import unittest
import phonebook


class Test(unittest.TestCase):

    def test_add_empty_name_raises_exception(self):
        self.assertRaises(ValueError, phonebook.add, "", "1111111111")

if __name__ == "__main__":
    # import sys;sys.argv = ['', 'Test.testName']
    unittest.main()

import re

_phonebook = {}
file_name = "phonebook.txt"


def is_valid_name(name):
    return re.search(r"([A-Z][a-z]*)([\s\'-][A-Z][a-z]*)*", name) is not None


def is_valid_number(number):
    return re.search(r"+?[d ]+$", number) is not None


def add(name, number):
    try:
        if is_valid_name(name) and is_valid_number(number):
            _phonebook[name] = number
        else:
            raise ValueError("Invalid arguments.", name, number)
    except ValueError as err:
        print err.args


if __name__ == '__main__':
    pass

Finding files... done.
Importing test modules ... done.

('Invalid arguments.', '', '1111111111')
======================================================================
FAIL: test_add_empty_name_raises_exception (path.to.phonebook.test_phonebook.Test)
----------------------------------------------------------------------
Traceback (most recent call last):
  File "pathtophonebooktest_phonebook.py", line 13, in test_add_empty_name_raises_exception
    self.assertRaises(ValueError, phonebook.add, "", "1111111111")
AssertionError: ValueError not raised

----------------------------------------------------------------------
Ran 1 test in 0.002s

def test_add_empty_name_raises_exception(self):
    with self.assertRaises(ValueError):
        self.phonebook.add("", "1111111111)