mirror of
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synced 2025-12-08 06:10:04 +00:00
107ebb1781
This reverts golang.org/cl/179337. Reason for revert: broke a few too many reasonably valid Go programs. The previous behavior was perhaps less consistent, but the docs were never very clear about when the decoder merges with existing values, versus replacing existing values altogether. Fixes #39149. Change-Id: I1c1d857709b8398969fe421aa962f6b62f91763a Reviewed-on: https://go-review.googlesource.com/c/go/+/234559 Run-TryBot: Daniel Martí <mvdan@mvdan.cc> TryBot-Result: Gobot Gobot <gobot@golang.org> Reviewed-by: Andrew Bonventre <andybons@golang.org>
2571 lines
62 KiB
Go
2571 lines
62 KiB
Go
// Copyright 2010 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package json
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import (
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"bytes"
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"encoding"
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"errors"
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"fmt"
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"image"
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"math"
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"math/big"
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"net"
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"reflect"
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"strconv"
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"strings"
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"testing"
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"time"
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)
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type T struct {
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X string
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Y int
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Z int `json:"-"`
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}
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type U struct {
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Alphabet string `json:"alpha"`
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}
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type V struct {
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F1 interface{}
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F2 int32
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F3 Number
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F4 *VOuter
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}
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type VOuter struct {
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V V
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}
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type W struct {
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S SS
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}
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type P struct {
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PP PP
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}
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type PP struct {
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T T
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Ts []T
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}
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type SS string
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func (*SS) UnmarshalJSON(data []byte) error {
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return &UnmarshalTypeError{Value: "number", Type: reflect.TypeOf(SS(""))}
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}
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// ifaceNumAsFloat64/ifaceNumAsNumber are used to test unmarshaling with and
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// without UseNumber
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var ifaceNumAsFloat64 = map[string]interface{}{
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"k1": float64(1),
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"k2": "s",
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"k3": []interface{}{float64(1), float64(2.0), float64(3e-3)},
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"k4": map[string]interface{}{"kk1": "s", "kk2": float64(2)},
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}
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var ifaceNumAsNumber = map[string]interface{}{
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"k1": Number("1"),
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"k2": "s",
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"k3": []interface{}{Number("1"), Number("2.0"), Number("3e-3")},
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"k4": map[string]interface{}{"kk1": "s", "kk2": Number("2")},
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}
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type tx struct {
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x int
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}
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type u8 uint8
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// A type that can unmarshal itself.
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type unmarshaler struct {
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T bool
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}
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func (u *unmarshaler) UnmarshalJSON(b []byte) error {
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*u = unmarshaler{true} // All we need to see that UnmarshalJSON is called.
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return nil
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}
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type ustruct struct {
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M unmarshaler
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}
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type unmarshalerText struct {
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A, B string
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}
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// needed for re-marshaling tests
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func (u unmarshalerText) MarshalText() ([]byte, error) {
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return []byte(u.A + ":" + u.B), nil
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}
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func (u *unmarshalerText) UnmarshalText(b []byte) error {
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pos := bytes.IndexByte(b, ':')
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if pos == -1 {
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return errors.New("missing separator")
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}
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u.A, u.B = string(b[:pos]), string(b[pos+1:])
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return nil
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}
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var _ encoding.TextUnmarshaler = (*unmarshalerText)(nil)
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type ustructText struct {
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M unmarshalerText
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}
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// u8marshal is an integer type that can marshal/unmarshal itself.
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type u8marshal uint8
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func (u8 u8marshal) MarshalText() ([]byte, error) {
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return []byte(fmt.Sprintf("u%d", u8)), nil
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}
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var errMissingU8Prefix = errors.New("missing 'u' prefix")
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func (u8 *u8marshal) UnmarshalText(b []byte) error {
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if !bytes.HasPrefix(b, []byte{'u'}) {
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return errMissingU8Prefix
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}
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n, err := strconv.Atoi(string(b[1:]))
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if err != nil {
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return err
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}
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*u8 = u8marshal(n)
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return nil
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}
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var _ encoding.TextUnmarshaler = (*u8marshal)(nil)
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var (
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umtrue = unmarshaler{true}
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umslice = []unmarshaler{{true}}
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umstruct = ustruct{unmarshaler{true}}
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umtrueXY = unmarshalerText{"x", "y"}
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umsliceXY = []unmarshalerText{{"x", "y"}}
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umstructXY = ustructText{unmarshalerText{"x", "y"}}
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ummapXY = map[unmarshalerText]bool{{"x", "y"}: true}
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)
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// Test data structures for anonymous fields.
