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| 1 | +// Copyright 2022 The etcd Authors |
| 2 | +// |
| 3 | +// Licensed under the Apache License, Version 2.0 (the "License"); |
| 4 | +// you may not use this file except in compliance with the License. |
| 5 | +// You may obtain a copy of the License at |
| 6 | +// |
| 7 | +// http://www.apache.org/licenses/LICENSE-2.0 |
| 8 | +// |
| 9 | +// Unless required by applicable law or agreed to in writing, software |
| 10 | +// distributed under the License is distributed on an "AS IS" BASIS, |
| 11 | +// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| 12 | +// See the License for the specific language governing permissions and |
| 13 | +// limitations under the License. |
| 14 | + |
| 15 | +package txn |
| 16 | + |
| 17 | +import ( |
| 18 | + "strings" |
| 19 | + "testing" |
| 20 | + "time" |
| 21 | + |
| 22 | + "github.com/prometheus/client_golang/prometheus/testutil" |
| 23 | + "github.com/stretchr/testify/require" |
| 24 | +) |
| 25 | + |
| 26 | +func TestRangeSecObserve(t *testing.T) { |
| 27 | + // Simulate a range operation taking 500 milliseconds. |
| 28 | + latency := 500 * time.Millisecond |
| 29 | + RangeSecObserve(true, latency) |
| 30 | + |
| 31 | + // Use testutil to collect the results and check against expected value |
| 32 | + expected := ` |
| 33 | +# HELP etcd_server_range_duration_seconds The latency distributions of txn.Range |
| 34 | +# TYPE etcd_server_range_duration_seconds histogram |
| 35 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0001"} 0 |
| 36 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0002"} 0 |
| 37 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0004"} 0 |
| 38 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0008"} 0 |
| 39 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0016"} 0 |
| 40 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0032"} 0 |
| 41 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0064"} 0 |
| 42 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0128"} 0 |
| 43 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0256"} 0 |
| 44 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.0512"} 0 |
| 45 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.1024"} 0 |
| 46 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.2048"} 0 |
| 47 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.4096"} 0 |
| 48 | +etcd_server_range_duration_seconds_bucket{success="true",le="0.8192"} 1 |
| 49 | +etcd_server_range_duration_seconds_bucket{success="true",le="1.6384"} 1 |
| 50 | +etcd_server_range_duration_seconds_bucket{success="true",le="3.2768"} 1 |
| 51 | +etcd_server_range_duration_seconds_bucket{success="true",le="6.5536"} 1 |
| 52 | +etcd_server_range_duration_seconds_bucket{success="true",le="13.1072"} 1 |
| 53 | +etcd_server_range_duration_seconds_bucket{success="true",le="26.2144"} 1 |
| 54 | +etcd_server_range_duration_seconds_bucket{success="true",le="52.4288"} 1 |
| 55 | +etcd_server_range_duration_seconds_bucket{success="true",le="+Inf"} 1 |
| 56 | +etcd_server_range_duration_seconds_sum{success="true"} 0.5 |
| 57 | +etcd_server_range_duration_seconds_count{success="true"} 1 |
| 58 | +` |
| 59 | + |
| 60 | + err := testutil.CollectAndCompare(rangeSec, strings.NewReader(expected)) |
| 61 | + require.NoError(t, err, "Collected metrics did not match expected metrics: %v", err) |
| 62 | +} |
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