warnings are errors during tests

diff --git a/tox.ini b/tox.ini
index b4e3afdc0543113e0245f7c92a266e6f1e7802d9..8932304af75b96c14b5ee0f6a970dbb4817f85d2 100644 (file)
--- a/tox.ini
+++ b/tox.ini
@@ -9,7 +9,7 @@ skip_missing_interpreters = true
 deps =
     coverage
     pytest
-commands = coverage run -p -m pytest --tb=short --basetemp={envtmpdir} {posargs}
+commands = coverage run -p -m pytest --tb=short -Werror --basetemp={envtmpdir} {posargs}
 
 [testenv:docs-html]
 deps =