add tests

tiramisu/config.py

@@ -149,8 +149,6 @@ class SubConfig(object):
             except UnicodeEncodeError:
                 lines.append("{0} = {1}".format(name,
                                                 value.encode(default_encoding)))
-            except PropertiesOptionError:
-                pass
         return '\n'.join(lines)
 
     __repr__ = __str__
@@ -540,7 +538,7 @@ class _CommonConfig(SubConfig):
     # ----- state
     def __getstate__(self):
         if self._impl_meta is not None:
-            raise ConfigError('cannot serialize Config with MetaConfig')
+            raise ConfigError(_('cannot serialize Config with MetaConfig'))
         slots = set()
         for subclass in self.__class__.__mro__:
             if subclass is not object:
@@ -554,8 +552,8 @@ class _CommonConfig(SubConfig):
                 pass
         storage = self._impl_values._p_._storage
         if not storage.serializable:
-            raise ConfigError('this storage is not serialisable, could be a '
-                              'none persistent storage')
+            raise ConfigError(_('this storage is not serialisable, could be a '
+                              'none persistent storage'))
         state['_storage'] = {'session_id': storage.session_id,
                              'persistent': storage.persistent}
         state['_impl_setting'] = _impl_getstate_setting()
@@ -742,6 +740,4 @@ def mandatory_warnings(config):
         except PropertiesOptionError as err:
             if err.proptype == ['mandatory']:
                 yield path
-        except ConfigError:
-            pass
     config.cfgimpl_reset_cache(only=('values',))