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promql: Add tests for histogram counter reset only in bucket

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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
1 changed files with 17 additions and 0 deletions
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17
promql/promqltest/testdata/native_histograms.test vendored
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@ -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) eval instant at 10m histogram_fraction(-Inf, +Inf, histogram_fraction_4)
{} 1 {} 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