}{%- endif %}
+  pass
+
+{% if file_exists(xproto_base_name(m.name)|lower+'_bottom.py') -%}{{ include_file(xproto_base_name(m.name)|lower+'_bottom.py') }}{% endif %}
+{% endfor %}
+""")
+
+		args_xproto = FakeArgs()
+		args_xproto.inputs = xproto
+		args_xproto.target = target
+		xproto_gen = XOSGenerator.generate(args_xproto)
+
+		count1 = len(xproto_gen.split('\n'))
+
+		args_proto = FakeArgs()
+		args_proto.inputs = proto
+		args_proto.target = target
+		args_proto.rev = True
+		proto_gen = XOSGenerator.generate(args_proto)
+		count2 = len(proto_gen.split('\n'))
+
+		self.assertEqual(count1, count2)
+
+if __name__ == '__main__':
+    unittest.main()
+
+