#!/usr/bin/env python
import os
import re
import unittest

TESTS_DIR = 'tests'

matches = [re.match('^(test_(\w+)).\py$', f) for f in os.listdir(TESTS_DIR)]
suite = unittest.TestSuite()
loader = unittest.TestLoader()

for match in filter(None, matches):
    modulename, testname = match.groups()
    classname = re.sub('(?:^|_)([a-z])', lambda m: m.group(1).upper(),
                        testname) + 'Test'
    mod = __import__(TESTS_DIR + '.' + modulename, globals(), locals(),
                     classname)
    suite.addTests(loader.loadTestsFromTestCase(getattr(mod, classname)))

unittest.TextTestRunner().run(suite)