Whoops. Accidentally removed this.

ionelmc · ionelmc · commit 6ee2070261dd · 2015-09-13T22:18:42.000+03:00
diff --git a/setup.cfg b/setup.cfg
@@ -18,6 +18,9 @@ python_files =
     test_*.py
     *_test.py
     tests.py
+markers =
+    xfail_subclass: Expected test to fail with a subclass of Proxy.
+    xfail_simple: Expected test to fail on the `simple` implementation.
 addopts =
     -rxEfsw
     --strict
