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// Copyright 2009 The Go Authors. All rights reserved.
// Use of this source code is governed by a BSD-style
// license that can be found in the LICENSE file.
// +build !windows,!plan9
package syslog
import (
"fmt"
"io"
"log"
"net"
"os"
"testing"
"time"
)
var serverAddr string
func runSyslog(c net.PacketConn, done chan<- string) {
var buf [4096]byte
var rcvd string
for {
c.SetReadDeadline(time.Now().Add(100 * time.Millisecond))
n, _, err := c.ReadFrom(buf[:])
rcvd += string(buf[:n])
if err != nil {
break
}
}
done <- rcvd
}
func startServer(done chan<- string) {
c, e := net.ListenPacket("udp", "127.0.0.1:0")
if e != nil {
log.Fatalf("net.ListenPacket failed udp :0 %v", e)
}
serverAddr = c.LocalAddr().String()
go runSyslog(c, done)
}
func TestNew(t *testing.T) {
if LOG_LOCAL7 != 23<<3 {
t.Fatalf("LOG_LOCAL7 has wrong value")
}
if testing.Short() {
// Depends on syslog daemon running, and sometimes it's not.
t.Skip("skipping syslog test during -short")
}
s, err := New(LOG_INFO|LOG_USER, "")
if err != nil {
t.Fatalf("New() failed: %s", err)
}
// Don't send any messages.
s.Close()
}
func TestNewLogger(t *testing.T) {
if testing.Short() {
t.Skip("skipping syslog test during -short")
}
f, err := NewLogger(LOG_USER|LOG_INFO, 0)
if f == nil {
t.Error(err)
}
}
func TestDial(t *testing.T) {
if testing.Short() {
t.Skip("skipping syslog test during -short")
}
f, err := Dial("", "", (LOG_LOCAL7|LOG_DEBUG)+1, "syslog_test")
if f != nil {
t.Fatalf("Should have trapped bad priority")
}
f, err = Dial("", "", -1, "syslog_test")
if f != nil {
t.Fatalf("Should have trapped bad priority")
}
l, err := Dial("", "", LOG_USER|LOG_ERR, "syslog_test")
if err != nil {
t.Fatalf("Dial() failed: %s", err)
}
l.Close()
}
func TestUDPDial(t *testing.T) {
done := make(chan string)
startServer(done)
l, err := Dial("udp", serverAddr, LOG_USER|LOG_INFO, "syslog_test")
if err != nil {
t.Fatalf("syslog.Dial() failed: %s", err)
}
msg := "udp test"
l.Info(msg)
expected := fmt.Sprintf("<%d>", LOG_USER+LOG_INFO) + "%s %s syslog_test[%d]: udp test\n"
rcvd := <-done
var parsedHostname, timestamp string
var pid int
if hostname, err := os.Hostname(); err != nil {
t.Fatalf("Error retrieving hostname")
} else {
if n, err := fmt.Sscanf(rcvd, expected, ×tamp, &parsedHostname, &pid); n != 3 || err != nil || hostname != parsedHostname {
t.Fatalf("'%q', didn't match '%q' (%d, %s)", rcvd, expected, n, err)
}
}
}
func TestWrite(t *testing.T) {
tests := []struct {
pri Priority
pre string
msg string
exp string
}{
{LOG_USER | LOG_ERR, "syslog_test", "", "%s %s syslog_test[%d]: \n"},
{LOG_USER | LOG_ERR, "syslog_test", "write test", "%s %s syslog_test[%d]: write test\n"},
// Write should not add \n if there already is one
{LOG_USER | LOG_ERR, "syslog_test", "write test 2\n", "%s %s syslog_test[%d]: write test 2\n"},
}
if hostname, err := os.Hostname(); err != nil {
t.Fatalf("Error retrieving hostname")
} else {
for _, test := range tests {
done := make(chan string)
startServer(done)
l, err := Dial("udp", serverAddr, test.pri, test.pre)
if err != nil {
t.Fatalf("syslog.Dial() failed: %s", err)
}
_, err = io.WriteString(l, test.msg)
if err != nil {
t.Fatalf("WriteString() failed: %s", err)
}
rcvd := <-done
test.exp = fmt.Sprintf("<%d>", test.pri) + test.exp
var parsedHostname, timestamp string
var pid int
if n, err := fmt.Sscanf(rcvd, test.exp, ×tamp, &parsedHostname,
&pid); n != 3 || err != nil || hostname != parsedHostname {
t.Fatalf("'%q', didn't match '%q' (%d %s)", rcvd, test.exp,
n, err)
}
}
}
}
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