To get discovered by nosetests the python files in this directory must be named
test_<sourcefile>.py.

The test case classes should be named 'NameOfTheClassUnderTestTests' and the
test functions should be named 'test_functionundertest_expected_bahavior' e.g.:

# foobar.py
-----
class FooBar(object):
    def baz(self):
        return 'baz
-----

# tests/test_foobar.py
-----
class FooBarTests(unittest.Testcase):

    def setUp(self):
        self.fb = FooBar()

    def test_baz_should_return_baz(self):
        ret_val = self.fb.baz()
        self.assertEqual(ret_val, 'baz')
-----


Use pymox as mocking framework if needed.
apt-get install python-mox3