promql: Add tests for histogram counter reset only in bucket

This also exercises the "fast path" (only decoding count and sum),
i.e. where the counter reset isn't visible at all in the decoded data.

Signed-off-by: beorn7 <beorn@grafana.com>
This commit is contained in:
beorn7 2024-06-06 17:47:38 +02:00
parent 6e68046c25
commit c7fdfe8004

View file

@ -714,3 +714,20 @@ eval instant at 10m histogram_fraction(NaN, NaN, histogram_fraction_4)
eval instant at 10m histogram_fraction(-Inf, +Inf, histogram_fraction_4)
{} 1
clear
# Counter reset only noticeable in a single bucket.
load 5m
reset_in_bucket {{schema:0 count:4 sum:5 buckets:[1 2 1]}} {{schema:0 count:5 sum:6 buckets:[1 1 3]}} {{schema:0 count:6 sum:7 buckets:[1 2 3]}}
eval instant at 10m increase(reset_in_bucket[15m])
{} {{count:9 sum:10.5 buckets:[1.5 3 4.5]}}
# The following two test the "fast path" where only sum and count is decoded.
eval instant at 10m histogram_count(increase(reset_in_bucket[15m]))
{} 9
eval instant at 10m histogram_sum(increase(reset_in_bucket[15m]))
{} 10.5