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logger_writer_test.go
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logger_writer_test.go
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package log
import (
"bytes"
"strings"
"testing"
"github.com/echocat/slf4g/internal/test/assert"
"github.com/echocat/slf4g/level"
)
func Test_LoggingWriter_Write(t *testing.T) {
givenLogger := newMockCoreLogger("foo")
givenLogger.initLoggedEvents()
givenExtractor := level.LineExtractorFunc(func(in []byte) (level.Level, error) {
if strings.HasPrefix(string(in), "I") {
return level.Info, nil
}
if strings.HasPrefix(string(in), "E") {
return level.Error, nil
}
panic("not expected")
})
messageKey := givenLogger.GetProvider().GetFieldKeysSpec().GetMessage()
instance := &LoggingWriter{
Logger: givenLogger,
LevelExtractor: givenExtractor,
SkipFrames: 666,
}
actual1Written, actual1Err := instance.Write([]byte("I hello world!"))
assert.ToBeNil(t, actual1Err)
assert.ToBeEqual(t, 14, actual1Written)
actual2Written, actual2Err := instance.Write([]byte("E hello world!"))
assert.ToBeNil(t, actual2Err)
assert.ToBeEqual(t, 14, actual2Written)
assert.ToBeEqual(t, 2, len(*givenLogger.loggedEvents))
assert.ToBeEqual(t, level.Info, givenLogger.loggedEvent(0).GetLevel())
actualMessage0, _ := givenLogger.loggedEvent(0).Get(messageKey)
assert.ToBeEqual(t, "I hello world!", actualMessage0)
assert.ToBeEqual(t, level.Error, givenLogger.loggedEvent(1).GetLevel())
actualMessage1, _ := givenLogger.loggedEvent(1).Get(messageKey)
assert.ToBeEqual(t, "E hello world!", actualMessage1)
}
func Test_LoggingWriter_Write_withoutLevelExtractor(t *testing.T) {
givenLogger := newMockCoreLogger("foo")
givenLogger.initLoggedEvents()
messageKey := givenLogger.GetProvider().GetFieldKeysSpec().GetMessage()
instance := &LoggingWriter{
Logger: givenLogger,
SkipFrames: 666,
}
actual1Written, actual1Err := instance.Write([]byte("W hello world!"))
assert.ToBeNil(t, actual1Err)
assert.ToBeEqual(t, 14, actual1Written)
actual2Written, actual2Err := instance.Write([]byte("E hello world!"))
assert.ToBeNil(t, actual2Err)
assert.ToBeEqual(t, 14, actual2Written)
assert.ToBeEqual(t, 2, len(*givenLogger.loggedEvents))
assert.ToBeEqual(t, level.Info, givenLogger.loggedEvent(0).GetLevel())
actualMessage0, _ := givenLogger.loggedEvent(0).Get(messageKey)
assert.ToBeEqual(t, "W hello world!", actualMessage0)
assert.ToBeEqual(t, level.Info, givenLogger.loggedEvent(1).GetLevel())
actualMessage1, _ := givenLogger.loggedEvent(1).Get(messageKey)
assert.ToBeEqual(t, "E hello world!", actualMessage1)
}
func Test_LoggingWriter_Write_lineExtractorErrors(t *testing.T) {
givenLogger := newMockCoreLogger("foo")
givenLogger.initLoggedEvents()
givenExtractor := level.LineExtractorFunc(func(in []byte) (level.Level, error) {
return 0, stringError(in)
})
instance := &LoggingWriter{Logger: givenLogger, LevelExtractor: givenExtractor}
actual1Written, actual1Err := instance.Write([]byte("foo"))
assert.ToBeEqual(t, stringError("foo"), actual1Err)
assert.ToBeEqual(t, 0, actual1Written)
actual2Written, actual2Err := instance.Write([]byte("bar"))
assert.ToBeEqual(t, stringError("bar"), actual2Err)
assert.ToBeEqual(t, 0, actual2Written)
assert.ToBeEqual(t, 0, len(*givenLogger.loggedEvents))
}
func Test_LoggingWriter_Write_withoutLogger(t *testing.T) {
instance := &LoggingWriter{}
actual1Written, actual1Err := instance.Write([]byte("foo"))
assert.ToBeNil(t, actual1Err)
assert.ToBeEqual(t, 3, actual1Written)
actual2Written, actual2Err := instance.Write([]byte("foobar"))
assert.ToBeNil(t, actual2Err)
assert.ToBeEqual(t, 6, actual2Written)
}
func Test_LoggingWriter_Write_withInterceptor(t *testing.T) {
givenLogger := newMockCoreLogger("foo")
givenLogger.initLoggedEvents()
givenInterceptor := func(in []byte, lvl level.Level) ([]byte, level.Level, error) {
assert.ToBeEqual(t, level.Warn, lvl)
if bytes.HasPrefix(in, []byte("I ")) {
return in[2:], level.Info, nil
}
if bytes.HasPrefix(in, []byte("E ")) {
return in[2:], level.Error, nil
}
panic("not expected")
}
messageKey := givenLogger.GetProvider().GetFieldKeysSpec().GetMessage()
instance := &LoggingWriter{
Logger: givenLogger,
LevelExtractor: level.FixedLevelExtractor(level.Warn),
Interceptor: givenInterceptor,
SkipFrames: 666,
}
actual1Written, actual1Err := instance.Write([]byte("I hello world!"))
assert.ToBeNil(t, actual1Err)
assert.ToBeEqual(t, 12, actual1Written)
actual2Written, actual2Err := instance.Write([]byte("E hello world!"))
assert.ToBeNil(t, actual2Err)
assert.ToBeEqual(t, 12, actual2Written)
assert.ToBeEqual(t, 2, len(*givenLogger.loggedEvents))
assert.ToBeEqual(t, level.Info, givenLogger.loggedEvent(0).GetLevel())
actualMessage0, _ := givenLogger.loggedEvent(0).Get(messageKey)
assert.ToBeEqual(t, "hello world!", actualMessage0)
assert.ToBeEqual(t, level.Error, givenLogger.loggedEvent(1).GetLevel())
actualMessage1, _ := givenLogger.loggedEvent(1).Get(messageKey)
assert.ToBeEqual(t, "hello world!", actualMessage1)
}
func Test_LoggingWriter_Write_interceptorErrors(t *testing.T) {
givenLogger := newMockCoreLogger("foo")
givenLogger.initLoggedEvents()
givenInterceptor := func(in []byte, lvl level.Level) ([]byte, level.Level, error) {
assert.ToBeEqual(t, level.Warn, lvl)
return nil, 0, stringError(in)
}
instance := &LoggingWriter{
Logger: givenLogger,
LevelExtractor: level.FixedLevelExtractor(level.Warn),
Interceptor: givenInterceptor,
SkipFrames: 666,
}
actual1Written, actual1Err := instance.Write([]byte("foo"))
assert.ToBeEqual(t, stringError("foo"), actual1Err)
assert.ToBeEqual(t, 0, actual1Written)
actual2Written, actual2Err := instance.Write([]byte("bar"))
assert.ToBeEqual(t, stringError("bar"), actual2Err)
assert.ToBeEqual(t, 0, actual2Written)
assert.ToBeEqual(t, 0, len(*givenLogger.loggedEvents))
}