adding check for reserved password keys

tests/test_Attributes.py

@@ -8,7 +8,7 @@ import pytest
 import sys
 from sets import Set
 from ldapcherry.attributes import Attributes
-from ldapcherry.exceptions import MissingAttributesFile, MissingKey, WrongAttributeType, WrongBackend
+from ldapcherry.exceptions import *
 from ldapcherry.pyyamlwrapper import DumplicatedKey, RelationError
 
 class TestError(object):
@@ -81,6 +81,14 @@ class TestError(object):
         else:
             raise AssertionError("expected an exception")
 
+    def testDuplicatePassword(self):
+        try:
+            inv = Attributes('./tests/cfg/attribute_pwderror.yml')
+        except PasswordAttributesCollision:
+            return
+        else:
+            raise AssertionError("expected an exception")
+
 #    def testGetDisplayName(self):
 #        inv = Attributes('./tests/cfg/attributes.yml')
 #        res = inv.get_display_name('users')