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type Point struct {
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Z int
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}
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type Top struct {
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Level0 int
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Embed0
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*Embed0a
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*Embed0b `json:"e,omitempty"` // treated as named
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Embed0c `json:"-"` // ignored
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Loop
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Embed0p // has Point with X, Y, used
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Embed0q // has Point with Z, used
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embed // contains exported field
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}
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type Embed0 struct {
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Level1a int // overridden by Embed0a's Level1a with json tag
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Level1b int // used because Embed0a's Level1b is renamed
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Level1c int // used because Embed0a's Level1c is ignored
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Level1d int // annihilated by Embed0a's Level1d
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Level1e int `json:"x"` // annihilated by Embed0a.Level1e
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}
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type Embed0a struct {
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Level1a int `json:"Level1a,omitempty"`
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Level1b int `json:"LEVEL1B,omitempty"`
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Level1c int `json:"-"`
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Level1d int // annihilated by Embed0's Level1d
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Level1f int `json:"x"` // annihilated by Embed0's Level1e
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}
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type Embed0b Embed0
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type Embed0c Embed0
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type Embed0p struct {
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image.Point
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}
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type Embed0q struct {
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Point
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}
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type embed struct {
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Q int
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}
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type Loop struct {
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Loop1 int `json:",omitempty"`
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Loop2 int `json:",omitempty"`
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*Loop
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}
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// From reflect test:
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// The X in S6 and S7 annihilate, but they also block the X in S8.S9.
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type S5 struct {
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S6
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S7
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S8
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}
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type S6 struct {
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X int
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}
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type S7 S6
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type S8 struct {
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S9
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}
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type S9 struct {
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X int
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Y int
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}
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// From reflect test:
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// The X in S11.S6 and S12.S6 annihilate, but they also block the X in S13.S8.S9.
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type S10 struct {
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S11
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S12
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S13
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}
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type S11 struct {
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S6
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}
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type S12 struct {
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S6
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}
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type S13 struct {
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S8
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}
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type Ambig struct {
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// Given "hello", the first match should win.
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First int `json:"HELLO"`
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Second int `json:"Hello"`
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}
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type XYZ struct {
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X interface{}
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Y interface{}
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Z interface{}
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}
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type unexportedWithMethods struct{}
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func (unexportedWithMethods) F() {}
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type byteWithMarshalJSON byte
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func (b byteWithMarshalJSON) MarshalJSON() ([]byte, error) {
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return []byte(fmt.Sprintf(`"Z%.2x"`, byte(b))), nil
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}
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func (b *byteWithMarshalJSON) UnmarshalJSON(data []byte) error {
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if len(data) != 5 || data[0] != '"' || data[1] != 'Z' || data[4] != '"' {
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return fmt.Errorf("bad quoted string")
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}
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i, err := strconv.ParseInt(string(data[2:4]), 16, 8)
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if err != nil {
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return fmt.Errorf("bad hex")
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}
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*b = byteWithMarshalJSON(i)
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return nil
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}
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type byteWithPtrMarshalJSON byte
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func (b *byteWithPtrMarshalJSON) MarshalJSON() ([]byte, error) {
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return byteWithMarshalJSON(*b).MarshalJSON()
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}
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func (b *byteWithPtrMarshalJSON) UnmarshalJSON(data []byte) error {
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return (*byteWithMarshalJSON)(b).UnmarshalJSON(data)
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}
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type byteWithMarshalText byte
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func (b byteWithMarshalText) MarshalText() ([]byte, error) {
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return []byte(fmt.Sprintf(`Z%.2x`, byte(b))), nil
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}
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func (b *byteWithMarshalText) UnmarshalText(data []byte) error {
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if len(data) != 3 || data[0] != 'Z' {
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return fmt.Errorf("bad quoted string")
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}
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i, err := strconv.ParseInt(string(data[1:3]), 16, 8)
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if err != nil {
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return fmt.Errorf("bad hex")
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}
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*b = byteWithMarshalText(i)
