90 lines
3.0 KiB
Python
Executable File
90 lines
3.0 KiB
Python
Executable File
#!/usr/bin/python2
|
|
#
|
|
# Copyright 2015 The Chromium OS Authors. All rights reserved.
|
|
# Use of this source code is governed by a BSD-style license that can be
|
|
# found in the LICENSE file.
|
|
|
|
"""Unittests for server/cros/dynamic_suite/frontend_wrappers.py"""
|
|
|
|
import mox
|
|
import unittest
|
|
|
|
import common
|
|
|
|
from autotest_lib.server.cros.dynamic_suite import frontend_wrappers
|
|
|
|
|
|
class FrontendWrappersTest(mox.MoxTestBase):
|
|
"""Unit tests for frontend_wrappers global functions."""
|
|
|
|
def testConvertTimeoutToRetryBasic(self):
|
|
"""Test converting timeout and delay values to retry attempts."""
|
|
backoff = 2
|
|
timeout_min = 10
|
|
delay_sec = 10
|
|
|
|
max_retry = frontend_wrappers.convert_timeout_to_retry(backoff,
|
|
timeout_min,
|
|
delay_sec)
|
|
|
|
self.assertEquals(max_retry, 6)
|
|
|
|
def testConvertTimeoutToRetryLimit(self):
|
|
"""Test approaching a change in attempt amount."""
|
|
backoff = 2
|
|
delay_sec = 10
|
|
timeout_min_lower_limit = 42.499999
|
|
timeout_min_at_limit = 42.5
|
|
timeout_min_upper_limit = 42.599999
|
|
|
|
max_retry_lower_limit = frontend_wrappers.convert_timeout_to_retry(
|
|
backoff, timeout_min_lower_limit, delay_sec)
|
|
|
|
max_retry_at_limit = frontend_wrappers.convert_timeout_to_retry(
|
|
backoff, timeout_min_at_limit, delay_sec)
|
|
|
|
max_retry_upper_limit = frontend_wrappers.convert_timeout_to_retry(
|
|
backoff, timeout_min_upper_limit, delay_sec)
|
|
|
|
# Eight attempts with a backoff factor of two should be sufficient
|
|
# for timeouts up to 2550 seconds (or 42.5 minutes).
|
|
self.assertEquals(max_retry_lower_limit, 8)
|
|
self.assertEquals(max_retry_at_limit, 8)
|
|
|
|
# We expect to see nine attempts, as we are above the 42.5 minute
|
|
# threshold.
|
|
self.assertEquals(max_retry_upper_limit, 9)
|
|
|
|
def testConvertTimeoutToRetrySmallTimeout(self):
|
|
"""Test converting to retry attempts when a small timeout is used."""
|
|
backoff = 2
|
|
timeout_min = 0.01
|
|
delay_sec = 10
|
|
|
|
max_retry = frontend_wrappers.convert_timeout_to_retry(backoff,
|
|
timeout_min,
|
|
delay_sec)
|
|
|
|
# The number of attempts should be less than one using the formula
|
|
# outlined in the function, but, we always round up to the nearest
|
|
# integer.
|
|
self.assertEquals(max_retry, 1)
|
|
|
|
def testConvertTimeoutToRetrySmallDelay(self):
|
|
"""Test converting to retry attempts when the delay is small."""
|
|
backoff = 2
|
|
timeout_min = 30
|
|
delay_sec = 0.01
|
|
|
|
max_retry = frontend_wrappers.convert_timeout_to_retry(backoff,
|
|
timeout_min,
|
|
delay_sec)
|
|
|
|
# The number of retries shouldn't be too large despite the small
|
|
# delay as a result of backing off in an exponential fashion.
|
|
self.assertEquals(max_retry, 18)
|
|
|
|
|
|
if __name__ == '__main__':
|
|
unittest.main()
|