python retry with tenacity, disable `wait` for unittest

Question

I am using the tenacity library to use its @retry decorator.

I am using this to make a function which makes a HTTP-request \"repeat\" multiple times in

Answer 1

Thanks to discussion here, I found an elegant way to do this based on code from @steveb:

from tenacity import retry, stop_after_attempt, wait_exponential


@retry(reraise=True, stop=stop_after_attempt(5), wait=wait_exponential(multiplier=1, min=4, max=10))
def do_something_flaky(succeed):
    print('Doing something flaky')
    if not succeed:
        print('Failed!')
        raise Exception('Failed!')

And tests:

from unittest import TestCase, mock, skip
from main import do_something_flaky


class TestFlakyRetry(TestCase):
    def test_succeeds_instantly(self):
        try:
            do_something_flaky(True)
        except Exception:
            self.fail('Flaky function should not have failed.')

    def test_raises_exception_immediately_with_direct_mocking(self):
        do_something_flaky.retry.sleep = mock.Mock()
        with self.assertRaises(Exception):
            do_something_flaky(False)

    def test_raises_exception_immediately_with_indirect_mocking(self):
        with mock.patch('main.do_something_flaky.retry.sleep'):
            with self.assertRaises(Exception):
                do_something_flaky(False)

    @skip('Takes way too long to run!')
    def test_raises_exception_after_full_retry_period(self):
        with self.assertRaises(Exception):
            do_something_flaky(False)