diff --git a/src/unittests/unit/server/mixins/networkstate_test.py b/src/unittests/unit/server/mixins/networkstate_test.py
new file mode 100755
index 0000000000..7d560743e7
--- /dev/null
+++ b/src/unittests/unit/server/mixins/networkstate_test.py
@@ -0,0 +1,27 @@
+#!/usr/bin/env python
+# This file is part of Xpra.
+# Copyright (C) 2018-2019 Antoine Martin <antoine@xpra.org>
+# Xpra is released under the terms of the GNU GPL v2, or, at your option, any
+# later version. See the file COPYING for details.
+
+import unittest
+
+from xpra.util import AdHocStruct
+from unit.server.mixins.servermixintest_util import ServerMixinTest
+
+
+class MMAPMixinTest(ServerMixinTest):
+
+    def test_mmap(self):
+        from xpra.server.mixins.networkstate_server import NetworkStateServer
+        opts = AdHocStruct()
+        opts.pings = 1
+        opts.bandwidth_limit = "10Mbps"
+        self._test_mixin_class(NetworkStateServer, opts)
+
+def main():
+    unittest.main()
+
+
+if __name__ == '__main__':
+    main()