Make the tox.ini file more flexible

This commit improves two aspects of the tox.ini file:

* Take arguments into account to only run a subset of the tests, eg:
  `tox -e py34 mailman.model.tests.test_subscriptions`
* Make it possible to run pyflakes with the local Python 3 interpreter,
  whichever its version.

1 files changed, 3 insertions, 3 deletions

diff --git a/tox.ini b/tox.ini
index 9c10f9945..9dcec1f25 100644
--- a/tox.ini
+++ b/tox.ini
@@ -5,8 +5,8 @@ skip_missing_interpreters = True
 
 [testenv]
 commands =
-    python -m nose2 -v
-    {coverage,diffcov}: python -m coverage run {[coverage]rc} -m nose2 -v
+    python -m nose2 -v {posargs}
+    {coverage,diffcov}: python -m coverage run {[coverage]rc} -m nose2 -v {posargs}
     {coverage,diffcov}: python -m coverage combine {[coverage]rc}
     coverage: python -m coverage html {[coverage]rc}
     coverage: python -m coverage report -m {[coverage]rc}
@@ -27,7 +27,7 @@ setenv =
     coverage: COVERAGE_FILE={toxinidir}/.coverage
 
 [testenv:qa]
-basepython = python3.5
+basepython = python3
 commands =
     python -m flake8 src
 deps =