def test_scramble():
for s in ['a', 'rat', 'JavaScript testing', '', 'zzz', '^*&^*&^▱ÄÈËɡɳɷ']:
assert sorted(s) == sorted(scramble(s))
possibilities = set(['ABC', 'ACB', 'BAC', 'BCA', 'CAB', 'CBA'])
for i in range(200):
possibilities.discard(scramble('ABC'))
assert len(possibilities) == 0
def test_scramble(self):
"""Test scrampling a string.
Aside from ensuring that no characters are lost
in the translation, this is rather hard to test
programatically, because randomness can't easily
be measured. Printing out the output shows this
to be pseudorandom.
"""
from collections import Counter
self.assertEqual(Counter(scramble('Hello, world')),
Counter('Hello, world'))
def test_scramble_is_really_random(self):
# Make sure we get all 8 possible scrambles; 200 runs should be sufficient.
possibilities = set('ABC ACB BAC BCA CAB CBA'.split(' '))
for i in range(200):
possibilities.discard(scramble('ABC'))
self.assertEqual(possibilities, set([]))
def test_scramble_scrambles(self):
data = ["", "a", "rat", "BSOD", "BDFL", "Python testing"]
for s in data:
self.assertEqual(sorted(s), sorted(scramble(s)))
def test_scramble_is_really_random(self):
# Make sure we get all 8 possible scrambles; 200 runs should be sufficient.
possibilities = set("ABC ACB BAC BCA CAB CBA".split(" "))
for i in range(200):
possibilities.discard(scramble("ABC"))
self.assertEqual(possibilities, set([]))
def test_scramble_scrambles(self):
data = ["", "a", "rat", "BSOD", "BDFL", "Python testing"]
for s in data:
self.assertEqual(sorted(s), sorted(scramble(s)))
