'Test if parameter references work.'

def test_param_refs(self):

    env = environment.Environment(self.params)
    tmpl = template.Template(self.props_template, env=env)
    stack = parser.Stack(utils.dummy_context(), 'test', tmpl, stack_id='1ba8c334-2297-4312-8c7c-43763a988ced', tenant_id='9913ef0a-b8be-4b33-b574-9061441bd373')
    self.assertEqual(self.expected, function.resolve(tmpl.parse(stack.defn, self.snippet)))
