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tests: Adjust minimum wait/count timers for run_and_expect() if they are too low

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If the developer pass way too low timers, we end up with most likely false-positive
situations for random tests under a high load of the system.

It would be better to fallback to the minimum default values for such a cases.

E.g.:

```
WARNING: topo: Waiting time is too small (count=1, wait=0.5), using default values (count=20, wait=3)
```

Signed-off-by: Donatas Abraitis <donatas@opensourcerouting.org>
This commit is contained in:
Donatas Abraitis 2024-09-13 10:23:51 +03:00
parent afe37c8698
commit 7cc6c9325e
1 changed files with 13 additions and 5 deletions
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18
tests/topotests/lib/topotest.py
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@ -396,6 +396,9 @@ def run_and_expect(func, what, count=20, wait=3):
waiting `wait` seconds between tries. By default it tries 20 times with
3 seconds delay between tries.
Changing default count/wait values, please change them below also for
`minimum_wait`, and `minimum_count`.
Returns (True, func-return) on success or
(False, func-return) on failure.
@ -414,13 +417,18 @@ def run_and_expect(func, what, count=20, wait=3):
# Just a safety-check to avoid running topotests with very
# small wait/count arguments.
# If too low count/wait values are defined, override them
# with the minimum values.
minimum_count = 20
minimum_wait = 3
minimum_wait_time = 15 # The overall minimum seconds for the test to wait
wait_time = wait * count
if wait_time < 5:
assert (
wait_time >= 5
), "Waiting time is too small (count={}, wait={}), adjust timer values".format(
count, wait
if wait_time < minimum_wait_time:
logger.warn(
f"Waiting time is too small (count={count}, wait={wait}), using default values (count={minimum_count}, wait={minimum_wait})"
)
count = minimum_count
wait = minimum_wait
logger.debug(
"'{}' polling started (interval {} secs, maximum {} tries)".format(