- Misunderstood setup.py aliases, removed test alias.

- Renamed test file and function because otherwise test detection fails.
- Set py.test to verbose.
- Moved flake8 settings from tox.ini to setup.cfg (in case of moving away from
  tox).

setup.cfg

 [bdist_wheel]
-# This flag says that the code is written to work on both Python 2 and Python
-# 3. If at all possible, it is good practice to do this. If you cannot, you
-# will need to generate wheels for each Python version that you support.
 universal=1
+
+[flake8]
+ignore=F403
+exclude = .tox,*.egg,build,data,unshare/constants.py

tests/basic_assertions_test.py → tests/test_basic_assertions.py

 import unshare
 
 
-def import_assestions():
+def test_import_assestions():
     for macro in 'CLONE_NEWUTS', 'MS_SHARED':
         assert macro in dir(unshare)
     for function in 'clone', 'pivot_root':

tox.ini

-[flake8]
-ignore=F403
-exclude = .tox,*.egg,build,data,unshare/constants.py
-
 [tox]
 envlist = py{2,3}
 
@@ -18,4 +14,4 @@ commands =
     check-manifest --ignore tox.ini,tests*
     python setup.py check -m -r -s
     flake8 .
-    py.test
+    py.test --verbose