mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-28 23:19:46 -08:00
56 lines
1.5 KiB
Go
56 lines
1.5 KiB
Go
// Copyright 2019 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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// +build !noprocesses
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package collector
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import (
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"io/ioutil"
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"strconv"
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"strings"
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"testing"
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"github.com/prometheus/client_golang/prometheus"
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)
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func TestPerfCollector(t *testing.T) {
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paranoidBytes, err := ioutil.ReadFile("/proc/sys/kernel/perf_event_paranoid")
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if err != nil {
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t.Skip("Procfs not mounted, skipping perf tests")
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}
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paranoidStr := strings.Replace(string(paranoidBytes), "\n", "", -1)
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paranoid, err := strconv.Atoi(paranoidStr)
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if err != nil {
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t.Fatalf("Expected perf_event_paranoid to be an int, got: %s", paranoidStr)
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}
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if paranoid >= 1 {
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t.Skip("Skipping perf tests, set perf_event_paranoid to 0")
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}
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collector, err := NewPerfCollector()
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if err != nil {
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t.Fatal(err)
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}
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// Setup background goroutine to capture metrics.
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metrics := make(chan prometheus.Metric)
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defer close(metrics)
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go func() {
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for range metrics {
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}
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}()
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if err := collector.Update(metrics); err != nil {
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t.Fatal(err)
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}
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}
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