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Versions: 52
Compression:
Stored size: 1.14 KB
Contents
import unittest
from collatz_conjecture import collatz_steps
# Tests adapted from `problem-specifications//canonical-data.json` @ v1.2.0
class CollatzConjectureTests(unittest.TestCase):
def test_zero_steps_for_one(self):
self.assertEqual(collatz_steps(1), 0)
def test_divide_if_even(self):
self.assertEqual(collatz_steps(16), 4)
def test_even_and_odd_steps(self):
self.assertEqual(collatz_steps(12), 9)
def test_large_number_of_even_and_odd_steps(self):
self.assertEqual(collatz_steps(1000000), 152)
def test_zero_is_invalid_input(self):
with self.assertRaisesWithMessage(ValueError):
collatz_steps(0)
def test_negative_number_is_invalid_input(self):
with self.assertRaisesWithMessage(ValueError):
collatz_steps(-15)
# Utility functions
def setUp(self):
try:
self.assertRaisesRegex
except AttributeError:
self.assertRaisesRegex = self.assertRaisesRegexp
def assertRaisesWithMessage(self, exception):
return self.assertRaisesRegex(exception, r".+")
if __name__ == '__main__':
unittest.main()
Version data entries
52 entries across 52 versions & 1 rubygems