forked from mirror/go-json
293 lines
7.5 KiB
Go
293 lines
7.5 KiB
Go
package json_test
|
|
|
|
import (
|
|
"fmt"
|
|
"reflect"
|
|
"strings"
|
|
"testing"
|
|
|
|
"github.com/goccy/go-json"
|
|
)
|
|
|
|
func Test_Decoder(t *testing.T) {
|
|
t.Run("int", func(t *testing.T) {
|
|
var v int
|
|
assertErr(t, json.Unmarshal([]byte(`-1`), &v))
|
|
assertEq(t, "int", int(-1), v)
|
|
})
|
|
t.Run("int8", func(t *testing.T) {
|
|
var v int8
|
|
assertErr(t, json.Unmarshal([]byte(`-2`), &v))
|
|
assertEq(t, "int8", int8(-2), v)
|
|
})
|
|
t.Run("int16", func(t *testing.T) {
|
|
var v int16
|
|
assertErr(t, json.Unmarshal([]byte(`-3`), &v))
|
|
assertEq(t, "int16", int16(-3), v)
|
|
})
|
|
t.Run("int32", func(t *testing.T) {
|
|
var v int32
|
|
assertErr(t, json.Unmarshal([]byte(`-4`), &v))
|
|
assertEq(t, "int32", int32(-4), v)
|
|
})
|
|
t.Run("int64", func(t *testing.T) {
|
|
var v int64
|
|
assertErr(t, json.Unmarshal([]byte(`-5`), &v))
|
|
assertEq(t, "int64", int64(-5), v)
|
|
})
|
|
t.Run("uint", func(t *testing.T) {
|
|
var v uint
|
|
assertErr(t, json.Unmarshal([]byte(`1`), &v))
|
|
assertEq(t, "uint", uint(1), v)
|
|
})
|
|
t.Run("uint8", func(t *testing.T) {
|
|
var v uint8
|
|
assertErr(t, json.Unmarshal([]byte(`2`), &v))
|
|
assertEq(t, "uint8", uint8(2), v)
|
|
})
|
|
t.Run("uint16", func(t *testing.T) {
|
|
var v uint16
|
|
assertErr(t, json.Unmarshal([]byte(`3`), &v))
|
|
assertEq(t, "uint16", uint16(3), v)
|
|
})
|
|
t.Run("uint32", func(t *testing.T) {
|
|
var v uint32
|
|
assertErr(t, json.Unmarshal([]byte(`4`), &v))
|
|
assertEq(t, "uint32", uint32(4), v)
|
|
})
|
|
t.Run("uint64", func(t *testing.T) {
|
|
var v uint64
|
|
assertErr(t, json.Unmarshal([]byte(`5`), &v))
|
|
assertEq(t, "uint64", uint64(5), v)
|
|
})
|
|
t.Run("bool", func(t *testing.T) {
|
|
t.Run("true", func(t *testing.T) {
|
|
var v bool
|
|
assertErr(t, json.Unmarshal([]byte(`true`), &v))
|
|
assertEq(t, "bool", true, v)
|
|
})
|
|
t.Run("false", func(t *testing.T) {
|
|
v := true
|
|
assertErr(t, json.Unmarshal([]byte(`false`), &v))
|
|
assertEq(t, "bool", false, v)
|
|
})
|
|
})
|
|
t.Run("string", func(t *testing.T) {
|
|
var v string
|
|
assertErr(t, json.Unmarshal([]byte(`"hello"`), &v))
|
|
assertEq(t, "string", "hello", v)
|
|
})
|
|
t.Run("float32", func(t *testing.T) {
|
|
var v float32
|
|
assertErr(t, json.Unmarshal([]byte(`3.14`), &v))
|
|
assertEq(t, "float32", float32(3.14), v)
|
|
})
|
|
t.Run("float64", func(t *testing.T) {
|
|
var v float64
|
|
assertErr(t, json.Unmarshal([]byte(`3.14`), &v))
|
|
assertEq(t, "float64", float64(3.14), v)
|
|
})
|
|
t.Run("slice", func(t *testing.T) {
|
|
var v []int
|
|
assertErr(t, json.Unmarshal([]byte(` [ 1 , 2 , 3 , 4 ] `), &v))
|
|
assertEq(t, "slice", fmt.Sprint([]int{1, 2, 3, 4}), fmt.Sprint(v))
|
|
})
|
|
