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modifier_test.go
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package jsontools_test
import (
"bytes"
"sync"
"testing"
"unicode/utf8"
"github.com/WqyJh/jsontools"
"github.com/stretchr/testify/require"
)
const (
src1 = `[{"Field1":"😄😄😄😄😄","Field2":"MTIzNDU2Nzg5MA==","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"1":"😄😄😄😄😄😄😄😄😄😄","2":"1234567890","3":"1234567890","4":"1234567890","5":"1234567890","6":"1234567890"},"Field5":{"Field1":"1234567890","Field2":"MTIzNDU2Nzg5MA==","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"0":"1234567890","6":"1234567890","7":"1234567890","8":"1234567890","9":"1234567890"},"Field5":"1234567890","Field6":{"Field1":"1234567890"},"Field7":[1,-2.34567890,true,false,null,1.234567890],"Field8":["1234567890","1234567890","1234567890"],"Field9":["1234567890","1234567890","1234567890","1234567890","1234567890","1234567890"],"Field10":"1234567890"},"Field6":null,"Field7":["1234567890","1234567890","1234567890","1234567890","1234567890","1234567890"],"Field8":["1234567890","1234567890","1234567890"],"Field9":["1234567890","1234567890","1234567890","1234567890","1234567890","1234567890"],"Field10":"1234567890"},{"Field1":"1234567890","Field2":"MTIzNDU2Nzg5MA==","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"0":"1234567890","6":"1234567890","7":"1234567890","8":"1234567890","9":"1234567890"},"Field5":"1234567890","Field6":{"Field1":"1234567890"},"Field7":["1234567890","1234567890","1234567890","1234567890","1234567890","1234567890"],"Field8":["1234567890","1234567890","1234567890"],"Field9":["1234567890","1234567890","1234567890","1234567890","1234567890","1234567890"],"Field10":"1234567890"},{"Field1":"1234567890"}]`
)
func TestModifyJson(t *testing.T) {
expected := `[{"Field1":"😄😄😄😄😄","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"1":"😄😄😄😄😄","2":"12345","3":"12345","4":"12345","5":"12345","6":"12345"},"Field5":{"Field1":"12345","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"0":"12345","6":"12345","7":"12345","8":"12345","9":"12345"},"Field5":"12345","Field6":{"Field1":"12345"},"Field7":[1,-2.34567890,true,false,null,1.234567890],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},"Field6":null,"Field7":["12345","12345","12345","12345","12345","12345"],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},{"Field1":"12345","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"0":"12345","6":"12345","7":"12345","8":"12345","9":"12345"},"Field5":"12345","Field6":{"Field1":"12345"},"Field7":["12345","12345","12345","12345","12345","12345"],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},{"Field1":"12345"}]`
srcBytes := bytes.Clone([]byte(src1))
// dstBytes is a new bytes, not change srcBytes
dstBytes, err := jsontools.ModifyJson(srcBytes, jsontools.WithFieldLengthLimit(5))
require.NoError(t, err)
require.JSONEq(t, expected, string(dstBytes))
require.Equal(t, src1, string(srcBytes))
// srcBytes would be changed
dstBytes, err = jsontools.ModifyJson(srcBytes, jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(true))
require.NoError(t, err)
require.JSONEq(t, expected, string(dstBytes))
require.NotEqual(t, expected, string(srcBytes))
// same prefix
require.Equal(t, expected, string(srcBytes[:len(dstBytes)]))
// check all string length
parser := jsontools.NewJsonParser([]byte(expected), func(ctx jsontools.HandlerContext) error {
switch ctx.Kind {
case jsontools.KindArrayValue, jsontools.KindObjectValue:
if ctx.Token == jsontools.String {
require.LessOrEqual(t, utf8.RuneCount(ctx.Value), 5+2)
}
}
return nil
})
