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Sort series by labels in requireEqual()

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Tests that look at samples with StaleNaN values will fail because these samples are generated from map iteration and so the order can be unstable.

Signed-off-by: Lukasz Mierzwa <l.mierzwa@gmail.com>
This commit is contained in:
Lukasz Mierzwa 2025-04-28 16:04:18 +01:00
parent e2193f634f
commit c75768739a
1 changed files with 11 additions and 1 deletions
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12
scrape/scrape_test.go
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@ -36,6 +36,7 @@ import (
"github.com/gogo/protobuf/proto"
"github.com/google/go-cmp/cmp"
"github.com/google/go-cmp/cmp/cmpopts"
"github.com/grafana/regexp"
"github.com/prometheus/client_golang/prometheus"
prom_testutil "github.com/prometheus/client_golang/prometheus/testutil"
@ -1992,7 +1993,16 @@ func TestScrapeLoopAppend(t *testing.T) {
func requireEqual(t *testing.T, expected, actual interface{}, msgAndArgs ...interface{}) {
t.Helper()
testutil.RequireEqualWithOptions(t, expected, actual,
[]cmp.Option{cmp.Comparer(equalFloatSamples), cmp.AllowUnexported(histogramSample{})},
[]cmp.Option{
cmp.Comparer(equalFloatSamples),
cmp.AllowUnexported(histogramSample{}),
// StaleNaN samples are generated by iterating over a map, which means that the order
// of samples might be different on every test run. Sort series by label to avoid
// test failures because of that.
cmpopts.SortSlices(func(a, b floatSample) int {
return labels.Compare(a.metric, b.metric)
}),
},
msgAndArgs...)
}