mirror of
https://github.com/prometheus/node_exporter.git
synced 2024-12-28 06:59:44 -08:00
55 lines
1.7 KiB
Go
55 lines
1.7 KiB
Go
// Copyright 2018 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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"testing"
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"github.com/go-kit/kit/log"
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"github.com/prometheus/procfs"
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kingpin "gopkg.in/alecthomas/kingpin.v2"
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)
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func TestReadProcessStatus(t *testing.T) {
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if _, err := kingpin.CommandLine.Parse([]string{"--path.procfs", "fixtures/proc"}); err != nil {
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t.Fatal(err)
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}
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want := 1
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fs, err := procfs.NewFS(*procPath)
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if err != nil {
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t.Errorf("failed to open procfs: %v", err)
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}
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c := processCollector{fs: fs, logger: log.NewNopLogger()}
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pids, states, threads, err := c.getAllocatedThreads()
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if err != nil {
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t.Fatalf("Cannot retrieve data from procfs getAllocatedThreads function: %v ", err)
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}
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if threads < want {
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t.Fatalf("Current threads: %d Shouldn't be less than wanted %d", threads, want)
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}
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if states == nil {
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t.Fatalf("Process states cannot be nil %v:", states)
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}
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maxPid, err := readUintFromFile(procFilePath("sys/kernel/pid_max"))
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if err != nil {
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t.Fatalf("Unable to retrieve limit number of maximum pids alloved %v\n", err)
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}
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if uint64(pids) > maxPid || pids == 0 {
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t.Fatalf("Total running pids cannot be greater than %d or equals to 0", maxPid)
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}
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}
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