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return nil
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}
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type byteWithPtrMarshalText byte
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func (b *byteWithPtrMarshalText) MarshalText() ([]byte, error) {
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return byteWithMarshalText(*b).MarshalText()
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}
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func (b *byteWithPtrMarshalText) UnmarshalText(data []byte) error {
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return (*byteWithMarshalText)(b).UnmarshalText(data)
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}
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type intWithMarshalJSON int
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func (b intWithMarshalJSON) MarshalJSON() ([]byte, error) {
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return []byte(fmt.Sprintf(`"Z%.2x"`, int(b))), nil
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}
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func (b *intWithMarshalJSON) UnmarshalJSON(data []byte) error {
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if len(data) != 5 || data[0] != '"' || data[1] != 'Z' || data[4] != '"' {
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return fmt.Errorf("bad quoted string")
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}
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i, err := strconv.ParseInt(string(data[2:4]), 16, 8)
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if err != nil {
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return fmt.Errorf("bad hex")
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}
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*b = intWithMarshalJSON(i)
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return nil
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}
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type intWithPtrMarshalJSON int
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func (b *intWithPtrMarshalJSON) MarshalJSON() ([]byte, error) {
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return intWithMarshalJSON(*b).MarshalJSON()
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}
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func (b *intWithPtrMarshalJSON) UnmarshalJSON(data []byte) error {
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return (*intWithMarshalJSON)(b).UnmarshalJSON(data)
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}
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type intWithMarshalText int
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func (b intWithMarshalText) MarshalText() ([]byte, error) {
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return []byte(fmt.Sprintf(`Z%.2x`, int(b))), nil
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}
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func (b *intWithMarshalText) UnmarshalText(data []byte) error {
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if len(data) != 3 || data[0] != 'Z' {
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return fmt.Errorf("bad quoted string")
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}
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i, err := strconv.ParseInt(string(data[1:3]), 16, 8)
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if err != nil {
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return fmt.Errorf("bad hex")
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}
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*b = intWithMarshalText(i)
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return nil
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}
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type intWithPtrMarshalText int
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func (b *intWithPtrMarshalText) MarshalText() ([]byte, error) {
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return intWithMarshalText(*b).MarshalText()
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}
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func (b *intWithPtrMarshalText) UnmarshalText(data []byte) error {
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return (*intWithMarshalText)(b).UnmarshalText(data)
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}
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type mapStringToStringData struct {
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Data map[string]string `json:"data"`
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}
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type unmarshalTest struct {
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in string
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ptr interface{} // new(type)
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out interface{}
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err error
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useNumber bool
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golden bool
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disallowUnknownFields bool
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}
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type B struct {
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B bool `json:",string"`
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}
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type DoublePtr struct {
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I **int
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J **int
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}
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var unmarshalTests = []unmarshalTest{
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// basic types
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{in: `true`, ptr: new(bool), out: true},
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{in: `1`, ptr: new(int), out: 1},
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{in: `1.2`, ptr: new(float64), out: 1.2},
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{in: `-5`, ptr: new(int16), out: int16(-5)},
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{in: `2`, ptr: new(Number), out: Number("2"), useNumber: true},
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{in: `2`, ptr: new(Number), out: Number("2")},
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{in: `2`, ptr: new(interface{}), out: float64(2.0)},
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{in: `2`, ptr: new(interface{}), out: Number("2"), useNumber: true},
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{in: `"a\u1234"`, ptr: new(string), out: "a\u1234"},
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{in: `"http:\/\/"`, ptr: new(string), out: "http://"},
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{in: `"g-clef: \uD834\uDD1E"`, ptr: new(string), out: "g-clef: \U0001D11E"},
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{in: `"invalid: \uD834x\uDD1E"`, ptr: new(string), out: "invalid: \uFFFDx\uFFFD"},
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{in: "null", ptr: new(interface{}), out: nil},
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{in: `{"X": [1,2,3], "Y": 4}`, ptr: new(T), out: T{Y: 4}, err: &UnmarshalTypeError{"array", reflect.TypeOf(""), 7, "T", "X"}},
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{in: `{"X": 23}`, ptr: new(T), out: T{}, err: &UnmarshalTypeError{"number", reflect.TypeOf(""), 8, "T", "X"}}, {in: `{"x": 1}`, ptr: new(tx), out: tx{}},
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{in: `{"x": 1}`, ptr: new(tx), out: tx{}},
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{in: `{"x": 1}`, ptr: new(tx), err: fmt.Errorf("json: unknown field \"x\""), disallowUnknownFields: true},
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{in: `{"S": 23}`, ptr: new(W), out: W{}, err: &UnmarshalTypeError{"number", reflect.TypeOf(SS("")), 0, "W", "S"}},
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{in: `{"F1":1,"F2":2,"F3":3}`, ptr: new(V), out: V{F1: float64(1), F2: int32(2), F3: Number("3")}},
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{in: `{"F1":1,"F2":2,"F3":3}`, ptr: new(V), out: V{F1: Number("1"), F2: int32(2), F3: Number("3")}, useNumber: true},
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{in: `{"k1":1,"k2":"s","k3":[1,2.0,3e-3],"k4":{"kk1":"s","kk2":2}}`, ptr: new(interface{}), out: ifaceNumAsFloat64},
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{in: `{"k1":1,"k2":"s","k3":[1,2.0,3e-3],"k4":{"kk1":"s","kk2":2}}`, ptr: new(interface{}), out: ifaceNumAsNumber, useNumber: true},
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// raw values with whitespace
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{in: "\n true ", ptr: new(bool), out: true},
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{in: "\t 1 ", ptr: new(int), out: 1},
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{in: "\r 1.2 ", ptr: new(float64), out: 1.2},
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{in: "\t -5 \n", ptr: new(int16), out: int16(-5)},
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{in: "\t \"a\\u1234\" \n", ptr: new(string), out: "a\u1234"},
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// Z has a "-" tag.
