func TestJournalCursorGetSeekAndTest(t *testing.T) {
j, err := NewJournal()
if err != nil {
t.Fatalf("Error opening journal: %s", err)
}
if j == nil {
t.Fatal("Got a nil journal")
}
defer j.Close()
waitAndNext := func(j *Journal) error {
r := j.Wait(time.Duration(1) * time.Second)
if r < 0 {
return errors.New("Error waiting to journal")
}
n, err := j.Next()
if err != nil {
return fmt.Errorf("Error reading to journal: %s", err)
}
if n == 0 {
return fmt.Errorf("Error reading to journal: %s", io.EOF)
}
return nil
}
err = journal.Print(journal.PriInfo, "test message for cursor %s", time.Now())
if err != nil {
t.Fatalf("Error writing to journal: %s", err)
}
if err = waitAndNext(j); err != nil {
t.Fatalf(err.Error())
}
c, err := j.GetCursor()
if err != nil {
t.Fatalf("Error getting cursor from journal: %s", err)
}
err = j.SeekCursor(c)
if err != nil {
t.Fatalf("Error seeking cursor to journal: %s", err)
}
if err = waitAndNext(j); err != nil {
t.Fatalf(err.Error())
}
err = j.TestCursor(c)
if err != nil {
t.Fatalf("Error testing cursor to journal: %s", err)
}
}
func TestJournalFollow(t *testing.T) {
r, err := NewJournalReader(JournalReaderConfig{
Since: time.Duration(-15) * time.Second,
Matches: []Match{
{
Field: SD_JOURNAL_FIELD_SYSTEMD_UNIT,
Value: "NetworkManager.service",
},
},
})
if err != nil {
t.Fatalf("Error opening journal: %s", err)
}
if r == nil {
t.Fatal("Got a nil reader")
}
defer r.Close()
// start writing some test entries
done := make(chan struct{}, 1)
defer close(done)
go func() {
for {
select {
case <-done:
return
default:
if err := journal.Print(journal.PriInfo, "test message %s", time.Now()); err != nil {
t.Fatalf("Error writing to journal: %s", err)
}
time.Sleep(time.Second)
}
}
}()
// and follow the reader synchronously
timeout := time.Duration(5) * time.Second
if err = r.Follow(time.After(timeout), os.Stdout); err != ErrExpired {
t.Fatalf("Error during follow: %s", err)
}
}
func (l *JournaldLogger) Log(msg string, args ...interface{}) {
journal.Print(journal.PriInfo, msg, args...)
}