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package log_test
import (
"encoding"
"fmt"
"reflect"
"testing"
"time"
"github.com/go-kit/log"
)
func TestValueBinding(t *testing.T) {
t.Parallel()
var output []interface{}
logger := log.Logger(log.LoggerFunc(func(keyvals ...interface{}) error {
output = keyvals
return nil
}))
start := time.Date(2015, time.April, 25, 0, 0, 0, 0, time.UTC)
now := start
mocktime := func() time.Time {
now = now.Add(time.Second)
return now
}
lc := log.With(logger, "ts", log.Timestamp(mocktime), "caller", log.DefaultCaller)
lc.Log("foo", "bar")
timestamp, ok := output[1].(time.Time)
if !ok {
t.Fatalf("want time.Time, have %T", output[1])
}
if want, have := start.Add(time.Second), timestamp; want != have {
t.Errorf("output[1]: want %v, have %v", want, have)
}
if want, have := "value_test.go:31", fmt.Sprint(output[3]); want != have {
t.Errorf("output[3]: want %s, have %s", want, have)
}
// A second attempt to confirm the bindings are truly dynamic.
lc.Log("foo", "bar")
timestamp, ok = output[1].(time.Time)
if !ok {
t.Fatalf("want time.Time, have %T", output[1])
}
if want, have := start.Add(2*time.Second), timestamp; want != have {
t.Errorf("output[1]: want %v, have %v", want, have)
}
if want, have := "value_test.go:44", fmt.Sprint(output[3]); want != have {
t.Errorf("output[3]: want %s, have %s", want, have)
}
}
func TestValueBinding_loggingZeroKeyvals(t *testing.T) {
t.Parallel()
var output []interface{}
logger := log.Logger(log.LoggerFunc(func(keyvals ...interface{}) error {
output = keyvals
return nil
}))
start := time.Date(2015, time.April, 25, 0, 0, 0, 0, time.UTC)
now := start
mocktime := func() time.Time {
now = now.Add(time.Second)
return now
}
logger = log.With(logger, "ts", log.Timestamp(mocktime))
logger.Log()
timestamp, ok := output[1].(time.Time)
if !ok {
t.Fatalf("want time.Time, have %T", output[1])
}
if want, have := start.Add(time.Second), timestamp; want != have {
t.Errorf("output[1]: want %v, have %v", want, have)
}
// A second attempt to confirm the bindings are truly dynamic.
logger.Log()
timestamp, ok = output[1].(time.Time)
if !ok {
t.Fatalf("want time.Time, have %T", output[1])
}
if want, have := start.Add(2*time.Second), timestamp; want != have {
t.Errorf("output[1]: want %v, have %v", want, have)
}
}
func TestTimestampFormat(t *testing.T) {
t.Parallel()
start := time.Date(2015, time.April, 25, 0, 0, 0, 0, time.UTC)
now := start
mocktime := func() time.Time {
now = now.Add(time.Second)
return now
}
tv := log.TimestampFormat(mocktime, time.RFC822)
if want, have := now.Add(time.Second).Format(time.RFC822), fmt.Sprint(tv()); want != have {
t.Errorf("wrong time format: want %v, have %v", want, have)
}
if want, have := now.Add(2*time.Second).Format(time.RFC822), fmt.Sprint(tv()); want != have {
t.Errorf("wrong time format: want %v, have %v", want, have)
}
mustMarshal := func(v interface{}) []byte {
b, err := v.(encoding.TextMarshaler).MarshalText()
if err != nil {
t.Fatal("error marshaling text:", err)
}
return b
}
if want, have := now.Add(3*time.Second).AppendFormat(nil, time.RFC822), mustMarshal(tv()); !reflect.DeepEqual(want, have) {
t.Errorf("wrong time format: want %s, have %s", want, have)
}
if want, have := now.Add(4*time.Second).AppendFormat(nil, time.RFC822), mustMarshal(tv()); !reflect.DeepEqual(want, have) {
t.Errorf("wrong time format: want %s, have %s", want, have)
}
}
func BenchmarkValueBindingTimestamp(b *testing.B) {
logger := log.NewNopLogger()
lc := log.With(logger, "ts", log.DefaultTimestamp)
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
lc.Log("k", "v")
}
}
func BenchmarkValueBindingCaller(b *testing.B) {
logger := log.NewNopLogger()
lc := log.With(logger, "caller", log.DefaultCaller)
b.ReportAllocs()
b.ResetTimer()
for i := 0; i < b.N; i++ {
lc.Log("k", "v")
}
}
|
