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47 lines
1.6 KiB
Python
47 lines
1.6 KiB
Python
import random
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from ansible.compat.tests import unittest
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from ansible.module_utils.cloud import _exponential_backoff, \
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_full_jitter_backoff
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class ExponentialBackoffStrategyTestCase(unittest.TestCase):
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def test_no_retries(self):
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strategy = _exponential_backoff(retries=0)
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result = list(strategy())
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self.assertEquals(result, [], 'list should be empty')
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def test_exponential_backoff(self):
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strategy = _exponential_backoff(retries=5, delay=1, backoff=2)
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result = list(strategy())
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self.assertEquals(result, [1, 2, 4, 8, 16])
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def test_max_delay(self):
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strategy = _exponential_backoff(retries=7, delay=1, backoff=2, max_delay=60)
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result = list(strategy())
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self.assertEquals(result, [1, 2, 4, 8, 16, 32, 60])
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def test_max_delay_none(self):
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strategy = _exponential_backoff(retries=7, delay=1, backoff=2, max_delay=None)
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result = list(strategy())
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self.assertEquals(result, [1, 2, 4, 8, 16, 32, 64])
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class FullJitterBackoffStrategyTestCase(unittest.TestCase):
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def test_no_retries(self):
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strategy = _full_jitter_backoff(retries=0)
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result = list(strategy())
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self.assertEquals(result, [], 'list should be empty')
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def test_full_jitter(self):
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retries = 5
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seed = 1
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r = random.Random(seed)
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expected = [r.randint(0, 2**i) for i in range(0, retries)]
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strategy = _full_jitter_backoff(
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retries=retries, delay=1, _random=random.Random(seed))
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result = list(strategy())
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self.assertEquals(result, expected)
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