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{in: `{"Y": 1, "Z": 2}`, ptr: new(T), out: T{Y: 1}},
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{in: `{"Y": 1, "Z": 2}`, ptr: new(T), err: fmt.Errorf("json: unknown field \"Z\""), disallowUnknownFields: true},
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{in: `{"alpha": "abc", "alphabet": "xyz"}`, ptr: new(U), out: U{Alphabet: "abc"}},
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{in: `{"alpha": "abc", "alphabet": "xyz"}`, ptr: new(U), err: fmt.Errorf("json: unknown field \"alphabet\""), disallowUnknownFields: true},
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{in: `{"alpha": "abc"}`, ptr: new(U), out: U{Alphabet: "abc"}},
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{in: `{"alphabet": "xyz"}`, ptr: new(U), out: U{}},
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{in: `{"alphabet": "xyz"}`, ptr: new(U), err: fmt.Errorf("json: unknown field \"alphabet\""), disallowUnknownFields: true},
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// syntax errors
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{in: `{"X": "foo", "Y"}`, err: &SyntaxError{"invalid character '}' after object key", 17}},
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{in: `[1, 2, 3+]`, err: &SyntaxError{"invalid character '+' after array element", 9}},
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{in: `{"X":12x}`, err: &SyntaxError{"invalid character 'x' after object key:value pair", 8}, useNumber: true},
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{in: `[2, 3`, err: &SyntaxError{msg: "unexpected end of JSON input", Offset: 5}},
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{in: `{"F3": -}`, ptr: new(V), out: V{F3: Number("-")}, err: &SyntaxError{msg: "invalid character '}' in numeric literal", Offset: 9}},
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// raw value errors
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{in: "\x01 42", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}},
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{in: " 42 \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 5}},
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{in: "\x01 true", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}},
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{in: " false \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 8}},
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{in: "\x01 1.2", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}},
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{in: " 3.4 \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 6}},
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{in: "\x01 \"string\"", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}},
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{in: " \"string\" \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 11}},
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// array tests
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{in: `[1, 2, 3]`, ptr: new([3]int), out: [3]int{1, 2, 3}},
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{in: `[1, 2, 3]`, ptr: new([1]int), out: [1]int{1}},
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{in: `[1, 2, 3]`, ptr: new([5]int), out: [5]int{1, 2, 3, 0, 0}},
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{in: `[1, 2, 3]`, ptr: new(MustNotUnmarshalJSON), err: errors.New("MustNotUnmarshalJSON was used")},
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// empty array to interface test
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{in: `[]`, ptr: new([]interface{}), out: []interface{}{}},
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{in: `null`, ptr: new([]interface{}), out: []interface{}(nil)},
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{in: `{"T":[]}`, ptr: new(map[string]interface{}), out: map[string]interface{}{"T": []interface{}{}}},
