require pytest

Author: pgajdos

tox.ini

@@ -38,6 +38,7 @@ deps =
     notebook50: https://github.com/jupyter/notebook/archive/5.0.0.zip
     notebookmaster: https://github.com/jupyter/notebook/archive/master.zip
     notebook: notebook
+    pytest
 commands =
     {posargs:coverage run --source=src -m nose -vv tests}