fix on unit tests for roles

tests/cfg/roles_content_dump.yml

@@ -7,7 +7,6 @@ users2:
       - backend_name: ad
         groups:
             - Domain Users
-
 users:
     diplay_name: Simple Users
     LC_admins: True

tests/cfg/roles_missing_diplay_name.yml

@@ -13,7 +13,6 @@ admin-lv3:
              - Domain Users
              - Administrators
              - Domain Controllers 
-
 admin-lv2:
     display_name: Administrators Level 2
     backends:
@@ -24,7 +23,6 @@ admin-lv2:
       - backend_name: ad
         groups:
             - Domain Users
-
 developpers:
     backends:
       - backend_name: ldap
@@ -35,7 +33,6 @@ developpers:
       - backend_name: ad
         groups:
             - Domain Users
-
 users:
     diplay_name: Simple Users
     backends:

tests/test_Roles.py

@@ -7,6 +7,7 @@ from __future__ import unicode_literals
 import pytest
 import sys
 from ldapcherry.roles import Roles
+from ldapcherry.exceptions import DumplicateRoleKey, MissingKey, DumplicateRoleContent
 from ldapcherry.pyyamlwrapper import DumplicatedKey, RelationError
 
 
@@ -19,7 +20,7 @@ class TestError(object):
 
     def testMissingDisplayName(self):
         try:
-            inv = Roles('./cfg/roles_missing_diplay_name.yml')
+            inv = Roles('./tests/cfg/roles_missing_diplay_name.yml')
         except MissingKey:
             return
         else: