mirror of
https://github.com/prometheus/prometheus.git
synced 2024-12-27 22:49:40 -08:00
62 lines
1.9 KiB
Go
62 lines
1.9 KiB
Go
// Copyright 2017 The Prometheus Authors
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// Licensed under the Apache License, Version 2.0 (the "License");
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// you may not use this file except in compliance with the License.
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// You may obtain a copy of the License at
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//
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// http://www.apache.org/licenses/LICENSE-2.0
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//
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// Unless required by applicable law or agreed to in writing, software
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// distributed under the License is distributed on an "AS IS" BASIS,
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// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
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// See the License for the specific language governing permissions and
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// limitations under the License.
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package stats
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import (
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"encoding/json"
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"regexp"
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"testing"
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"time"
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)
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func TestTimerGroupNewTimer(t *testing.T) {
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tg := NewTimerGroup()
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timer := tg.GetTimer(ExecTotalTime)
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if duration := timer.Duration(); duration != 0 {
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t.Fatalf("Expected duration of 0, but it was %f instead.", duration)
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}
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minimum := 2 * time.Millisecond
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timer.Start()
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time.Sleep(minimum)
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timer.Stop()
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if duration := timer.Duration(); duration == 0 {
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t.Fatalf("Expected duration greater than 0, but it was %f instead.", duration)
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}
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if elapsed := timer.ElapsedTime(); elapsed < minimum {
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t.Fatalf("Expected elapsed time to be greater than time slept, elapsed was %d, and time slept was %d.", elapsed.Nanoseconds(), minimum)
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}
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}
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func TestQueryStatsWithTimers(t *testing.T) {
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tg := NewTimerGroup()
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timer := tg.GetTimer(ExecTotalTime)
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timer.Start()
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time.Sleep(2 * time.Millisecond)
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timer.Stop()
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qs := NewQueryStats(tg)
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actual, err := json.Marshal(qs)
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if err != nil {
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t.Fatalf("Unexpected error during serialization: %v", err)
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}
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// Timing value is one of multiple fields, unit is seconds (float).
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match, err := regexp.MatchString(`[,{]"execTotalTime":\d+\.\d+[,}]`, string(actual))
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if err != nil {
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t.Fatalf("Unexpected error while matching string: %v", err)
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}
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if !match {
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t.Fatalf("Expected timings with one non-zero entry, but got %s.", actual)
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}
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}
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