require.NoError(t, parser.Parse())
// not change because all string length is less than limit
srcBytes = bytes.Clone([]byte(src1))
dstBytes, err = jsontools.ModifyJson(srcBytes, jsontools.WithFieldLengthLimit(100), jsontools.WithInplace(true))
require.NoError(t, err)
require.Equal(t, src1, string(dstBytes))
require.Equal(t, src1, string(srcBytes))
}
func TestModifyJson2(t *testing.T) {
cases := []struct {
input string
maxLen int
expected string
}{
{``, 5, ``},
{`{}`, 5, `{}`},
{`{"a":"1234567890"}`, 5, `{"a":"12345"}`},
{`{"a":"1234567890"}`, 9, `{"a":"123456789"}`},
{`{"a":"1234567890"}`, 10, `{"a":"1234567890"}`},
{`{"a":"1234567890"}`, 11, `{"a":"1234567890"}`},
{`{"a":"1234567890","b":"1234567890","c":1234567890,"d":1.234567890,"e":true,"f":false,"g":null}`, 5, `{"a":"12345","b":"12345","c":1234567890,"d":1.234567890,"e":true,"f":false,"g":null}`},
{`{"a":"123\"4567890"}`, 5, `{"a":"123\""}`},
{`{"a":"123\"4567890"}`, 6, `{"a":"123\"4"}`},
{`{"a":"123\"4567890"}`, 7, `{"a":"123\"45"}`},
{`{"a":"123\"4567890"}`, 12, `{"a":"123\"4567890"}`},
{`{"a":"123\"4567890"}`, 13, `{"a":"123\"4567890"}`},
{`{"a":"123\\4567890"}`, 6, `{"a":"123\\4"}`},
{
`[{"a":"1234567890","b":"1234567890","c":1234567890,"d":1.234567890,"e":true,"f":false,"g":["1234567890", 1234567890, 1.234567890, "1234", "1234567890"]}, ["1234567890", "1234567890", "1234"], null]`,
5,
`[{"a":"12345","b":"12345","c":1234567890,"d":1.234567890,"e":true,"f":false,"g":["12345", 1234567890, 1.234567890, "1234", "12345"]}, ["12345", "12345", "1234"], null]`,
},
}
for _, c := range cases {
dst, err := jsontools.ModifyJson([]byte(c.input), jsontools.WithFieldLengthLimit(c.maxLen))
require.NoError(t, err)
if c.expected == "" {
require.Equal(t, "", string(dst))
continue
}
require.JSONEq(t, c.expected, string(dst))
}
}
func TestModifyJson3(t *testing.T) {
cases := []struct {
input string
maxLen int
expected string
}{
{`{"a":"\\\\567890"}`, 1, `{"a":""}`},
{`{"a":"\\\\567890"}`, 2, `{"a":"\\"}`},
{`{"a":"\\\\567890"}`, 3, `{"a":"\\"}`},
{`{"a":"\\\\567890"}`, 4, `{"a":"\\\\"}`},
{`{"a":"\\\\567890"}`, 5, `{"a":"\\\\5"}`},
{`{"a":"1234\\\\567890"}`, 4, `{"a":"1234"}`},
{`{"a":"1234\\\\567890"}`, 5, `{"a":"1234"}`},
{`{"a":"1234\\\\567890"}`, 6, `{"a":"1234\\"}`},
{`{"a":"1234\\\\567890"}`, 7, `{"a":"1234\\"}`},
{`{"a":"1234\\\\567890"}`, 8, `{"a":"1234\\\\"}`},
{`{"a":"1234\\\\567890"}`, 9, `{"a":"1234\\\\5"}`},
{`{"a":"1234\\\\567890"}`, 10, `{"a":"1234\\\\56"}`},
}
for i, c := range cases {
dst, err := jsontools.ModifyJson([]byte(c.input), jsontools.WithFieldLengthLimit(c.maxLen))
require.NoError(t, err)
require.JSONEq(t, c.expected, string(dst), i)
}
}
func TestModifyJsonFilterKey(t *testing.T) {
expected := `[{"Field1":"😄😄😄😄😄","Field4":{"1":"😄😄😄😄😄","2":"12345","3":"12345","4":"12345","5":"12345","6":"12345"},"Field6":null,"Field7":["12345","12345","12345","12345","12345","12345"],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},{"Field1":"12345","Field4":{"0":"12345","6":"12345","7":"12345","8":"12345","9":"12345"},"Field6":{"Field1":"12345"},"Field7":["12345","12345","12345","12345","12345","12345"],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},{"Field1":"12345"}]`
dst, err := jsontools.ModifyJson([]byte(src1), jsontools.WithFilterKeys("Field2", "Field3", "Field5"), jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(false))
require.NoError(t, err)
require.JSONEq(t, expected, string(dst))
dst, err = jsontools.ModifyJson([]byte(src1), jsontools.WithFilterKeys("Field2", "Field3", "Field5"), jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(true))
require.NoError(t, err)