t.Run("array", func(t *testing.T) {
|
|
var v [4]int
|
|
assertErr(t, json.Unmarshal([]byte(` [ 1 , 2 , 3 , 4 ] `), &v))
|
|
assertEq(t, "array", fmt.Sprint([4]int{1, 2, 3, 4}), fmt.Sprint(v))
|
|
})
|
|
t.Run("map", func(t *testing.T) {
|
|
var v map[string]int
|
|
assertErr(t, json.Unmarshal([]byte(` { "a": 1, "b": 2, "c": 3, "d": 4 } `), &v))
|
|
assertEq(t, "map.a", v["a"], 1)
|
|
assertEq(t, "map.b", v["b"], 2)
|
|
assertEq(t, "map.c", v["c"], 3)
|
|
assertEq(t, "map.d", v["d"], 4)
|
|
})
|
|
t.Run("struct", func(t *testing.T) {
|
|
type T struct {
|
|
AA int `json:"aa"`
|
|
BB string `json:"bb"`
|
|
CC bool `json:"cc"`
|
|
}
|
|
var v struct {
|
|
A int `json:"abcd"`
|
|
B string `json:"str"`
|
|
C bool
|
|
D *T
|
|
}
|
|
content := []byte(`
|
|
{
|
|
"abcd": 123,
|
|
"str" : "hello",
|
|
"c" : true,
|
|
"d" : {
|
|
"aa": 2,
|
|
"bb": "world",
|
|
"cc": true
|
|
}
|
|
}`)
|
|
assertErr(t, json.Unmarshal(content, &v))
|
|
assertEq(t, "struct.A", 123, v.A)
|
|
assertEq(t, "struct.B", "hello", v.B)
|
|
assertEq(t, "struct.C", true, v.C)
|
|
assertEq(t, "struct.D.AA", 2, v.D.AA)
|
|
assertEq(t, "struct.D.BB", "world", v.D.BB)
|
|
assertEq(t, "struct.D.CC", true, v.D.CC)
|
|
t.Run("struct.null", func(t *testing.T) {
|
|
var v struct {
|
|
A string
|
|
}
|
|
assertErr(t, json.Unmarshal([]byte(`{"a":null}`), &v))
|
|
assertEq(t, "string is null", v.A, "")
|
|
})
|
|
})
|
|
t.Run("interface", func(t *testing.T) {
|
|
t.Run("number", func(t *testing.T) {
|
|
var v interface{}
|
|
assertErr(t, json.Unmarshal([]byte(`10`), &v))
|
|
assertEq(t, "interface.kind", "float64", reflect.TypeOf(v).Kind().String())
|
|
assertEq(t, "interface", `10`, fmt.Sprint(v))
|
|
})
|
|
t.Run("string", func(t *testing.T) {
|
|
var v interface{}
|
|
assertErr(t, json.Unmarshal([]byte(`"hello"`), &v))
|
|
assertEq(t, "interface.kind", "string", reflect.TypeOf(v).Kind().String())
|
|
assertEq(t, "interface", `hello`, fmt.Sprint(v))
|
|
})
|
|
t.Run("bool", func(t *testing.T) {
|
|
var v interface{}
|
|
assertErr(t, json.Unmarshal([]byte(`true`), &v))
|
|
assertEq(t, "interface.kind", "bool", reflect.TypeOf(v).Kind().String())
|
|
assertEq(t, "interface", `true`, fmt.Sprint(v))
|
|
})
|
|
t.Run("slice", func(t *testing.T) {
|
|
var v interface{}
|
|
assertErr(t, json.Unmarshal([]byte(`[1,2,3,4]`), &v))
|
|
assertEq(t, "interface.kind", "slice", reflect.TypeOf(v).Kind().String())
|
|
assertEq(t, "interface", `[1 2 3 4]`, fmt.Sprint(v))
|
|
})
|
|
t.Run("map", func(t *testing.T) {
|
|
var v interface{}
|
|
assertErr(t, json.Unmarshal([]byte(`{"a": 1, "b": "c"}`), &v))
|
|
assertEq(t, "interface.kind", "map", reflect.TypeOf(v).Kind().String())
|
|
m := v.(map[interface{}]interface{})
|
|
assertEq(t, "interface", `1`, fmt.Sprint(m["a"]))
|
|
assertEq(t, "interface", `c`, fmt.Sprint(m["b"]))
