fix issue48 - test and fix typo in MarkInfo repr

CHANGELOG

@@ -8,6 +8,7 @@ Changes between 2.0.3 and 2.1.0.DEV
 - fix issue43: improve doctests with better traceback reporting on
   unexpected exceptions
 - fix issue47: timing output in junitxml for test cases is now correct
+- fix issue48: typo in MarkInfo repr leading to exception
 - introduce XXX pytest_configure_funcargs hack (thanks Ronny)
 - env/username expansion for junitxml file path (fixes issue44)
 

_pytest/mark.py

@@ -153,7 +153,7 @@ class MarkInfo:
 
     def __repr__(self):
         return "<MarkInfo %r args=%r kwargs=%r>" % (
-                self._name, self.args, self.kwargs)
+                self.name, self.args, self.kwargs)
 
 def pytest_itemcollected(item):
     if not isinstance(item, pytest.Function):

testing/test_mark.py

@@ -2,6 +2,11 @@ import py, pytest
 from _pytest.mark import MarkGenerator as Mark
 
 class TestMark:
+    def test_markinfo_repr(self):
+        from _pytest.mark import MarkInfo
+        m = MarkInfo("hello", (1,2), {})
+        repr(m)
+
     def test_pytest_exists_in_namespace_all(self):
         assert 'mark' in py.test.__all__
         assert 'mark' in pytest.__all__