require.JSONEq(t, expected, string(dst))
}
func TestModifyJsonFilterKey2(t *testing.T) {
cases := []struct {
input string
maxLen int
expected string
}{
{`{"a":"1234567890","b":1234567890,"c":null}`, 5, `{"a":"12345","c":null}`},
{`{"a":"1234567890","b":1.234567890,"c":2.2}`, 9, `{"a":"123456789","c":2.2}`},
{`{"a":"1234567890","b":true,"c":false}`, 10, `{"a":"1234567890","c":false}`},
{`{"a":"1234567890","b":null,"c":null}`, 11, `{"a":"1234567890","c":null}`},
{`{"a":"1234567890","b":["1234567890",1234567890,1.234567890,true,false,null],"c":null}`, 5, `{"a":"12345","c":null}`},
{`{"a":"123\"4567890"}`, 5, `{"a":"123\""}`},
{`{"a":"123\"4567890"}`, 6, `{"a":"123\"4"}`},
{`{"a":"123\"4567890"}`, 7, `{"a":"123\"45"}`},
{`{"a":"123\"4567890"}`, 12, `{"a":"123\"4567890"}`},
{`{"a":"123\"4567890"}`, 13, `{"a":"123\"4567890"}`},
{`{"a":"123\\4567890"}`, 6, `{"a":"123\\4"}`},
{
`[{"a":"1234567890","b":"1234567890","c":1234567890,"destination":1.234567890,"e":true,"faraway":false,"g":["1234567890", 1234567890, 1.234567890, "1234", "1234567890"]}, ["1234567890", "1234567890", "1234"], null]`,
5,
`[{"a":"12345","c":1234567890,"destination":1.234567890,"e":true,"g":["12345", 1234567890, 1.234567890, "1234", "12345"]}, ["12345", "12345", "1234"], null]`,
},
}
for _, c := range cases {
dst, err := jsontools.ModifyJson([]byte(c.input), jsontools.WithFieldLengthLimit(c.maxLen), jsontools.WithFilterKeys("b", "faraway"))
require.NoError(t, err)
require.JSONEq(t, c.expected, string(dst))
}
}
func TestJsonModifier(t *testing.T) {
expected := `[{"Field1":"😄😄😄😄😄","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"1":"😄😄😄😄😄","2":"12345","3":"12345","4":"12345","5":"12345","6":"12345"},"Field5":{"Field1":"12345","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"0":"12345","6":"12345","7":"12345","8":"12345","9":"12345"},"Field5":"12345","Field6":{"Field1":"12345"},"Field7":[1,-2.34567890,true,false,null,1.234567890],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},"Field6":null,"Field7":["12345","12345","12345","12345","12345","12345"],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},{"Field1":"12345","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"0":"12345","6":"12345","7":"12345","8":"12345","9":"12345"},"Field5":"12345","Field6":{"Field1":"12345"},"Field7":["12345","12345","12345","12345","12345","12345"],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},{"Field1":"12345"}]`
srcBytes := bytes.Clone([]byte(src1))
modifier := jsontools.NewJsonModifier(jsontools.WithFieldLengthLimit(5))
N := 20
for i := 0; i < N; i++ {
// dstBytes is a new bytes, not change srcBytes
dstBytes, err := modifier.ModifyJson(srcBytes)
require.NoError(t, err)
require.JSONEq(t, expected, string(dstBytes))
require.Equal(t, src1, string(srcBytes))
}
modifier = jsontools.NewJsonModifier(jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(true))
for i := 0; i < N; i++ {
srcBytes := bytes.Clone([]byte(src1))
dstBytes, err := modifier.ModifyJson(srcBytes)
require.NoError(t, err)
require.JSONEq(t, expected, string(dstBytes))
require.NotEqual(t, expected, string(srcBytes))
// same prefix
require.Equal(t, expected, string(srcBytes[:len(dstBytes)]))
}
}
func TestJsonModifierConcurrent(t *testing.T) {
