testchallengeone.py

import unittest
import solution
import random


class RandomListOfNumbers:

    def __init__(self):
        self.numbers = [random.randint(1, 1000)
                        for x in range(random.randint(1, 10))]


class TestPowers(unittest.TestCase):

    def setUp(self):
        self.numbers = RandomListOfNumbers().numbers

    def test_type(self):
        self.assertEqual(
            type(solution.powers_of_two_remain(self.numbers)), bool)

if __name__ == '__main__':
    unittest.main()