--- /dev/null
+## Copyright (C) 2018-20xx CEA/DEN, EDF R&D
+##
+## This library is free software; you can redistribute it and/or
+## modify it under the terms of the GNU Lesser General Public
+## License as published by the Free Software Foundation; either
+## version 2.1 of the License, or (at your option) any later version.
+##
+## This library is distributed in the hope that it will be useful,
+## but WITHOUT ANY WARRANTY; without even the implied warranty of
+## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+## Lesser General Public License for more details.
+##
+## You should have received a copy of the GNU Lesser General Public
+## License along with this library; if not, write to the Free Software
+## Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA 02111-1307 USA
+##
+## See http:##www.salome-platform.org/ or
+## email : webmaster.salome@opencascade.com<mailto:webmaster.salome@opencascade.com>
+##
+
+from salome.shaper import model
+
+model.begin()
+partSet = model.moduleDocument()
+# check error on empty name
+Param1 = model.addParameter(partSet, "", "100")
+assert(Param1.feature().error() != "")
+# check error on empty value
+Param2 = model.addParameter(partSet, "L", "")
+assert(Param2.feature().error() != "")
+# check error if name is not variable
+Param3 = model.addParameter(partSet, "100", "100")
+assert(Param3.feature().error() != "")
+# check error on wrong value expression
+Param4 = model.addParameter(partSet, "N", "+-.so&@")
+assert(Param4.feature().error() != "")
+model.end()
