Added future imports and licenses that are missing
diff --git a/tests/test_fernet.py b/tests/test_fernet.py
index bd4d90a..36e8729 100644
--- a/tests/test_fernet.py
+++ b/tests/test_fernet.py
@@ -11,6 +11,8 @@
 # See the License for the specific language governing permissions and
 # limitations under the License.
 
+from __future__ import absolute_import, division, print_function
+
 import base64
 import calendar
 import json