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{in: `{"T":null}`, ptr: new(map[string]interface{}), out: map[string]interface{}{"T": interface{}(nil)}},
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// composite tests
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{in: allValueIndent, ptr: new(All), out: allValue},
|
|
{in: allValueCompact, ptr: new(All), out: allValue},
|
|
{in: allValueIndent, ptr: new(*All), out: &allValue},
|
|
{in: allValueCompact, ptr: new(*All), out: &allValue},
|
|
{in: pallValueIndent, ptr: new(All), out: pallValue},
|
|
{in: pallValueCompact, ptr: new(All), out: pallValue},
|
|
{in: pallValueIndent, ptr: new(*All), out: &pallValue},
|
|
{in: pallValueCompact, ptr: new(*All), out: &pallValue},
|
|
|
|
// unmarshal interface test
|
|
{in: `{"T":false}`, ptr: new(unmarshaler), out: umtrue}, // use "false" so test will fail if custom unmarshaler is not called
|
|
{in: `{"T":false}`, ptr: new(*unmarshaler), out: &umtrue},
|
|
{in: `[{"T":false}]`, ptr: new([]unmarshaler), out: umslice},
|
|
{in: `[{"T":false}]`, ptr: new(*[]unmarshaler), out: &umslice},
|
|
{in: `{"M":{"T":"x:y"}}`, ptr: new(ustruct), out: umstruct},
|
|
|
|
// UnmarshalText interface test
|
|
{in: `"x:y"`, ptr: new(unmarshalerText), out: umtrueXY},
|
|
{in: `"x:y"`, ptr: new(*unmarshalerText), out: &umtrueXY},
|
|
{in: `["x:y"]`, ptr: new([]unmarshalerText), out: umsliceXY},
|
|
{in: `["x:y"]`, ptr: new(*[]unmarshalerText), out: &umsliceXY},
|
|
{in: `{"M":"x:y"}`, ptr: new(ustructText), out: umstructXY},
|
|
|
|
// integer-keyed map test
|
|
{
|
|
in: `{"-1":"a","0":"b","1":"c"}`,
|
|
ptr: new(map[int]string),
|
|
out: map[int]string{-1: "a", 0: "b", 1: "c"},
|
|
},
|
|
{
|
|
in: `{"0":"a","10":"c","9":"b"}`,
|
|
ptr: new(map[u8]string),
|
|
out: map[u8]string{0: "a", 9: "b", 10: "c"},
|
|
},
|
|
{
|
|
in: `{"-9223372036854775808":"min","9223372036854775807":"max"}`,
|
|
ptr: new(map[int64]string),
|
|
out: map[int64]string{math.MinInt64: "min", math.MaxInt64: "max"},
|
|
},
|
|
{
|
|
in: `{"18446744073709551615":"max"}`,
|
|
ptr: new(map[uint64]string),
|
|
out: map[uint64]string{math.MaxUint64: "max"},
|
|
},
|
|
{
|
|
in: `{"0":false,"10":true}`,
|
|
ptr: new(map[uintptr]bool),
|
|
out: map[uintptr]bool{0: false, 10: true},
|
|
},
|
|
|
|
// Check that MarshalText and UnmarshalText take precedence
|
|
// over default integer handling in map keys.
|
|
{
|
|
in: `{"u2":4}`,
|
|
ptr: new(map[u8marshal]int),
|
|
out: map[u8marshal]int{2: 4},
|
|
},
|
|
{
|
|
in: `{"2":4}`,
|
|
ptr: new(map[u8marshal]int),
|
|
err: errMissingU8Prefix,
|
|
},
|
|
|
|
// integer-keyed map errors
|
|
{
|
|
in: `{"abc":"abc"}`,
|
|
ptr: new(map[int]string),
|
|
err: &UnmarshalTypeError{Value: "number abc", Type: reflect.TypeOf(0), Offset: 2},
|
|
},
|
|
{
|
|
in: `{"256":"abc"}`,
|
|
ptr: new(map[uint8]string),
|
|
err: &UnmarshalTypeError{Value: "number 256", Type: reflect.TypeOf(uint8(0)), Offset: 2},
|
|
},
|
|
{
|
|
in: `{"128":"abc"}`,
|
|
ptr: new(map[int8]string),
|
|
err: &UnmarshalTypeError{Value: "number 128", Type: reflect.TypeOf(int8(0)), Offset: 2},
|
|
},
|
|
{
|
|
in: `{"-1":"abc"}`,
|
|
ptr: new(map[uint8]string),
|
|
err: &UnmarshalTypeError{Value: "number -1", Type: reflect.TypeOf(uint8(0)), Offset: 2},
|
|
},
|
|
{
|
|
in: `{"F":{"a":2,"3":4}}`,
|
|
ptr: new(map[string]map[int]int),
|
|
err: &UnmarshalTypeError{Value: "number a", Type: reflect.TypeOf(int(0)), Offset: 7},
|
|
},
|
|
{
|
|
in: `{"F":{"a":2,"3":4}}`,
|
|
ptr: new(map[string]map[uint]int),
|
|
err: &UnmarshalTypeError{Value: "number a", Type: reflect.TypeOf(uint(0)), Offset: 7},
|
|
},
|
|
|
|
// Map keys can be encoding.TextUnmarshalers.
|
|
{in: `{"x:y":true}`, ptr: new(map[unmarshalerText]bool), out: ummapXY},
|
|
// If multiple values for the same key exists, only the most recent value is used.
