Unify running unit tests under unittest2

There are three ways to run the tests. This is unfortunate, but
with this commit they're all going through the same code paths.

* As a developer, use "python setup.py test". This runs them in
  the current development directory and does not require a
  virtualenv to be set up.

* As a contributor, your pull requests will be tested on Travis CI.
  The configuration for that is in .travis.yml. This runs the test
  suite on all supported platforms.

* As a release maintainer, install tox (in a virtualenv?) and run
  "tox" in the toplevel Park source tree to build a source
  distribution and run the test suite on supported platforms.

.travis.yml

@@ -4,4 +4,7 @@ python:
   - "2.6"
 
 install: pip install -r test-requirements.txt --use-mirrors
-script: python setup.py check
+script:
+  pep8 park.py test_park.py
+  pyflakes park.py test_park.py
+  python setup.py test

MANIFEST.in

@@ -1 +1,4 @@
-include README.rst LICENSE test_park.py
+include README.rst
+include LICENSE
+include test_park.py
+include test-requirements.txt

README.hacking.rst

@@ -0,0 +1,17 @@
+Welcome!
+
+There are three ways the Park unit test suite is run.
+
+As a *developer*, use ``python setup.py test``. This runs the suite in
+the current development directory and does not require a virtualenv to
+be set up.
+
+As a *contributor*, your Github pull requests will be tested on Travis
+CI. The configuration for that is in .travis.yml. This runs the test
+suite on all supported platforms, which are enumerated in that file.
+
+As a *release maintainer*, install ``tox`` (in a virtualenv is fine)
+and run it in the top level Park source directory. This will build a
+source distribution, install that into a virtualenv for each supported
+platform, and run the test suite in each.
+

setup.py

@@ -2,40 +2,16 @@
 # coding: utf-8
 
 import park
-import sys
 
 # Require setuptools. See http://pypi.python.org/pypi/setuptools for
 # installation instructions, or run the ez_setup script found at
 # http://peak.telecommunity.com/dist/ez_setup.py
-from setuptools import setup, find_packages, Command
+from setuptools import setup
 
-class CheckCommand(Command):
-    description = "Run tests."
-    user_options = []
-
-    def initialize_options(self):
-        pass
-
-    def finalize_options(self):
-        pass
-
-    def run(self):
-        import subprocess
-
-        print "Running pep8..."
-        if subprocess.call(["pep8", "park.py", "test_park.py"]):
-            sys.exit("ERROR: failed pep8 checks")
-
-        print "Running pyflakes..."
-        if subprocess.call(["pyflakes", "park.py", "test_park.py"]):
-            sys.exit("ERROR: failed pyflakes checks")
-
-        print "Running tests..."
-        if subprocess.call(["coverage", "run", "--source=park,test_park",
-                            "./setup.py", "test"]):
-            sys.exit("ERROR: failed unit tests")
-
-        subprocess.call(['coverage', 'report', '-m'])
+# Load the test requirements. These are in a separate file so they can
+# be accessed from Travis CI and tox.
+with open("test-requirements.txt") as fd:
+    tests_require = list(fd.xreadlines())
 
 
 setup(
@@ -47,16 +23,14 @@ def run(self):
     url = "https://github.com/litl/park",
     description="A key-value store with ordered traversal of keys",
     py_modules=["park"],
-    test_suite="unittest2.collector",
-
-    cmdclass = {
-        "check": CheckCommand
-        },
 
     setup_requires = [
         "unittest2==0.5.1"
     ],
 
+    test_suite="unittest2.collector",
+    tests_require = tests_require,
+
     classifiers = [
         "Development Status :: 5 - Production/Stable",
         "Intended Audience :: Developers",

tox.ini

@@ -3,8 +3,9 @@ envlist = py26, py27
 
 [testenv]
 deps=
-    flake8==1.4
+    -r{toxinidir}/test-requirements.txt
 
 commands=
-    flake8 park.py test_park.py
+    pep8 park.py test_park.py
+    pyflakes park.py test_park.py
     python setup.py test