TST: set proper filter warnings for python2

tacaswell · tacaswell · commit c7a69c00a8d9 · 2016-01-03T18:49:29.000-05:00
diff --git a/lib/matplotlib/tests/test_cbook.py b/lib/matplotlib/tests/test_cbook.py
@@ -313,6 +313,7 @@ def dummy(self):
 def _kwarg_norm_helper(inp, expected, kwargs_to_norm, warn_count=0):
 
     with warnings.catch_warnings(record=True) as w:
+        warnings.simplefilter("always")
         assert expected == cbook.normalize_kwargs(inp, **kwargs_to_norm)
         assert len(w) == warn_count
 