|
|
{in: `{"x:y":false,"x:y":true}`, ptr: new(map[unmarshalerText]bool), out: ummapXY},
|
|
|
|
{
|
|
in: `{
|
|
"Level0": 1,
|
|
"Level1b": 2,
|
|
"Level1c": 3,
|
|
"x": 4,
|
|
"Level1a": 5,
|
|
"LEVEL1B": 6,
|
|
"e": {
|
|
"Level1a": 8,
|
|
"Level1b": 9,
|
|
"Level1c": 10,
|
|
"Level1d": 11,
|
|
"x": 12
|
|
},
|
|
"Loop1": 13,
|
|
"Loop2": 14,
|
|
"X": 15,
|
|
"Y": 16,
|
|
"Z": 17,
|
|
"Q": 18
|
|
}`,
|
|
ptr: new(Top),
|
|
out: Top{
|
|
Level0: 1,
|
|
Embed0: Embed0{
|
|
Level1b: 2,
|
|
Level1c: 3,
|
|
},
|
|
Embed0a: &Embed0a{
|
|
Level1a: 5,
|
|
Level1b: 6,
|
|
},
|
|
Embed0b: &Embed0b{
|
|
Level1a: 8,
|
|
Level1b: 9,
|
|
Level1c: 10,
|
|
Level1d: 11,
|
|
Level1e: 12,
|
|
},
|
|
Loop: Loop{
|
|
Loop1: 13,
|
|
Loop2: 14,
|
|
},
|
|
Embed0p: Embed0p{
|
|
Point: image.Point{X: 15, Y: 16},
|
|
},
|
|
Embed0q: Embed0q{
|
|
Point: Point{Z: 17},
|
|
},
|
|
embed: embed{
|
|
Q: 18,
|
|
},
|
|
},
|
|
},
|
|
{
|
|
in: `{"hello": 1}`,
|
|
ptr: new(Ambig),
|
|
out: Ambig{First: 1},
|
|
},
|
|
|
|
{
|
|
in: `{"X": 1,"Y":2}`,
|
|
ptr: new(S5),
|
|
out: S5{S8: S8{S9: S9{Y: 2}}},
|
|
},
|
|
{
|
|
in: `{"X": 1,"Y":2}`,
|
|
ptr: new(S5),
|
|
err: fmt.Errorf("json: unknown field \"X\""),
|
|
disallowUnknownFields: true,
|
|
},
|
|
{
|
|
in: `{"X": 1,"Y":2}`,
|
|
ptr: new(S10),
|
|
out: S10{S13: S13{S8: S8{S9: S9{Y: 2}}}},
|
|
},
|
|
{
|
|
in: `{"X": 1,"Y":2}`,
|
|
ptr: new(S10),
|
|
err: fmt.Errorf("json: unknown field \"X\""),
|
|
disallowUnknownFields: true,
|
|
},
|
|
{
|
|
in: `{"I": 0, "I": null, "J": null}`,
|
|
ptr: new(DoublePtr),
|
|
out: DoublePtr{I: nil, J: nil},
|
|
},
|
|
|
|
// invalid UTF-8 is coerced to valid UTF-8.
|
|
{
|
|
in: "\"hello\xffworld\"",
|
|
ptr: new(string),
|
|
out: "hello\ufffdworld",
|
|
},
|
|
{
|
|
in: "\"hello\xc2\xc2world\"",
|
|
ptr: new(string),
|
|
out: "hello\ufffd\ufffdworld",
|
|
},
|
|
{
|
|
in: "\"hello\xc2\xffworld\"",
|
|
ptr: new(string),
|
|
out: "hello\ufffd\ufffdworld",
|
|
},
|
|
{
|
|
in: "\"hello\\ud800world\"",
|
|
ptr: new(string),
|
|
out: "hello\ufffdworld",
|
|
},
|
|
{
|
|
in: "\"hello\\ud800\\ud800world\"",
|
|
ptr: new(string),
|
|
out: "hello\ufffd\ufffdworld",
|
|
},
|
|
{
|
|
in: "\"hello\\ud800\\ud800world\"",
|
|
ptr: new(string),
|
|
out: "hello\ufffd\ufffdworld",
|
|
},
|
|
{
|
|
in: "\"hello\xed\xa0\x80\xed\xb0\x80world\"",
|
|
ptr: new(string),
|
|
out: "hello\ufffd\ufffd\ufffd\ufffd\ufffd\ufffdworld",
|
|
},
|
|
|
|
// Used to be issue 8305, but time.Time implements encoding.TextUnmarshaler so this works now.
