test_dynamically_generating.py

import unittest


class TestData(type):

    def __new__(cls, name, bases, attrs):

        callables = dict([
            (meth_name, meth) for (meth_name, meth) in attrs.items() if
	    meth_name.startswith('_test')
	])

        for meth_name, meth in callables.items():
            for i in range(5):
                new_meth_name = meth_name[1:]
                test_name = '{}_{}'.format(new_meth_name, i)
                attrs[test_name] = lambda self: meth(self, i)

        return type.__new__(cls, name, bases, attrs)


class Test(unittest.TestCase):

    __metaclass__ = TestData

    def test_one(self):
        assert True

    def _test_base(self, data):
        assert data != None