expected := `[{"Field1":"😄😄😄😄😄","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"1":"😄😄😄😄😄","2":"12345","3":"12345","4":"12345","5":"12345","6":"12345"},"Field5":{"Field1":"12345","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"0":"12345","6":"12345","7":"12345","8":"12345","9":"12345"},"Field5":"12345","Field6":{"Field1":"12345"},"Field7":[1,-2.34567890,true,false,null,1.234567890],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},"Field6":null,"Field7":["12345","12345","12345","12345","12345","12345"],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},{"Field1":"12345","Field2":"MTIzN","Field3":[1,2,3,4,5,6,7,8,9,0],"Field4":{"0":"12345","6":"12345","7":"12345","8":"12345","9":"12345"},"Field5":"12345","Field6":{"Field1":"12345"},"Field7":["12345","12345","12345","12345","12345","12345"],"Field8":["12345","12345","12345"],"Field9":["12345","12345","12345","12345","12345","12345"],"Field10":"12345"},{"Field1":"12345"}]`
srcBytes := bytes.Clone([]byte(src1))
var wg sync.WaitGroup
N := 100
modifier := jsontools.NewJsonModifier(jsontools.WithFieldLengthLimit(5))
wg.Add(N)
for i := 0; i < N; i++ {
go func() {
defer wg.Done()
// dstBytes is a new bytes, not change srcBytes
dstBytes, err := modifier.ModifyJson(srcBytes)
require.NoError(t, err)
require.JSONEq(t, expected, string(dstBytes))
require.Equal(t, src1, string(srcBytes))
}()
}
wg.Wait()
modifier = jsontools.NewJsonModifier(jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(true))
wg.Add(N)
for i := 0; i < N; i++ {
go func() {
defer wg.Done()
srcBytes := bytes.Clone([]byte(src1))
dstBytes, err := modifier.ModifyJson(srcBytes)
require.NoError(t, err)
require.JSONEq(t, expected, string(dstBytes))
require.NotEqual(t, expected, string(srcBytes))
// same prefix
require.Equal(t, expected, string(srcBytes[:len(dstBytes)]))
}()
}
wg.Wait()
}
func BenchmarkModifyJson(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := jsontools.ModifyJson([]byte(src1), jsontools.WithFieldLengthLimit(5))
require.NoError(b, err)
}
}
func BenchmarkModifyJsonInplace(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := jsontools.ModifyJson([]byte(src1), jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(true))
require.NoError(b, err)
}
}
func BenchmarkModifyJsonFilterKeys(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := jsontools.ModifyJson([]byte(src1), jsontools.WithFilterKeys("Field2", "Field3", "Field5"), jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(false))
require.NoError(b, err)
}
}
func BenchmarkModifyJsonFilterKeysInplace(b *testing.B) {
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := jsontools.ModifyJson([]byte(src1), jsontools.WithFilterKeys("Field2", "Field3", "Field5"), jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(true))
require.NoError(b, err)
}
}
func BenchmarkJsonModifier(b *testing.B) {
modifier := jsontools.NewJsonModifier(jsontools.WithFieldLengthLimit(5))
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := modifier.ModifyJson([]byte(src1))
require.NoError(b, err)
}
}
func BenchmarkJsonModifierInplace(b *testing.B) {
modifier := jsontools.NewJsonModifier(jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(true))
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := modifier.ModifyJson([]byte(src1))
require.NoError(b, err)
}
}
func BenchmarkJsonModifierFilterKeys(b *testing.B) {
modifier := jsontools.NewJsonModifier(jsontools.WithFilterKeys("Field2", "Field3", "Field5"), jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(false))
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := modifier.ModifyJson([]byte(src1))
require.NoError(b, err)
}
}
func BenchmarkJsonModifierFilterKeysInplace(b *testing.B) {
modifier := jsontools.NewJsonModifier(jsontools.WithFilterKeys("Field2", "Field3", "Field5"), jsontools.WithFieldLengthLimit(5), jsontools.WithInplace(true))
b.ResetTimer()
for i := 0; i < b.N; i++ {
_, err := modifier.ModifyJson([]byte(src1))
require.NoError(b, err)
}
}