|
|
{
|
|
in: `{"2009-11-10T23:00:00Z": "hello world"}`,
|
|
ptr: new(map[time.Time]string),
|
|
out: map[time.Time]string{time.Date(2009, 11, 10, 23, 0, 0, 0, time.UTC): "hello world"},
|
|
},
|
|
|
|
// issue 8305
|
|
{
|
|
in: `{"2009-11-10T23:00:00Z": "hello world"}`,
|
|
ptr: new(map[Point]string),
|
|
err: &UnmarshalTypeError{Value: "object", Type: reflect.TypeOf(map[Point]string{}), Offset: 1},
|
|
},
|
|
{
|
|
in: `{"asdf": "hello world"}`,
|
|
ptr: new(map[unmarshaler]string),
|
|
err: &UnmarshalTypeError{Value: "object", Type: reflect.TypeOf(map[unmarshaler]string{}), Offset: 1},
|
|
},
|
|
|
|
// related to issue 13783.
|
|
// Go 1.7 changed marshaling a slice of typed byte to use the methods on the byte type,
|
|
// similar to marshaling a slice of typed int.
|
|
// These tests check that, assuming the byte type also has valid decoding methods,
|
|
// either the old base64 string encoding or the new per-element encoding can be
|
|
// successfully unmarshaled. The custom unmarshalers were accessible in earlier
|
|
// versions of Go, even though the custom marshaler was not.
|
|
{
|
|
in: `"AQID"`,
|
|
ptr: new([]byteWithMarshalJSON),
|
|
out: []byteWithMarshalJSON{1, 2, 3},
|
|
},
|
|
{
|
|
in: `["Z01","Z02","Z03"]`,
|
|
ptr: new([]byteWithMarshalJSON),
|
|
out: []byteWithMarshalJSON{1, 2, 3},
|
|
golden: true,
|
|
},
|
|
{
|
|
in: `"AQID"`,
|
|
ptr: new([]byteWithMarshalText),
|
|
out: []byteWithMarshalText{1, 2, 3},
|
|
},
|
|
{
|
|
in: `["Z01","Z02","Z03"]`,
|
|
ptr: new([]byteWithMarshalText),
|
|
out: []byteWithMarshalText{1, 2, 3},
|
|
golden: true,
|
|
},
|
|
{
|
|
in: `"AQID"`,
|
|
ptr: new([]byteWithPtrMarshalJSON),
|
|
out: []byteWithPtrMarshalJSON{1, 2, 3},
|
|
},
|
|
{
|
|
in: `["Z01","Z02","Z03"]`,
|
|
ptr: new([]byteWithPtrMarshalJSON),
|
|
out: []byteWithPtrMarshalJSON{1, 2, 3},
|
|
golden: true,
|
|
},
|
|
{
|
|
in: `"AQID"`,
|
|
ptr: new([]byteWithPtrMarshalText),
|
|
out: []byteWithPtrMarshalText{1, 2, 3},
|
|
},
|
|
{
|
|
in: `["Z01","Z02","Z03"]`,
|
|
ptr: new([]byteWithPtrMarshalText),
|
|
out: []byteWithPtrMarshalText{1, 2, 3},
|
|
golden: true,
|
|
},
|
|
|
|
// ints work with the marshaler but not the base64 []byte case
|
|
{
|
|
in: `["Z01","Z02","Z03"]`,
|
|
ptr: new([]intWithMarshalJSON),
|
|
out: []intWithMarshalJSON{1, 2, 3},
|
|
golden: true,
|
|
},
|
|
{
|
|
in: `["Z01","Z02","Z03"]`,
|
|
ptr: new([]intWithMarshalText),
|
|
out: []intWithMarshalText{1, 2, 3},
|
|
golden: true,
|
|
},
|
|
{
|
|
in: `["Z01","Z02","Z03"]`,
|
|
ptr: new([]intWithPtrMarshalJSON),
|
|
out: []intWithPtrMarshalJSON{1, 2, 3},
|
|
golden: true,
|
|
},
|
|
{
|
|
in: `["Z01","Z02","Z03"]`,
|
|
ptr: new([]intWithPtrMarshalText),
|
|
out: []intWithPtrMarshalText{1, 2, 3},
|
|
golden: true,
|
|
},
|
|
|
|
{in: `0.000001`, ptr: new(float64), out: 0.000001, golden: true},
|
|
{in: `1e-7`, ptr: new(float64), out: 1e-7, golden: true},
|
|
{in: `100000000000000000000`, ptr: new(float64), out: 100000000000000000000.0, golden: true},
|
|
{in: `1e+21`, ptr: new(float64), out: 1e21, golden: true},
|
|
