py27 compatibility for ValidationResult

Author: ffigiel

business_logic/core.py

@@ -1,5 +1,7 @@
 import functools
 
+import six
+
 from business_logic.exceptions import LogicException
 
 
@@ -57,6 +59,7 @@ def wrapper(*args, **kwargs):
     return wrapper
 
 
+@six.python_2_unicode_compatible
 class ValidationResult(object):
     """
     Class for storing result of validation function.
@@ -94,4 +97,4 @@ def __repr__(self):
         return u'<PermissionResult success={} error={}>'.format(self.success, self.error)
 
     def __str__(self):
-        return str(self.error) if self.error else u''
+        return six.text_type(self.error) if self.error else u''

tests/test_api.py

@@ -53,6 +53,11 @@ def test_comparision(self):
         # comparision with other types should raise false
         self.assertFalse(success_result == 1)
 
+    def test_unicode_is_handled_properly(self):
+        unicode_text = u'Zażółć gęślą jaźń'
+        result = core.ValidationResult(success=False, error=exceptions.LogicException(unicode_text))
+        self.assertEqual(u'{}'.format(result), unicode_text)
+
 
 class TestValidator(TestCase):