add methods for class Roles + unit tests

* adding get_allroles (list all available roles)
* adding get_display_name (get display name of a role)
* add various unit tests

ldapcherry/roles.py

@@ -198,6 +198,16 @@ class Roles:
         ret['unusedgroups'] = unusedgroups
         return ret
 
+    def get_allroles(self):
+        """get the list of roles"""
+        return self.roles_raw.keys()
+
+    def get_display_name(self, role):
+        """get the display name of a role"""
+        if not role in self.roles_raw:
+            raise MissingRole(role)
+        return self.roles_raw[role]['display_name']
+
     def get_groups(self, role):
         """get the list of groups from role"""
         if not role in self.roles_raw:

misc/debug_roles.py

@@ -37,3 +37,7 @@ groups = {
 
 
 print inv.get_roles(groups)
+
+print inv.get_allroles()
+
+print inv.get_backends()

tests/test_Roles.py

@@ -76,6 +76,37 @@ class TestError(object):
         else:
             raise AssertionError("expected an exception")
 
+    def testGetDisplayNameMissingRole(self):
+        inv = Roles('./tests/cfg/roles.yml')
+        try:
+            res = inv.get_display_name('notarole')
+        except MissingRole:
+            return
+        else:
+            raise AssertionError("expected an exception")
+
+    def testGetDisplayName(self):
+        inv = Roles('./tests/cfg/roles.yml')
+        res = inv.get_display_name('users')
+        expected = 'Simple Users'
+        assert res == expected
+
+    def testGetAllRoles(self):
+        inv = Roles('./tests/cfg/roles.yml')
+        res = inv.get_allroles()
+        expected = ['developpers', 'admin-lv3', 'admin-lv2', 'users']
+        assert res == expected
+
+    def testGetAllRoles(self):
+        inv = Roles('./tests/cfg/roles.yml')
+        res = inv.get_backends()
+        expected = Set(['ad', 'ldap'])
+        assert res == expected
+
+    def testDumpNested(self):
+        inv = Roles('./tests/cfg/roles.yml')
+        inv.dump_nest()
+
     def testAdminRoles(self):
         inv = Roles('./tests/cfg/roles.yml')
         res = inv.get_admin_roles()