Config: __str__ raise if no str/unicode value

test/test_config.py

@@ -1,10 +1,11 @@
+# -*- coding: utf-8 -*-
 #this test is much more to test that **it's there** and answers attribute access
 import autopath
 from py.test import raises
 
 from tiramisu.config import Config
 from tiramisu.option import IntOption, FloatOption, StrOption, ChoiceOption, \
-    BoolOption, OptionDescription
+    BoolOption, UnicodeOption, OptionDescription
 
 
 def make_description():
@@ -112,3 +113,15 @@ def test_information_config():
     string = 'some informations'
     config.impl_set_information('info', string)
     assert config.impl_get_information('info') == string
+
+
+def test_information_display():
+    g1 = IntOption('g1', '', 1)
+    g2 = StrOption('g2', '', 'héhé')
+    g3 = UnicodeOption('g3', '', u'héhé')
+    g4 = BoolOption('g4', '', True)
+    g5 = StrOption('g5', '')
+    d1 = OptionDescription('od', '', [g1, g2, g3, g4, g5])
+    root = OptionDescription('root', '', [d1])
+    config = Config(root)
+    str(config.od)