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|
package service_test
import (
"flag"
"fmt"
"io/ioutil"
"log"
"os"
"path/filepath"
"regexp"
"testing"
"time"
"github.com/kardianos/service"
)
const runAsServiceArg = "RunThisAsService"
func TestMain(m *testing.M) {
reportDir := flag.String("su.reportDir", "", "")
runAsService := flag.Bool("su.runAsService", false, "")
flag.Parse()
if !*runAsService {
os.Exit(m.Run())
}
if len(*reportDir) == 0 {
log.Fatal("missing su.reportDir argument")
}
writeReport(*reportDir, "call")
runService()
writeReport(*reportDir, "finished")
}
func TestInstallRunRestartStopRemove(t *testing.T) {
p := &program{}
reportDir := mustTempDir(t)
defer os.RemoveAll(reportDir)
s := mustNewRunAsService(t, p, reportDir)
_ = s.Uninstall()
if err := s.Install(); err != nil {
t.Fatal("Install", err)
}
defer s.Uninstall()
if err := s.Start(); err != nil {
t.Fatal("Start", err)
}
defer s.Stop()
checkReport(t, reportDir, "Start()", 1, 0)
if err := s.Restart(); err != nil {
t.Fatal("restart", err)
}
checkReport(t, reportDir, "Restart()", 2, 1)
p.numStopped = 0
if err := s.Stop(); err != nil {
t.Fatal("stop", err)
}
checkReport(t, reportDir, "Stop()", 2, 2)
if err := s.Uninstall(); err != nil {
t.Fatal("uninstall", err)
}
}
func runService() {
p := &program{}
sc := &service.Config{
Name: "go_service_test",
}
s, err := service.New(p, sc)
if err != nil {
log.Fatal(err)
}
if err = s.Run(); err != nil {
log.Fatal(err)
}
}
func mustTempDir(t *testing.T) string {
dir, err := ioutil.TempDir("", "servicetest")
if err != nil {
t.Fatal(err)
}
return dir
}
func writeReport(reportDir string, action string) {
b := []byte("go_test_service_report")
timeStamp := time.Now().UnixNano()
err := ioutil.WriteFile(
filepath.Join(reportDir, fmt.Sprintf("%d-%s", timeStamp, action)),
b,
0644,
)
if err != nil {
log.Fatal(err)
}
}
var matchActionRegexp = regexp.MustCompile("^(\\d+-)([a-z]*)$")
func getReport(
t *testing.T,
reportDir string,
) (numCalls int, numFinished int) {
numCalls = 0
numFinished = 0
files, err := ioutil.ReadDir(reportDir)
if err != nil {
t.Fatalf("ReadDir(%s) err: %s", reportDir, err)
}
for _, file := range files {
if matchActionRegexp.MatchString(file.Name()) {
action := matchActionRegexp.ReplaceAllString(file.Name(), "$2")
switch action {
case "call":
numCalls++
case "finished":
numFinished++
default:
t.Fatalf("getReport() found report with incorrect action: %s", action)
}
}
}
return
}
func checkReport(
t *testing.T,
reportDir string,
msgPrefix string,
wantNumCalled int,
wantNumFinished int,
) {
var numCalled int
var numFinished int
for i := 0; i < 25; i++ {
numCalled, numFinished = getReport(t, reportDir)
<-time.After(200 * time.Millisecond)
if numCalled == wantNumCalled && numFinished == wantNumFinished {
return
}
}
if numCalled != wantNumCalled {
t.Fatalf("%s - numCalled: %d, want %d",
msgPrefix, numCalled, wantNumCalled)
}
if numFinished != wantNumFinished {
t.Fatalf("%s - numFinished: %d, want %d",
msgPrefix, numFinished, wantNumFinished)
}
}
func mustNewRunAsService(
t *testing.T,
p *program,
reportDir string,
) service.Service {
sc := &service.Config{
Name: "go_service_test",
Arguments: []string{"-test.v=true", "-su.runAsService", "-su.reportDir", reportDir},
}
s, err := service.New(p, sc)
if err != nil {
t.Fatal(err)
}
return s
}
|
