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json_encoder_entry_test.go
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json_encoder_entry_test.go
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package ltsv_test
import (
"errors"
"fmt"
"math"
"testing"
"time"
"go.uber.org/zap"
"go.uber.org/zap/zapcore"
)
func TestJSONEncoder_EncodeEntry(t *testing.T) {
type subtestCase struct {
ent zapcore.Entry
fields []zapcore.Field
want string
}
testCases := []struct {
subtestName string
cfg zapcore.EncoderConfig
cases []subtestCase
}{
{
subtestName: "no time, level and msg config",
cfg: func() zapcore.EncoderConfig {
cfg := zap.NewProductionEncoderConfig()
cfg.TimeKey = ""
cfg.LevelKey = ""
cfg.MessageKey = ""
cfg.EncodeTime = zapcore.ISO8601TimeEncoder
cfg.EncodeDuration = zapcore.StringDurationEncoder
return cfg
}(),
cases: []subtestCase{
{
ent: zapcore.Entry{},
want: "{}\n",
},
{
ent: zapcore.Entry{
Message: "hello, JSON logger",
},
want: "{}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.String("user", "alice"),
},
want: "{\"user\":\"alice\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.String("user", "alice"),
zap.String("group", "adm"),
},
want: "{\"user\":\"alice\",\"group\":\"adm\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Skip(),
},
want: "{}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Stringer("stringer", new(someStringer)),
},
want: "{\"stringer\":\"some\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Strings("users", []string{"alice", "bob"}),
},
want: "{\"users\":[\"alice\",\"bob\"]}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Time("created_at", time.Date(2017, 5, 3, 21, 9, 11, 980000000, time.UTC)),
},
want: fmt.Sprintf("{\"created_at\":\"%s\"}\n", time.Date(2017, 5, 3, 21, 9, 11, 980000000, time.UTC).Local().Format("2006-01-02T15:04:05.000Z0700")),
// NOTE: I would like to time in the specified localation, that is UTC in this case.
//want: "{\"created_at\":\"2017-05-04T06:09:11.980Z\"}\n",
//Actually I got the following result on TZ=JST+9
// "{\"created_at\":\"2017-05-04T06:09:11.980+9000\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Times("period", []time.Time{
time.Date(2017, 5, 3, 21, 9, 11, 980000000, time.UTC),
time.Date(2017, 5, 3, 21, 23, 59, 999999999, time.UTC),
}),
},
want: "{\"period\":[\"2017-05-03T21:09:11.980Z\",\"2017-05-03T21:23:59.999Z\"]}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Uint("a", 0),
zap.Uint("b", 9876),
},
want: "{\"a\":0,\"b\":9876}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Uint16("a", 0),
zap.Uint16("b", 9876),
},
want: "{\"a\":0,\"b\":9876}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Uint16s("a", []uint16{0, 9876}),
},
want: "{\"a\":[0,9876]}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Any("a", []interface{}{2, "foo"}),
},
want: "{\"a\":[2,\"foo\"]}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Complex128("a", 1+2i),
},
want: "{\"a\":\"1+2i\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Duration("a", time.Duration(time.Minute+2*time.Second)),
},
want: "{\"a\":\"1m2s\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Durations("a", []time.Duration{120 * time.Millisecond, time.Minute + 2*time.Second}),
},
want: "{\"a\":[\"120ms\",\"1m2s\"]}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Error(errors.New("error 1")),
},
want: "{\"error\":\"error 1\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Errors("errors", []error{errors.New("error 1"), errors.New("error 2")}),
},
want: "{\"errors\":[{\"error\":\"error 1\"},{\"error\":\"error 2\"}]}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Int("a", 1),
zap.Namespace("ns"),
zap.Int("a", 2),
},
want: "{\"a\":1,\"ns\":{\"a\":2}}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Int("a", 1),
zap.Namespace("ns1"),
zap.Int("a", 2),
zap.Namespace("ns2"),
zap.Int("a", 3),
