Generates tests for python's unittest module (native mod couldn't generate them in easy way). Works good with unittest and nosetests

python.unittest.cases_test.py

# ----------------------------------
# USAGE
# ----------------------------------

from unittest import TestCase
from testargs import TestArgs

class SampleTest(TestCase):
    @TestArgs(
        (None),
        (''),
        ('      '),
    )
    def test_test(self, sample_arg1):
        """ test description """
        self.assertIsNone(sample_arg1)

testargs.py

# ----------------------------------
# thanks to : Xavier Decoret, http://stackoverflow.com/a/4455312/1115187
# ----------------------------------
import sys

def TestArgs(*parameters):
    def tuplify(x):
        if not isinstance(x, tuple):
            return (x,)
        return x

    def decorator(method, parameters=parameters):
        for parameter in (tuplify(x) for x in parameters):

            def method_for_parameter(self, method=method, parameter=parameter):
                method(self, *parameter)
            args_for_parameter = ",".join(repr(v) for v in parameter)
            name_for_parameter = method.__name__ + "(" + args_for_parameter + ")"
            frame = sys._getframe(1)    # pylint: disable-msg=W0212
            frame.f_locals[name_for_parameter] = method_for_parameter
            frame.f_locals[name_for_parameter].__doc__ = method.__doc__ + '(' + args_for_parameter + ')'
            method_for_parameter.__name__ = name_for_parameter + '(' + args_for_parameter + ')'
        return None
    return decorator

It turned out, that the UnitTests in python (at least python2) is a bullshit. It is not cool, when writing the test is more difficult than write the code.

$  nosetests
> test description ('      ') ... FAILED
> test description ('') ... FAILED
> test description (None) ... passed
> sss.TestArgs ... passed

thanks to : Xavier Decoret, http://stackoverflow.com/a/4455312/1115187