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refactor(histogram): rename types for clarity in histogram conversion tests

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Signed-off-by: Naman-B-Parlecha <namanparlecha@gmail.com>
This commit is contained in:
Naman-B-Parlecha 2025-09-25 17:40:10 +05:30
parent f71f911040
commit ed67a0cbf1
1 changed files with 21 additions and 21 deletions
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42
model/histogram/convert_test.go
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@ -22,13 +22,13 @@ import (
"github.com/prometheus/prometheus/model/labels"
)
type BucketExpectation struct {
type ExpectedBucket struct {
le string
val float64
}
type ExpectedHistogram struct {
buckets []BucketExpectation
type ExpectedClassicHistogram struct {
buckets []ExpectedBucket
count float64
sum float64
}
@ -39,19 +39,19 @@ func TestConvertNHCBToClassicHistogram(t *testing.T) {
nhcb any
labels labels.Labels
expectErr bool
expected ExpectedHistogram
expected ExpectedClassicHistogram
}{
{
name: "Valid Histogram",
nhcb: &Histogram{
CustomValues: []float64{1, 2, 3},
PositiveBuckets: []int64{10, 20, 30}, // Delta format: {10, 20, 30} -> Absolute: {10, 30, 60}
PositiveBuckets: []int64{10, 20, 30},
Count: 60,
Sum: 100.0,
},
labels: labels.FromStrings("__name__", "test_metric"),
expected: ExpectedHistogram{
buckets: []BucketExpectation{
expected: ExpectedClassicHistogram{
buckets: []ExpectedBucket{
{le: "1", val: 10},
{le: "2", val: 30},
{le: "3", val: 60},
@ -70,8 +70,8 @@ func TestConvertNHCBToClassicHistogram(t *testing.T) {
Sum: 100.0,
},
labels: labels.FromStrings("__name__", "test_metric"),
expected: ExpectedHistogram{
buckets: []BucketExpectation{
expected: ExpectedClassicHistogram{
buckets: []ExpectedBucket{
{le: "1", val: 20},
{le: "2", val: 40},
{le: "3", val: 60},
@ -90,8 +90,8 @@ func TestConvertNHCBToClassicHistogram(t *testing.T) {
Sum: 0.0,
},
labels: labels.FromStrings("__name__", "test_metric"),
expected: ExpectedHistogram{
buckets: []BucketExpectation{
expected: ExpectedClassicHistogram{
buckets: []ExpectedBucket{
{le: "+Inf", val: 0},
},
count: 0,
@ -102,7 +102,7 @@ func TestConvertNHCBToClassicHistogram(t *testing.T) {
name: "Missing __name__ label",
nhcb: &Histogram{
CustomValues: []float64{1, 2, 3},
PositiveBuckets: []int64{10, 20, 30}, // Delta format: {10, 20, 30} -> Absolute: {10, 30, 60}
PositiveBuckets: []int64{10, 20, 30},
Count: 60,
Sum: 100.0,
},
@ -119,13 +119,13 @@ func TestConvertNHCBToClassicHistogram(t *testing.T) {
name: "Histogram with zero bucket counts",
nhcb: &Histogram{
CustomValues: []float64{1, 2, 3},
PositiveBuckets: []int64{0, 10, 0}, // Delta format: {0, 10, 0} -> Absolute: {0, 10, 10}
PositiveBuckets: []int64{0, 10, 0},
Count: 10,
Sum: 50.0,
},
labels: labels.FromStrings("__name__", "test_metric"),
expected: ExpectedHistogram{
buckets: []BucketExpectation{
expected: ExpectedClassicHistogram{
buckets: []ExpectedBucket{
{le: "1", val: 0},
{le: "2", val: 10},
{le: "3", val: 10},
@ -139,7 +139,7 @@ func TestConvertNHCBToClassicHistogram(t *testing.T) {
name: "Mismatched bucket lengths",
nhcb: &Histogram{
CustomValues: []float64{1, 2},
PositiveBuckets: []int64{10, 20, 30}, // Mismatched lengths: 2 vs 3
PositiveBuckets: []int64{10, 20, 30},
Count: 60,
Sum: 100.0,
},
@ -150,13 +150,13 @@ func TestConvertNHCBToClassicHistogram(t *testing.T) {
name: "single series Histogram",
nhcb: &Histogram{
CustomValues: []float64{1},
PositiveBuckets: []int64{10}, // Delta format: {10} -> Absolute: {10}
PositiveBuckets: []int64{10},
Count: 10,
Sum: 20.0,
},
labels: labels.FromStrings("__name__", "test_metric"),
expected: ExpectedHistogram{
buckets: []BucketExpectation{
expected: ExpectedClassicHistogram{
buckets: []ExpectedBucket{
{le: "1", val: 10},
{le: "+Inf", val: 10},
},
@ -169,11 +169,11 @@ func TestConvertNHCBToClassicHistogram(t *testing.T) {
labelBuilder := labels.NewBuilder(labels.EmptyLabels())
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
var got ExpectedHistogram
var got ExpectedClassicHistogram
err := ConvertNHCBToClassicHistogram(tt.nhcb, tt.labels, labelBuilder, func(lbls labels.Labels, val float64) error {
switch lbls.Get("__name__") {
case tt.labels.Get("__name__") + "_bucket":
got.buckets = append(got.buckets, BucketExpectation{
got.buckets = append(got.buckets, ExpectedBucket{
le: lbls.Get("le"),
val: val,
})