Use tox instead of pytest-runner

.travis.yml

@@ -4,8 +4,7 @@ python:
 - 2.7
 - 3.5
 script:
-- pip install -U pytest
+- tox
-- python setup.py test
 branches:
   except:
   - skeleton

pytest.ini

@@ -1,4 +1,4 @@
 [pytest]
-norecursedirs=*.egg .eggs dist build
+norecursedirs=dist build .tox
 addopts=--doctest-modules
 doctest_optionflags=ALLOW_UNICODE ELLIPSIS

setup.cfg

@@ -1,7 +1,6 @@
 [aliases]
 release = dists upload
 dists = clean --all sdist bdist_wheel
-test = pytest
 
 [wheel]
 universal = 1

setup.py

@@ -10,8 +10,6 @@ import setuptools
 with io.open('README.rst', encoding='utf-8') as readme:
 	long_description = readme.read()
 
-needs_pytest = {'pytest', 'test'}.intersection(sys.argv)
-pytest_runner = ['pytest_runner'] if needs_pytest else []
 needs_wheel = {'release', 'bdist_wheel', 'dists'}.intersection(sys.argv)
 wheel = ['wheel'] if needs_wheel else []
 
@@ -35,10 +33,7 @@ setup_params = dict(
 	},
 	setup_requires=[
 		'setuptools_scm>=1.9',
-	] + pytest_runner + wheel,
+	] + wheel,
-	tests_require=[
-		'pytest>=2.8',
-	],
 	classifiers=[
 		"Development Status :: 5 - Production/Stable",
 		"Intended Audience :: Developers",

tests/requirements.txt

@@ -0,0 +1 @@
+pytest >= 2.8

tox.ini

@@ -0,0 +1,5 @@
+[testenv]
+deps =
+	-r tests/requirements.txt
+
+commands = py.test