chore: add a tox job to run black

Gauvain Pocentek · Gauvain Pocentek · commit fb727a1930ac · 2019-06-08T09:00:07.000+02:00
diff --git a/tox.ini b/tox.ini
@@ -1,7 +1,7 @@
 [tox]
 minversion = 1.6
 skipsdist = True
-envlist = py36,py35,py34,py27,pep8
+envlist = py36,py35,py34,py27,pep8,black
 
 [testenv]
 setenv = VIRTUAL_ENV={envdir}
@@ -18,6 +18,11 @@ commands =
 commands =
   flake8 {posargs} gitlab/
 
+[testenv:black]
+basepython = python3
+commands =
+  black {posargs} gitlab
+
 [testenv:venv]
 commands = {posargs}
 
