How can I include additional tests if a test passes?

Question

I'm using nose to run some system tests, one of which is to test whether a (config) file exists. If this file exists, I'd like to run some additional tests on it. If not, I'd like to skip a bunch of tests.

What's the best approach to take to make nose include the additional tests if the main test passes?

Answer 1

You could use skipTest from the setUp method in your specific TestCase, like:

import os
from unittest import TestCase

class MyTest(TestCase):
    def setUp(self):
        if not os.path.exists('configfile'):
            return self.skipTest('config file not found')

    def test01(self):
        # Do something with the file
        with open('configfile') as fd:
            self.assertEqual(fd.readlines().__len__(), 0)

test test01 would not run if config file does not exist.