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|
package misc_tests
import (
"encoding/json"
"github.com/json-iterator/go"
"reflect"
"strings"
"testing"
)
type Level1 struct {
Hello []Level2
}
type Level2 struct {
World string
}
func Test_deep_nested(t *testing.T) {
type unstructured interface{}
testcases := []struct {
name string
data []byte
expectError string
}{
{
name: "array under maxDepth",
data: []byte(`{"a":` + strings.Repeat(`[`, 10000-1) + strings.Repeat(`]`, 10000-1) + `}`),
expectError: "",
},
{
name: "array over maxDepth",
data: []byte(`{"a":` + strings.Repeat(`[`, 10000) + strings.Repeat(`]`, 10000) + `}`),
expectError: "max depth",
},
{
name: "object under maxDepth",
data: []byte(`{"a":` + strings.Repeat(`{"a":`, 10000-1) + `0` + strings.Repeat(`}`, 10000-1) + `}`),
expectError: "",
},
{
name: "object over maxDepth",
data: []byte(`{"a":` + strings.Repeat(`{"a":`, 10000) + `0` + strings.Repeat(`}`, 10000) + `}`),
expectError: "max depth",
},
}
targets := []struct {
name string
new func() interface{}
}{
{
name: "unstructured",
new: func() interface{} {
var v interface{}
return &v
},
},
{
name: "typed named field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
}{}
return &v
},
},
{
name: "typed missing field",
new: func() interface{} {
v := struct {
B interface{} `json:"b"`
}{}
return &v
},
},
{
name: "typed 1 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
}{}
return &v
},
},
{
name: "typed 2 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
}{}
return &v
},
},
{
name: "typed 3 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
}{}
return &v
},
},
{
name: "typed 4 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
D interface{} `json:"d"`
}{}
return &v
},
},
{
name: "typed 5 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
D interface{} `json:"d"`
E interface{} `json:"e"`
}{}
return &v
},
},
{
name: "typed 6 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
D interface{} `json:"d"`
E interface{} `json:"e"`
F interface{} `json:"f"`
}{}
return &v
},
},
{
name: "typed 7 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
D interface{} `json:"d"`
E interface{} `json:"e"`
F interface{} `json:"f"`
G interface{} `json:"g"`
}{}
return &v
},
},
{
name: "typed 8 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
D interface{} `json:"d"`
E interface{} `json:"e"`
F interface{} `json:"f"`
G interface{} `json:"g"`
H interface{} `json:"h"`
}{}
return &v
},
},
{
name: "typed 9 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
D interface{} `json:"d"`
E interface{} `json:"e"`
F interface{} `json:"f"`
G interface{} `json:"g"`
H interface{} `json:"h"`
I interface{} `json:"i"`
}{}
return &v
},
},
{
name: "typed 10 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
D interface{} `json:"d"`
E interface{} `json:"e"`
F interface{} `json:"f"`
G interface{} `json:"g"`
H interface{} `json:"h"`
I interface{} `json:"i"`
J interface{} `json:"j"`
}{}
return &v
},
},
{
name: "typed 11 field",
new: func() interface{} {
v := struct {
A interface{} `json:"a"`
B interface{} `json:"b"`
C interface{} `json:"c"`
D interface{} `json:"d"`
E interface{} `json:"e"`
F interface{} `json:"f"`
G interface{} `json:"g"`
H interface{} `json:"h"`
I interface{} `json:"i"`
J interface{} `json:"j"`
K interface{} `json:"k"`
}{}
return &v
},
},
}
for _, tc := range testcases {
t.Run(tc.name, func(t *testing.T) {
for _, target := range targets {
t.Run(target.name, func(t *testing.T) {
err := jsoniter.Unmarshal(tc.data, target.new())
if len(tc.expectError) == 0 {
if err != nil {
t.Errorf("unexpected error: %v", err)
}
} else {
if err == nil {
t.Errorf("expected error, got none")
} else if !strings.Contains(err.Error(), tc.expectError) {
t.Errorf("expected error containing '%s', got: %v", tc.expectError, err)
}
}
})
}
})
}
}
func Test_nested(t *testing.T) {
iter := jsoniter.ParseString(jsoniter.ConfigDefault, `{"hello": [{"world": "value1"}, {"world": "value2"}]}`)
l1 := Level1{}
for l1Field := iter.ReadObject(); l1Field != ""; l1Field = iter.ReadObject() {
switch l1Field {
case "hello":
l2Array := []Level2{}
for iter.ReadArray() {
l2 := Level2{}
for l2Field := iter.ReadObject(); l2Field != ""; l2Field = iter.ReadObject() {
switch l2Field {
case "world":
l2.World = iter.ReadString()
default:
iter.ReportError("bind l2", "unexpected field: "+l2Field)
}
}
l2Array = append(l2Array, l2)
}
l1.Hello = l2Array
default:
iter.ReportError("bind l1", "unexpected field: "+l1Field)
}
}
if !reflect.DeepEqual(l1, Level1{
Hello: []Level2{
{World: "value1"},
{World: "value2"},
},
}) {
t.Fatal(l1)
}
}
func Benchmark_jsoniter_nested(b *testing.B) {
for n := 0; n < b.N; n++ {
iter := jsoniter.ParseString(jsoniter.ConfigDefault, `{"hello": [{"world": "value1"}, {"world": "value2"}]}`)
l1 := Level1{}
for l1Field := iter.ReadObject(); l1Field != ""; l1Field = iter.ReadObject() {
switch l1Field {
case "hello":
l1.Hello = readLevel1Hello(iter)
default:
iter.Skip()
}
}
}
}
func readLevel1Hello(iter *jsoniter.Iterator) []Level2 {
l2Array := make([]Level2, 0, 2)
for iter.ReadArray() {
l2 := Level2{}
for l2Field := iter.ReadObject(); l2Field != ""; l2Field = iter.ReadObject() {
switch l2Field {
case "world":
l2.World = iter.ReadString()
default:
iter.Skip()
}
}
l2Array = append(l2Array, l2)
}
return l2Array
}
func Benchmark_json_nested(b *testing.B) {
for n := 0; n < b.N; n++ {
l1 := Level1{}
json.Unmarshal([]byte(`{"hello": [{"world": "value1"}, {"world": "value2"}]}`), &l1)
}
}
|
