Add unit tests

Added unit tests with tox configuration

Change-Id: I99a5107689c0df198cdc22e6272176b8c4747896
Signed-off-by: Krzysztof Frukacz <krzysztof.frukacz@gigaspaces.com>
Issue-id: VNFSDK-60
diff --git a/tests/__init__.py b/tests/__init__.py
new file mode 100644
index 0000000..d78727c
--- /dev/null
+++ b/tests/__init__.py
@@ -0,0 +1,19 @@
+#
+# Copyright (c) 2017 GigaSpaces Technologies Ltd. All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+
+import os
+
+ROOT_DIR = os.path.dirname(os.path.dirname(__file__))