|
|
})
|
|
t.Run("null", func(t *testing.T) {
|
|
var v interface{}
|
|
v = 1
|
|
assertErr(t, json.Unmarshal([]byte(`null`), &v))
|
|
assertEq(t, "interface", nil, v)
|
|
})
|
|
})
|
|
}
|
|
|
|
type unmarshalJSON struct {
|
|
v int
|
|
}
|
|
|
|
func (u *unmarshalJSON) UnmarshalJSON(b []byte) error {
|
|
var v int
|
|
if err := json.Unmarshal(b, &v); err != nil {
|
|
return err
|
|
}
|
|
u.v = v
|
|
return nil
|
|
}
|
|
|
|
func Test_UnmarshalJSON(t *testing.T) {
|
|
t.Run("*struct", func(t *testing.T) {
|
|
var v unmarshalJSON
|
|
assertErr(t, json.Unmarshal([]byte(`10`), &v))
|
|
assertEq(t, "unmarshal", v.v, 10)
|
|
})
|
|
}
|
|
|
|
type unmarshalText struct {
|
|
v int
|
|
}
|
|
|
|
func (u *unmarshalText) UnmarshalText(b []byte) error {
|
|
var v int
|
|
if err := json.Unmarshal(b, &v); err != nil {
|
|
return err
|
|
}
|
|
u.v = v
|
|
return nil
|
|
}
|
|
|
|
func Test_UnmarshalText(t *testing.T) {
|
|
t.Run("*struct", func(t *testing.T) {
|
|
var v unmarshalText
|
|
assertErr(t, json.Unmarshal([]byte(`11`), &v))
|
|
assertEq(t, "unmarshal", v.v, 11)
|
|
})
|
|
}
|
|
|
|
func Test_InvalidUnmarshalError(t *testing.T) {
|
|
t.Run("nil", func(t *testing.T) {
|
|
var v *struct{}
|
|
err := fmt.Sprint(json.Unmarshal([]byte(`{}`), v))
|
|
assertEq(t, "invalid unmarshal error", "json: Unmarshal(nil *struct {})", err)
|
|
})
|
|
t.Run("non pointer", func(t *testing.T) {
|
|
var v int
|
|
err := fmt.Sprint(json.Unmarshal([]byte(`{}`), v))
|
|
assertEq(t, "invalid unmarshal error", "json: Unmarshal(non-pointer int)", err)
|
|
})
|
|
}
|
|
|
|
func Test_Token(t *testing.T) {
|
|
dec := json.NewDecoder(strings.NewReader(`{"a": 1, "b": true, "c": [1, "two", null]}`))
|
|
cnt := 0
|
|
for {
|
|
if _, err := dec.Token(); err != nil {
|
|
break
|
|
}
|
|
cnt++
|
|
}
|
|
if cnt != 12 {
|
|
t.Fatal("failed to parse token")
|
|
}
|
|
}
|
|
|
|
func Test_DecodeStream(t *testing.T) {
|
|
const stream = `
|
|
[
|
|
{"Name": "Ed", "Text": "Knock knock."},
|
|
{"Name": "Sam", "Text": "Who's there?"},
|
|
{"Name": "Ed", "Text": "Go fmt."},
|
|
{"Name": "Sam", "Text": "Go fmt who?"},
|
|
{"Name": "Ed", "Text": "Go fmt yourself!"}
|
|
]
|
|
`
|
|
type Message struct {
|
|
Name, Text string
|
|
}
|
|
dec := json.NewDecoder(strings.NewReader(stream))
|
|
|
|
tk, err := dec.Token()
|
|
assertErr(t, err)
|
|
assertEq(t, "[", fmt.Sprint(tk), "[")
|
|
|
|
elem := 0
|
|
// while the array contains values
|
|
for dec.More() {
|
|
var m Message
|
|
// decode an array value (Message)
|
|
assertErr(t, dec.Decode(&m))
|
|
if m.Name == "" || m.Text == "" {
|
|
t.Fatal("failed to assign value to struct field")
|
|
}
|
|
elem++
|
|
}
|
|
assertEq(t, "decode count", elem, 5)
|
|
|
|
tk, err = dec.Token()
|
|
assertErr(t, err)
|
|
assertEq(t, "]", fmt.Sprint(tk), "]")
|
|
}
|