tox-dev#773 revert breaking change of tox.cmdline not callable with n…

…o args

.gitignore

@@ -23,3 +23,5 @@ htmlcov
 .idea
 .eggs/
 py27/
+
+.*_cache

tests/test_z_cmdline.py

@@ -902,8 +902,9 @@ def test_tox_quickstart_script():
 
 
 def test_tox_cmdline(monkeypatch):
+    monkeypatch.setattr(sys, 'args', ['caller_script', '--help'])
     with pytest.raises(SystemExit):
-        tox.cmdline(['caller_script', '--help'])
+        tox.cmdline()
 
 
 @pytest.mark.parametrize('exit_code', [0, 6])

tox/__init__.py

@@ -84,6 +84,6 @@ def __init__(self, message):
             super(exception.MinVersionError, self).__init__(message)
 
 
-from .session import main as cmdline  # noqa
+from .session import run_main as cmdline  # noqa
 
 __all__ = ('hookspec', 'hookimpl', 'cmdline', 'exception', '__version__')