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package testhelper
import (
"io/ioutil"
"testing"
log "github.com/sirupsen/logrus"
)
type testHook struct {
t *testing.T
formatter log.Formatter
}
func (s testHook) Levels() []log.Level {
return []log.Level{
log.DebugLevel,
log.InfoLevel,
log.WarnLevel,
log.ErrorLevel,
log.FatalLevel,
log.PanicLevel,
}
}
func (s testHook) Fire(entry *log.Entry) error {
formatted, err := s.formatter.Format(entry)
if err != nil {
return err
}
formattedString := string(formatted)
switch entry.Level {
case log.FatalLevel, log.PanicLevel:
s.t.Fatal(formattedString)
default:
s.t.Log(formattedString)
}
return nil
}
// NewTestLogger created a logrus hook which can be used with testing logs
func NewTestLogger(t *testing.T) *log.Logger {
logger := log.New()
logger.Out = ioutil.Discard
formatter := &log.TextFormatter{}
logger.Hooks.Add(testHook{t, formatter})
return logger
}
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