do not change Config contexts properties when reload in MetaConfig (fixes #7)

test/test_storage.py

@@ -6,7 +6,7 @@ from py.test import raises
 
 from tiramisu.error import ConfigError
 from tiramisu import Config, BoolOption, OptionDescription, Leadership, \
-                     list_sessions, delete_session, default_storage
+                     list_sessions, delete_session, default_storage, MetaConfig
 from tiramisu.setting import groups, owners
 
 
@@ -323,6 +323,21 @@ def test_create_persistent_context_property():
         delete_session('test_persistent')
 
 
+def test_create_persistent_context_property_metaconfig():
+    b = BoolOption('b', '')
+    o = OptionDescription('od', '', [b])
+    if default_storage.is_persistent():
+        c = Config(o, session_id='test_persistent', persistent=True)
+        c.property.add('persistent')
+        del c
+        #
+        m = MetaConfig([], optiondescription=o)
+        c = m.config.new(session_id='test_persistent', persistent=True)
+        assert 'persistent' in c.property.get()
+        del c
+        delete_session('test_persistent')
+
+
 def test_create_persistent_property():
     b = BoolOption('b', '')
     o = OptionDescription('od', '', [b])