Fixed #159. Correct bad ErrorClass exception detail

2 files changed, 11 insertions, 5 deletions

diff --git a/nose/plugins/errorclass.py b/nose/plugins/errorclass.py
index 6d95203..b06e014 100644
--- a/nose/plugins/errorclass.py
+++ b/nose/plugins/errorclass.py
@@ -111,11 +111,11 @@ class ErrorClass(object):
     def __init__(self, *errorClasses, **kw):
         self.errorClasses = errorClasses
         try:
-            self.label = kw.pop('label')
-            self.isfailure = kw.pop('isfailure')
-        except KeyError, e:
-            raise TypeError("%s is a required named argument for ErrorClass"
-                            % e)
+            for key in ('label', 'isfailure'):
+                setattr(self, key, kw.pop(key))
+        except KeyError:
+            raise TypeError("%r is a required named argument for ErrorClass"
+                            % key)
 
     def __iter__(self):
         return iter(self.errorClasses)
diff --git a/unit_tests/test_issue_159.rst b/unit_tests/test_issue_159.rst
new file mode 100644
index 0000000..5ab7964
--- /dev/null
+++ b/unit_tests/test_issue_159.rst
@@ -0,0 +1,6 @@
+    >>> from nose.plugins.errorclass import ErrorClass, ErrorClassPlugin
+    >>> class X(Exception):
+    ...     pass
+    >>> xes = ErrorClass(X, label='XXX')
+    Traceback (most recent call last):
+    TypeError: 'isfailure' is a required named argument for ErrorClass