mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-25 05:34:05 -08:00
bf0847073d
The bucket receiving math.MaxFloat64 observations now has math.MaxFloat64 as upper bound, while the bucket after it (the last possible bucket) has +Inf. This also adds a test for getBound and moves the getBound code to generic.go (where it should have been in the first place). Signed-off-by: beorn7 <beorn@grafana.com>
113 lines
1.8 KiB
Go
113 lines
1.8 KiB
Go
// Copyright 2022 The Prometheus Authors
|
|
// Licensed under the Apache License, Version 2.0 (the "License");
|
|
// you may not use this file except in compliance with the License.
|
|
// You may obtain a copy of the License at
|
|
//
|
|
// http://www.apache.org/licenses/LICENSE-2.0
|
|
//
|
|
// Unless required by applicable law or agreed to in writing, software
|
|
// distributed under the License is distributed on an "AS IS" BASIS,
|
|
// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
|
|
// See the License for the specific language governing permissions and
|
|
// limitations under the License.
|
|
|
|
package histogram
|
|
|
|
import (
|
|
"math"
|
|
"testing"
|
|
|
|
"github.com/stretchr/testify/require"
|
|
)
|
|
|
|
func TestGetBound(t *testing.T) {
|
|
scenarios := []struct {
|
|
idx int32
|
|
schema int32
|
|
want float64
|
|
}{
|
|
{
|
|
idx: -1,
|
|
schema: -1,
|
|
want: 0.25,
|
|
},
|
|
{
|
|
idx: 0,
|
|
schema: -1,
|
|
want: 1,
|
|
},
|
|
{
|
|
idx: 1,
|
|
schema: -1,
|
|
want: 4,
|
|
},
|
|
{
|
|
idx: 512,
|
|
schema: -1,
|
|
want: math.MaxFloat64,
|
|
},
|
|
{
|
|
idx: 513,
|
|
schema: -1,
|
|
want: math.Inf(+1),
|
|
},
|
|
{
|
|
idx: -1,
|
|
schema: 0,
|
|
want: 0.5,
|
|
},
|
|
{
|
|
idx: 0,
|
|
schema: 0,
|
|
want: 1,
|
|
},
|
|
{
|
|
idx: 1,
|
|
schema: 0,
|
|
want: 2,
|
|
},
|
|
{
|
|
idx: 1024,
|
|
schema: 0,
|
|
want: math.MaxFloat64,
|
|
},
|
|
{
|
|
idx: 1025,
|
|
schema: 0,
|
|
want: math.Inf(+1),
|
|
},
|
|
{
|
|
idx: -1,
|
|
schema: 2,
|
|
want: 0.8408964152537144,
|
|
},
|
|
{
|
|
idx: 0,
|
|
schema: 2,
|
|
want: 1,
|
|
},
|
|
{
|
|
idx: 1,
|
|
schema: 2,
|
|
want: 1.189207115002721,
|
|
},
|
|
{
|
|
idx: 4096,
|
|
schema: 2,
|
|
want: math.MaxFloat64,
|
|
},
|
|
{
|
|
idx: 4097,
|
|
schema: 2,
|
|
want: math.Inf(+1),
|
|
},
|
|
}
|
|
|
|
for _, s := range scenarios {
|
|
got := getBound(s.idx, s.schema)
|
|
if s.want != got {
|
|
require.Equal(t, s.want, got, "idx %d, schema %d", s.idx, s.schema)
|
|
}
|
|
}
|
|
}
|