log_test.go

// Copyright 2013 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.

package glog

import (
	"bytes"
	// log"github.com/nohupped/glog"
	"fmt"
)

func ExampleLogger() {
	var buf bytes.Buffer
	Println()
	logger := New(&buf, "logger: ", Lshortfile)
	//file, _ := os.OpenFile("/tmp/testlog.log", os.O_CREATE|os.O_WRONLY|os.O_APPEND, 0666)
	//logger.SetOutput(file)
	strfn := "Errorf()!"
	logger.Errorf("Hello, this is %d Error from %s", 1, strfn)
	logger.Error("Hello, this is 1 Error from Error()!")
	logger.Warnln("Hello, This is from Warnln!") // This will not print because the default loglevel is set to ErrorLevel.
	Info := InfoLevel
	logger.SetLogLevel(&Info)
	logger.Errorln("Hello, This is Error from Errorln!")
	logger.Warnln("Hello, This is Warn from Warnln!")
	logger.Infoln("Hello, This is Info from Infoln!")
	logger.Debugln("Hello, This is Debug from Debugln!") // This will not print because loglevel is set to InfoLevel
	Debug := DebugLevel
	SetStandardLogLevel(&Debug)
	SetFlags(Lshortfile)
	Debugf("This is from %s", strfn)
	Printf("%d error from %s", 1, "Error function")
	Warnf("%d error from %s", 1, "Error function")
	fmt.Println(&buf)


	// Output:
	// logger: log_test.go:20: ERROR: Hello, this is 1 Error from Errorf()!
	// logger: log_test.go:21: ERROR: Hello, this is 1 Error from Error()!
	// logger: log_test.go:25: ERROR: Hello, This is Error from Errorln!
	// logger: log_test.go:26: WARN: Hello, This is Warn from Warnln!
	// logger: log_test.go:27: INFO: Hello, This is Info from Infoln!

}