},
want: "{\"a\":1,\"ns1\":{\"a\":2,\"ns2\":{\"a\":3}}}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Int("a", 1),
zap.Int("b", -1),
zap.Namespace("ns1"),
zap.Int("a", 2),
zap.Int("b", -2),
zap.Namespace("ns2"),
zap.Int("a", 3),
zap.Int("b", -3),
},
want: "{\"a\":1,\"b\":-1,\"ns1\":{\"a\":2,\"b\":-2,\"ns2\":{\"a\":3,\"b\":-3}}}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.ByteString("a", []byte("hello")),
},
want: "{\"a\":\"hello\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.ByteStrings("a", [][]byte{[]byte("hello"), []byte("goodbye")}),
},
want: "{\"a\":[\"hello\",\"goodbye\"]}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Binary("a", []byte{'\xca', '\xfe'}),
},
want: "{\"a\":\"yv4=\"}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Bool("a", true),
zap.Bool("b", false),
},
want: "{\"a\":true,\"b\":false}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Bools("a", []bool{true, false}),
},
want: "{\"a\":[true,false]}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Float64("a", 2.39),
zap.Float64("max", math.MaxFloat64),
zap.Float64("smallestNonZero", math.SmallestNonzeroFloat64),
},
want: "{\"a\":2.39,\"max\":179769313486231570000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000,\"smallestNonZero\":0.000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000000005}\n",
},
{
ent: zapcore.Entry{},
fields: []zapcore.Field{
zap.Uintptr("a", uintptr(2)),
},
want: "{\"a\":2}\n",
},
},
},
{
subtestName: "no time and level config",
cfg: func() zapcore.EncoderConfig {
cfg := zap.NewProductionEncoderConfig()
cfg.TimeKey = ""
cfg.LevelKey = ""
return cfg
}(),
cases: []subtestCase{
{
ent: zapcore.Entry{},
want: "{\"msg\":\"\"}\n",
},
{
ent: zapcore.Entry{
Message: "hello, JSON logger",
},
want: "{\"msg\":\"hello, JSON logger\"}\n",
},
},
},
{
subtestName: "no time config",
cfg: func() zapcore.EncoderConfig {
cfg := zap.NewProductionEncoderConfig()
cfg.TimeKey = ""
return cfg
}(),
cases: []subtestCase{
{
ent: zapcore.Entry{
Level: zapcore.DebugLevel,
},
want: "{\"level\":\"debug\",\"msg\":\"\"}\n",
},
{
ent: zapcore.Entry{
Level: zapcore.InfoLevel,
Message: "hello, JSON logger",
},
want: "{\"level\":\"info\",\"msg\":\"hello, JSON logger\"}\n",
},
},
},
{
subtestName: "production config with ISO8601 time encoder",
cfg: func() zapcore.EncoderConfig {
cfg := zap.NewProductionEncoderConfig()
cfg.EncodeTime = zapcore.ISO8601TimeEncoder
return cfg
}(),
cases: []subtestCase{
{
ent: zapcore.Entry{
Level: zapcore.DebugLevel,
Time: time.Date(2017, 5, 3, 21, 9, 11, 983000000, time.UTC),
},
want: "{\"level\":\"debug\",\"ts\":\"2017-05-03T21:09:11.983Z\",\"msg\":\"\"}\n",
},
{
ent: zapcore.Entry{
Level: zapcore.InfoLevel,
Time: time.Date(2017, 5, 3, 21, 9, 11, 980000000, time.UTC),
Message: "hello, JSON logger",
},
want: "{\"level\":\"info\",\"ts\":\"2017-05-03T21:09:11.980Z\",\"msg\":\"hello, JSON logger\"}\n",
},
},
},
{
subtestName: "production config",
cfg: zap.NewProductionEncoderConfig(),
cases: []subtestCase{
{
ent: zapcore.Entry{
Level: zapcore.DebugLevel,
Time: time.Date(2017, 5, 3, 21, 9, 11, 983000000, time.UTC),
},
want: "{\"level\":\"debug\",\"ts\":1493845751.983,\"msg\":\"\"}\n",
},
{
ent: zapcore.Entry{
Level: zapcore.InfoLevel,
Time: time.Date(2017, 5, 3, 21, 9, 11, 980000000, time.UTC),
Message: "hello, JSON logger",
},
want: "{\"level\":\"info\",\"ts\":1493845751.98,\"msg\":\"hello, JSON logger\"}\n",
},
},
},
}
for _, tc := range testCases {
enc := zapcore.NewJSONEncoder(tc.cfg)
t.Run(tc.subtestName, func(t *testing.T) {
for _, st := range tc.cases {
buf, err := enc.EncodeEntry(st.ent, st.fields)
if err != nil {
t.Fatalf("failed to encode entry; ent=%+v, fields=%+v, err=%+v", st.ent, st.fields, err)
}
got := buf.String()
if got != st.want {
t.Errorf("got=%q, want=%q, ent=%+v, fields=%+v", got, st.want, st.ent, st.fields)
}
}
})
}
}