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package log_test
import (
"bytes"
"errors"
"io/ioutil"
"math"
"regexp"
"testing"
kitlog "github.com/go-kit/kit/log"
"github.com/stretchr/testify/assert"
"github.com/tendermint/tmlibs/log"
)
func TestTMFmtLogger(t *testing.T) {
t.Parallel()
buf := &bytes.Buffer{}
logger := log.NewTMFmtLogger(buf)
if err := logger.Log("hello", "world"); err != nil {
t.Fatal(err)
}
assert.Regexp(t, regexp.MustCompile(`N\[.+\] unknown \s+ hello=world\n$`), buf.String())
buf.Reset()
if err := logger.Log("a", 1, "err", errors.New("error")); err != nil {
t.Fatal(err)
}
assert.Regexp(t, regexp.MustCompile(`N\[.+\] unknown \s+ a=1 err=error\n$`), buf.String())
buf.Reset()
err := logger.Log("std_map", map[int]int{1: 2}, "my_map", mymap{0: 0})
assert.NotNil(t, err)
buf.Reset()
if err := logger.Log("level", "error"); err != nil {
t.Fatal(err)
}
assert.Regexp(t, regexp.MustCompile(`E\[.+\] unknown \s+\n$`), buf.String())
buf.Reset()
if err := logger.Log("_msg", "Hello"); err != nil {
t.Fatal(err)
}
assert.Regexp(t, regexp.MustCompile(`N\[.+\] Hello \s+\n$`), buf.String())
}
func BenchmarkTMFmtLoggerSimple(b *testing.B) {
benchmarkRunnerKitlog(b, log.NewTMFmtLogger(ioutil.Discard), baseMessage)
}
func BenchmarkTMFmtLoggerContextual(b *testing.B) {
benchmarkRunnerKitlog(b, log.NewTMFmtLogger(ioutil.Discard), withMessage)
}
func TestTMFmtLoggerConcurrency(t *testing.T) {
t.Parallel()
testConcurrency(t, log.NewTMFmtLogger(ioutil.Discard), 10000)
}
func benchmarkRunnerKitlog(b *testing.B, logger kitlog.Logger, f func(kitlog.Logger)) {
lc := kitlog.With(logger, "common_key", "common_value")
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
f(lc)
}
}
var (
baseMessage = func(logger kitlog.Logger) { logger.Log("foo_key", "foo_value") }
withMessage = func(logger kitlog.Logger) { kitlog.With(logger, "a", "b").Log("d", "f") }
)
// These test are designed to be run with the race detector.
func testConcurrency(t *testing.T, logger kitlog.Logger, total int) {
n := int(math.Sqrt(float64(total)))
share := total / n
errC := make(chan error, n)
for i := 0; i < n; i++ {
go func() {
errC <- spam(logger, share)
}()
}
for i := 0; i < n; i++ {
err := <-errC
if err != nil {
t.Fatalf("concurrent logging error: %v", err)
}
}
}
func spam(logger kitlog.Logger, count int) error {
for i := 0; i < count; i++ {
err := logger.Log("key", i)
if err != nil {
return err
}
}
return nil
}
type mymap map[int]int
func (m mymap) String() string { return "special_behavior" }