8e9cc36979
- packages use tagged logger sending log messages to shared (process-wide) logging engine - log writers (interface ethlog.LogSystem) can be added to the logging engine by wrappers/guis/clients - shared logging engine dispatching to multiple log systems - log level can be set separately per log system - async logging thread: logging IO does not block main thread - log messages are synchronously stringified to avoid incorrectly logging of changed states - README.md - loggers_test
116 lines
2.9 KiB
Go
116 lines
2.9 KiB
Go
package ethlog
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import (
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"testing"
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"fmt"
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"io/ioutil"
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"os"
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)
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type TestLogSystem struct {
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Output string
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level LogLevel
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}
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func (t *TestLogSystem) Println(v ...interface{}) {
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t.Output += fmt.Sprintln(v...)
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}
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func (t *TestLogSystem) Printf(format string, v ...interface{}) {
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t.Output += fmt.Sprintf(format, v...)
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}
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func (t *TestLogSystem) SetLogLevel(i LogLevel) {
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t.level = i
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}
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func (t *TestLogSystem) GetLogLevel() LogLevel {
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return t.level
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}
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func quote(s string) string {
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return fmt.Sprintf("'%s'", s)
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}
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func TestLoggerPrintln(t *testing.T) {
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logger := NewLogger("TEST")
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testLogSystem := &TestLogSystem{level: WarnLevel}
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AddLogSystem(testLogSystem)
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logger.Errorln("error")
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logger.Warnln("warn")
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logger.Infoln("info")
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logger.Debugln("debug")
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Flush()
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output := testLogSystem.Output
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fmt.Println(quote(output))
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if output != "[TEST] error\n[TEST] warn\n" {
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t.Error("Expected logger output '[TEST] error\\n[TEST] warn\\n', got ", quote(testLogSystem.Output))
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}
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}
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func TestLoggerPrintf(t *testing.T) {
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logger := NewLogger("TEST")
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testLogSystem := &TestLogSystem{level: WarnLevel}
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AddLogSystem(testLogSystem)
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logger.Errorf("error to %v\n", *testLogSystem)
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logger.Warnf("warn")
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logger.Infof("info")
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logger.Debugf("debug")
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Flush()
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output := testLogSystem.Output
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fmt.Println(quote(output))
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if output != "[TEST] error to { 2}\n[TEST] warn" {
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t.Error("Expected logger output '[TEST] error to { 2}\\n[TEST] warn', got ", quote(testLogSystem.Output))
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}
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}
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func TestMultipleLogSystems(t *testing.T) {
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logger := NewLogger("TEST")
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testLogSystem0 := &TestLogSystem{level: ErrorLevel}
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testLogSystem1 := &TestLogSystem{level: WarnLevel}
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AddLogSystem(testLogSystem0)
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AddLogSystem(testLogSystem1)
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logger.Errorln("error")
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logger.Warnln("warn")
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Flush()
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output0 := testLogSystem0.Output
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output1 := testLogSystem1.Output
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if output0 != "[TEST] error\n" {
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t.Error("Expected logger 0 output '[TEST] error\\n', got ", quote(testLogSystem0.Output))
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}
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if output1 != "[TEST] error\n[TEST] warn\n" {
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t.Error("Expected logger 1 output '[TEST] error\\n[TEST] warn\\n', got ", quote(testLogSystem1.Output))
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}
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}
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func TestFileLogSystem(t *testing.T) {
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logger := NewLogger("TEST")
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filename := "test.log"
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file, _ := os.OpenFile(filename, os.O_RDWR|os.O_CREATE, os.ModePerm)
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testLogSystem := NewStdLogSystem(file, 0, WarnLevel)
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AddLogSystem(testLogSystem)
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logger.Errorf("error to %s\n", filename)
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logger.Warnln("warn")
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Flush()
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contents, _ := ioutil.ReadFile(filename)
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output := string(contents)
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fmt.Println(quote(output))
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if output != "[TEST] error to test.log\n[TEST] warn\n" {
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t.Error("Expected contents of file 'test.log': '[TEST] error to test.log\\n[TEST] warn\\n', got ", quote(output))
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} else {
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os.Remove(filename)
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}
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}
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func TestNoLogSystem(t *testing.T) {
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logger := NewLogger("TEST")
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logger.Warnln("warn")
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Flush()
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}
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