Interval is not working about pyotp

[kislyuk]

Thanks for your report. I am unable to reproduce this issue. Can you please provide a full reproduction, including the code you used, the expected outcome, and the observed outcome?

[vladimir-poghosyan]

I have also encountered issues related to interval. I have written the following test, which fails, although the interval is set to 120 seconds (greater than tested waiting times):

from time import sleep

import pyotp
import pytest


@pytest.mark.parametrize('wait', (25, 55, 85, 105, 115))
def test_totp(wait: int) -> None:
    totp = pyotp.TOTP(pyotp.random_base32(), interval=120)
    code = totp.now()
    sleep(wait)
    assert totp.verify(code)

And here are the results:

============================================ short test summary info =============================================
FAILED test-totp-interval.py::test_totp[55] - AssertionError: assert False
FAILED test-totp-interval.py::test_totp[105] - AssertionError: assert False
FAILED test-totp-interval.py::test_totp[115] - AssertionError: assert False
==================================== 3 failed, 2 passed in 385.04s (0:06:25) =====================================

Testing environment:

• Python 3.11.3
• pyotp 2.8.0
• pytest 7.3.2

[kislyuk]

@vladimir-poghosyan that is a misunderstanding of how TOTP works. The interval doesn't start when your test starts, it starts when the time since the epoch modulo the interval is zero.

I am going to close this issue now, since neither report has a valid reproduction.