diff --git a/keycloak/tests/test_uma_permissions.py b/keycloak/tests/test_uma_permissions.py
new file mode 100644
index 0000000..ad57698
--- /dev/null
+++ b/keycloak/tests/test_uma_permissions.py
@@ -0,0 +1,71 @@
+# -*- coding: utf-8 -*-
+#
+# Copyright (C) 2017 Marcos Pereira <marcospereira.mpj@gmail.com>
+#
+# This program 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 3 of the License, or
+# (at your option) any later version.
+#
+# This program 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 program.  If not, see <http://www.gnu.org/licenses/>.
+from ..uma_permissions import *
+from ..exceptions import *
+try:
+    import unittest
+except ImportError:
+    import unittest2 as unittest
+
+from collections import namedtuple
+
+
+class Success(Exception):
+    """Used as stand-in for an actual exception for tests that are meant to succeed.
+    This exception should never be raised."""
+
+
+class TestOpenID(unittest.TestCase):
+    def test_call_permission(self):
+        test = namedtuple("test",
+                          ["name", "permission", "args", "kwargs", "result", "error"])
+        tests = [
+            test("Resource(Scope)", Resource("Resource1"),
+                 [Scope("Scope1")], {},
+                 "Resource1#Scope1", Success),
+            test("Scope(Resource)", Scope("Scope1"),
+                 [Resource("Resource1")], {},
+                 "Resource1#Scope1", Success),
+
+            test("Resource(scope=str)", Resource("Resource1"),
+                 [], {"scope": "Scope1"},
+                 "Resource1#Scope1", Success),
+            test("Scope(resource=str)", Scope("Scope1"),
+                 [], {"resource": "Resource1"},
+                 "Resource1#Scope1", Success),
+
+            test("Resource(str)", Resource("Resource1"),
+                 ["Scope1"], {},
+                 "", PermissionDefinitionError),
+        ]
+
+        for case in tests:
+            with self.subTest(case.name):
+                msg = f'in case "{case.name}"'
+                try:
+                    if not case.error is Success:
+                        with self.assertRaises(case.error, msg=msg):
+                            case.permission(*case.args, **case.kwargs)
+                    else:
+                        self.assertEqual(
+                            case.permission(*case.args, **case.kwargs),
+                            case.result, msg=msg)
+                except AssertionError:
+                    raise
+                except Exception as e:
+                    self.fail(
+                        f'unexpected exception "{e}": {msg}')