check nose.istest __test__ attr issue526

_pytest/python.py

@@ -64,6 +64,17 @@ def getimfunc(func):
         except AttributeError:
             return func
 
+def safe_getattr(object, name, default):
+    """ Like getattr but return default upon any Exception.
+
+    Attribute access can potentially fail for 'evil' Python objects.
+    See issue214
+    """
+    try:
+        return getattr(object, name, default)
+    except Exception:
+        return default
+
 
 class FixtureFunctionMarker:
     def __init__(self, scope, params,
@@ -257,11 +268,10 @@ def pytest_pycollect_makeitem(collector, name, obj):
         raise StopIteration
     # nothing was collected elsewhere, let's do it here
     if isclass(obj):
-        if collector.classnamefilter(name):
+        if collector.istestclass(obj, name):
             Class = collector._getcustomclass("Class")
             outcome.force_result(Class(name, parent=collector))
-    elif collector.funcnamefilter(name) and hasattr(obj, "__call__") and\
+    elif collector.istestfunction(obj, name):
-        getfixturemarker(obj) is None:
         # mock seems to store unbound methods (issue473), normalize it
         obj = getattr(obj, "__func__", obj)
         if not isfunction(obj):
@@ -347,9 +357,24 @@ class PyCollector(PyobjMixin, pytest.Collector):
     def funcnamefilter(self, name):
         return self._matches_prefix_or_glob_option('python_functions', name)
 
+    def isnosetest(self, obj):
+        """ Look for the __test__ attribute, which is applied by the
+        @nose.tools.istest decorator
+        """
+        return safe_getattr(obj, '__test__', False)
+
     def classnamefilter(self, name):
         return self._matches_prefix_or_glob_option('python_classes', name)
 
+    def istestfunction(self, obj, name):
+        return (
+            (self.funcnamefilter(name) or self.isnosetest(obj))
+            and safe_getattr(obj, "__call__", False) and getfixturemarker(obj) is None
+        )
+
+    def istestclass(self, obj, name):
+        return self.classnamefilter(name) or self.isnosetest(obj)
+
     def _matches_prefix_or_glob_option(self, option_name, name):
         """
         checks if the given name matches the prefix or glob-pattern defined
@@ -494,7 +519,7 @@ class FuncFixtureInfo:
 
 
 def _marked(func, mark):
-    """Returns True if :func: is already marked with :mark:, False orherwise.
+    """ Returns True if :func: is already marked with :mark:, False otherwise.
     This can happen if marker is applied to class and the test file is
     invoked more than once.
     """