BLD: Make CI pass again with pytest 4.5

eric-wieser · eric-wieser · commit 96a40bd197fb · 2019-05-11T15:37:58.000-07:00
diff --git a/pytest.ini b/pytest.ini
@@ -24,3 +24,7 @@ filterwarnings =
 
 env =
     PYTHONHASHSEED=0
+
+markers =
+    valgrind_error: Known to cause errors under valgrind
+    slow: Tests which are slow
