telegraf/plugins/inputs/sysstat/sysstat_test.go

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// +build linux
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package sysstat
import (
"fmt"
"os"
"os/exec"
"path"
"testing"
"github.com/influxdata/telegraf/testutil"
)
var s = Sysstat{
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interval: 10,
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Sadc: "/usr/lib/sa/sadc",
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Sadf: "/usr/bin/sadf",
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Group: false,
Activities: []string{"DISK", "SNMP"},
Options: map[string]string{
"C": "cpu",
"d": "disk",
},
DeviceTags: map[string][]map[string]string{
"sda": {
{
"vg": "rootvg",
},
},
},
}
func TestGather(t *testing.T) {
// overwriting exec commands with mock commands
execCommand = fakeExecCommand
defer func() { execCommand = exec.Command }()
var acc testutil.Accumulator
err := s.Gather(&acc)
if err != nil {
t.Fatal(err)
}
cpuTags := map[string]string{"device": "all"}
diskTags := map[string]string{"device": "sda", "vg": "rootvg"}
tests := []struct {
measurement string
fields map[string]interface{}
tags map[string]string
}{
{
"cpu_pct_user",
map[string]interface{}{
"value": 0.65,
},
cpuTags,
},
{
"cpu_pct_nice",
map[string]interface{}{
"value": 0.0,
},
cpuTags,
},
{
"cpu_pct_system",
map[string]interface{}{
"value": 0.10,
},
cpuTags,
},
{
"cpu_pct_iowait",
map[string]interface{}{
"value": 0.15,
},
cpuTags,
},
{
"cpu_pct_steal",
map[string]interface{}{
"value": 0.0,
},
cpuTags,
},
{
"cpu_pct_idle",
map[string]interface{}{
"value": 99.1,
},
cpuTags,
},
{
"disk_tps",
map[string]interface{}{
"value": 0.00,
},
diskTags,
},
{
"disk_rd_sec_per_s",
map[string]interface{}{
"value": 0.00,
},
diskTags,
},
{
"disk_wr_sec_per_s",
map[string]interface{}{
"value": 0.00,
},
diskTags,
},
{
"disk_avgrq-sz",
map[string]interface{}{
"value": 0.00,
},
diskTags,
},
{
"disk_avgqu-sz",
map[string]interface{}{
"value": 0.00,
},
diskTags,
},
{
"disk_await",
map[string]interface{}{
"value": 0.00,
},
diskTags,
},
{
"disk_svctm",
map[string]interface{}{
"value": 0.00,
},
diskTags,
},
{
"disk_pct_util",
map[string]interface{}{
"value": 0.00,
},
diskTags,
},
}
for _, test := range tests {
acc.AssertContainsTaggedFields(t, test.measurement, test.fields, test.tags)
}
}
func TestGatherGrouped(t *testing.T) {
s.Group = true
// overwriting exec commands with mock commands
execCommand = fakeExecCommand
defer func() { execCommand = exec.Command }()
var acc testutil.Accumulator
err := s.Gather(&acc)
if err != nil {
t.Fatal(err)
}
var tests = []struct {
measurement string
fields map[string]interface{}
tags map[string]string
}{
{
"cpu",
map[string]interface{}{
"pct_user": 0.65,
"pct_nice": 0.0,
"pct_system": 0.10,
"pct_iowait": 0.15,
"pct_steal": 0.0,
"pct_idle": 99.1,
},
map[string]string{"device": "all"},
},
{
"disk",
map[string]interface{}{
"tps": 0.00,
"rd_sec_per_s": 0.00,
"wr_sec_per_s": 0.00,
"avgrq-sz": 0.00,
"avgqu-sz": 0.00,
"await": 0.00,
"svctm": 0.00,
"pct_util": 0.00,
},
map[string]string{"device": "sda", "vg": "rootvg"},
},
{
"disk",
map[string]interface{}{
"tps": 2.01,
"rd_sec_per_s": 1.0,
"wr_sec_per_s": 0.00,
"avgrq-sz": 0.30,
"avgqu-sz": 0.60,
"await": 0.70,
"svctm": 0.20,
"pct_util": 0.30,
},
map[string]string{"device": "sdb"},
},
}
for _, test := range tests {
acc.AssertContainsTaggedFields(t, test.measurement, test.fields, test.tags)
}
}
func TestEscape(t *testing.T) {
var tests = []struct {
input string
escaped string
}{
{
"%util",
"pct_util",
},
{
"bread/s",
"bread_per_s",
},
{
"%nice",
"pct_nice",
},
}
for _, test := range tests {
if test.escaped != escape(test.input) {
t.Errorf("wrong escape, got %s, wanted %s", escape(test.input), test.escaped)
}
}
}
// Helper function that mock the exec.Command call (and call the test binary)
func fakeExecCommand(command string, args ...string) *exec.Cmd {
cs := []string{"-test.run=TestHelperProcess", "--", command}
cs = append(cs, args...)
cmd := exec.Command(os.Args[0], cs...)
cmd.Env = []string{"GO_WANT_HELPER_PROCESS=1"}
return cmd
}
// TestHelperProcess isn't a real test. It's used to mock exec.Command
// For example, if you run:
// GO_WANT_HELPER_PROCESS=1 go test -test.run=TestHelperProcess -- sadf -p -- -p -C tmpFile
// it returns mockData["C"] output.
func TestHelperProcess(t *testing.T) {
if os.Getenv("GO_WANT_HELPER_PROCESS") != "1" {
return
}
mockData := map[string]string{
"C": `dell-xps 5 2016-03-25 16:18:10 UTC all %user 0.65
dell-xps 5 2016-03-25 16:18:10 UTC all %nice 0.00
dell-xps 5 2016-03-25 16:18:10 UTC all %system 0.10
dell-xps 5 2016-03-25 16:18:10 UTC all %iowait 0.15
dell-xps 5 2016-03-25 16:18:10 UTC all %steal 0.00
dell-xps 5 2016-03-25 16:18:10 UTC all %idle 99.10
`,
"d": `dell-xps 5 2016-03-25 16:18:10 UTC sda tps 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sda rd_sec/s 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sda wr_sec/s 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sda avgrq-sz 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sda avgqu-sz 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sda await 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sda svctm 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sda %util 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sdb tps 2.01
dell-xps 5 2016-03-25 16:18:10 UTC sdb rd_sec/s 1.00
dell-xps 5 2016-03-25 16:18:10 UTC sdb wr_sec/s 0.00
dell-xps 5 2016-03-25 16:18:10 UTC sdb avgrq-sz 0.30
dell-xps 5 2016-03-25 16:18:10 UTC sdb avgqu-sz 0.60
dell-xps 5 2016-03-25 16:18:10 UTC sdb await 0.70
dell-xps 5 2016-03-25 16:18:10 UTC sdb svctm 0.20
dell-xps 5 2016-03-25 16:18:10 UTC sdb %util 0.30
`,
}
args := os.Args
// Previous arguments are tests stuff, that looks like :
// /tmp/go-build970079519/…/_test/integration.test -test.run=TestHelperProcess --
cmd, args := args[3], args[4:]
// Handle the case where args[0] is dir:...
switch path.Base(cmd) {
case "sadf":
fmt.Fprint(os.Stdout, mockData[args[3]])
default:
}
// some code here to check arguments perhaps?
os.Exit(0)
}