test.py

import unittest
import numpy as np

from stdev_code import stdev_p, stdev_s

class TestStdevCode(unittest.TestCase):
    def setUp(self):
        self.data = []
        for x in xrange(100):
            self.data.append(np.random.uniform(0,50000000000,1000))

    def test_population_deviation(self):
        for data in self.data:
            self.assertAlmostEqual(stdev_p(data), np.std(data, ddof=0), places=3)
    def test_sample_deviation(self):
        for data in self.data:
            self.assertAlmostEqual(stdev_s(data), np.std(data, ddof=1), places=3)

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