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|
//go:build !binary_log && !windows
// +build !binary_log,!windows
package zerolog
import (
"bytes"
"errors"
"fmt"
"io"
"reflect"
"testing"
)
func TestMultiSyslogWriter(t *testing.T) {
sw := &syslogTestWriter{}
log := New(MultiLevelWriter(SyslogLevelWriter(sw)))
log.Debug().Msg("debug")
log.Info().Msg("info")
log.Warn().Msg("warn")
log.Error().Msg("error")
log.Log().Msg("nolevel")
want := []syslogEvent{
{"Debug", `{"level":"debug","message":"debug"}` + "\n"},
{"Info", `{"level":"info","message":"info"}` + "\n"},
{"Warning", `{"level":"warn","message":"warn"}` + "\n"},
{"Err", `{"level":"error","message":"error"}` + "\n"},
{"Info", `{"message":"nolevel"}` + "\n"},
}
if got := sw.events; !reflect.DeepEqual(got, want) {
t.Errorf("Invalid syslog message routing: want %v, got %v", want, got)
}
}
var writeCalls int
type mockedWriter struct {
wantErr bool
}
func (c mockedWriter) Write(p []byte) (int, error) {
writeCalls++
if c.wantErr {
return -1, errors.New("Expected error")
}
return len(p), nil
}
// Tests that a new writer is only used if it actually works.
func TestResilientMultiWriter(t *testing.T) {
tests := []struct {
name string
writers []io.Writer
}{
{
name: "All valid writers",
writers: []io.Writer{
mockedWriter{
wantErr: false,
},
mockedWriter{
wantErr: false,
},
},
},
{
name: "All invalid writers",
writers: []io.Writer{
mockedWriter{
wantErr: true,
},
mockedWriter{
wantErr: true,
},
},
},
{
name: "First invalid writer",
writers: []io.Writer{
mockedWriter{
wantErr: true,
},
mockedWriter{
wantErr: false,
},
},
},
{
name: "First valid writer",
writers: []io.Writer{
mockedWriter{
wantErr: false,
},
mockedWriter{
wantErr: true,
},
},
},
}
for _, tt := range tests {
writers := tt.writers
multiWriter := MultiLevelWriter(writers...)
logger := New(multiWriter).With().Timestamp().Logger().Level(InfoLevel)
logger.Info().Msg("Test msg")
if len(writers) != writeCalls {
t.Errorf("Expected %d writers to have been called but only %d were.", len(writers), writeCalls)
}
writeCalls = 0
}
}
type testingLog struct {
testing.TB
buf bytes.Buffer
}
func (t *testingLog) Log(args ...interface{}) {
if _, err := t.buf.WriteString(fmt.Sprint(args...)); err != nil {
t.Error(err)
}
}
func (t *testingLog) Logf(format string, args ...interface{}) {
if _, err := t.buf.WriteString(fmt.Sprintf(format, args...)); err != nil {
t.Error(err)
}
}
func TestTestWriter(t *testing.T) {
tests := []struct {
name string
write []byte
want []byte
}{{
name: "newline",
write: []byte("newline\n"),
want: []byte("newline"),
}, {
name: "oneline",
write: []byte("oneline"),
want: []byte("oneline"),
}, {
name: "twoline",
write: []byte("twoline\n\n"),
want: []byte("twoline"),
}}
for _, tt := range tests {
t.Run(tt.name, func(t *testing.T) {
tb := &testingLog{TB: t} // Capture TB log buffer.
w := TestWriter{T: tb}
n, err := w.Write(tt.write)
if err != nil {
t.Error(err)
}
if n != len(tt.write) {
t.Errorf("Expected %d write length but got %d", len(tt.write), n)
}
p := tb.buf.Bytes()
if !bytes.Equal(tt.want, p) {
t.Errorf("Expected %q, got %q.", tt.want, p)
}
log := New(NewConsoleWriter(ConsoleTestWriter(t)))
log.Info().Str("name", tt.name).Msg("Success!")
tb.buf.Reset()
})
}
}
|
