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import unittest
import roundrobin
class WeightCase(unittest.TestCase):
def test_basic(self):
data = ["A", "B", "C"]
get_next = roundrobin.basic(data)
result = ''.join([get_next() for _ in range(7)])
self.assertEqual(result, 'ABCABCA')
def test_smooth(self):
data = [("A", 5), ("B", 1), ("C", 1)]
get_next = roundrobin.smooth(data)
result = ''.join([get_next() for _ in range(7)])
self.assertEqual(result, 'AABACAA')
def test_weighted_not_smooth(self):
data = [("A", 5), ("B", 1), ("C", 1)]
get_next = roundrobin.weighted(data)
result = ''.join([get_next() for _ in range(7)])
self.assertEqual(result, 'AAAAABC')
def test_weighted(self):
data = [("A", 50), ("B", 35), ("C", 15)]
get_next = roundrobin.weighted(data)
cnt = {}
for _ in range(100):
key = get_next()
cnt[key] = cnt.get(key, 0) + 1
self.assertTrue(cnt['A'] == 50)
self.assertTrue(cnt['B'] == 35)
self.assertTrue(cnt['C'] == 15)
cnt = {}
for _ in range(200):
key = get_next()
cnt[key] = cnt.get(key, 0) + 1
self.assertTrue(cnt['A'] == 100)
self.assertTrue(cnt['B'] == 70)
self.assertTrue(cnt['C'] == 30)
if __name__ == "__main__":
unittest.main()
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