{in: `-0.000001`, ptr: new(float64), out: -0.000001, golden: true},
|
|
{in: `-1e-7`, ptr: new(float64), out: -1e-7, golden: true},
|
|
{in: `-100000000000000000000`, ptr: new(float64), out: -100000000000000000000.0, golden: true},
|
|
{in: `-1e+21`, ptr: new(float64), out: -1e21, golden: true},
|
|
{in: `999999999999999900000`, ptr: new(float64), out: 999999999999999900000.0, golden: true},
|
|
{in: `9007199254740992`, ptr: new(float64), out: 9007199254740992.0, golden: true},
|
|
{in: `9007199254740993`, ptr: new(float64), out: 9007199254740992.0, golden: false},
|
|
|
|
{
|
|
in: `{"V": {"F2": "hello"}}`,
|
|
ptr: new(VOuter),
|
|
err: &UnmarshalTypeError{
|
|
Value: "string",
|
|
Struct: "V",
|
|
Field: "V.F2",
|
|
Type: reflect.TypeOf(int32(0)),
|
|
Offset: 20,
|
|
},
|
|
},
|
|
{
|
|
in: `{"V": {"F4": {}, "F2": "hello"}}`,
|
|
ptr: new(VOuter),
|
|
err: &UnmarshalTypeError{
|
|
Value: "string",
|
|
Struct: "V",
|
|
Field: "V.F2",
|
|
Type: reflect.TypeOf(int32(0)),
|
|
Offset: 30,
|
|
},
|
|
},
|
|
|
|
// issue 15146.
|
|
// invalid inputs in wrongStringTests below.
|
|
{in: `{"B":"true"}`, ptr: new(B), out: B{true}, golden: true},
|
|
{in: `{"B":"false"}`, ptr: new(B), out: B{false}, golden: true},
|
|
{in: `{"B": "maybe"}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal "maybe" into bool`)},
|
|
{in: `{"B": "tru"}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal "tru" into bool`)},
|
|
{in: `{"B": "False"}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal "False" into bool`)},
|
|
{in: `{"B": "null"}`, ptr: new(B), out: B{false}},
|
|
{in: `{"B": "nul"}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal "nul" into bool`)},
|
|
{in: `{"B": [2, 3]}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal unquoted value into bool`)},
|
|
|
|
// additional tests for disallowUnknownFields
|
|
{
|
|
in: `{
|
|
"Level0": 1,
|
|
"Level1b": 2,
|
|
"Level1c": 3,
|
|
"x": 4,
|
|
"Level1a": 5,
|
|
"LEVEL1B": 6,
|
|
"e": {
|
|
"Level1a": 8,
|
|
"Level1b": 9,
|
|
"Level1c": 10,
|
|
"Level1d": 11,
|
|
"x": 12
|
|
},
|
|
"Loop1": 13,
|
|
"Loop2": 14,
|
|
"X": 15,
|
|
"Y": 16,
|
|
"Z": 17,
|
|
"Q": 18,
|
|
"extra": true
|
|
}`,
|
|
ptr: new(Top),
|
|
err: fmt.Errorf("json: unknown field \"extra\""),
|
|
disallowUnknownFields: true,
|
|
},
|
|
{
|
|
in: `{
|
|
"Level0": 1,
|
|
"Level1b": 2,
|
|
"Level1c": 3,
|
|
"x": 4,
|
|
"Level1a": 5,
|
|
"LEVEL1B": 6,
|
|
"e": {
|
|
"Level1a": 8,
|
|
"Level1b": 9,
|
|
"Level1c": 10,
|
|
"Level1d": 11,
|
|
"x": 12,
|
|
"extra": null
|
|
},
|
|
"Loop1": 13,
|
|
"Loop2": 14,
|
|
"X": 15,
|
|
"Y": 16,
|
|
"Z": 17,
|
|
"Q": 18
|
|
}`,
|
|
ptr: new(Top),
|
|
err: fmt.Errorf("json: unknown field \"extra\""),
|
|
disallowUnknownFields: true,
|
|
},
|
|
// issue 26444
|
|
// UnmarshalTypeError without field & struct values
|
|
{
|
|
in: `{"data":{"test1": "bob", "test2": 123}}`,
|
|
ptr: new(mapStringToStringData),
|
|
err: &UnmarshalTypeError{Value: "number", Type: reflect.TypeOf(""), Offset: 37, Struct: "mapStringToStringData", Field: "data"},
|
|
},
|
|
{
|
|
in: `{"data":{"test1": 123, "test2": "bob"}}`,
|
|
ptr: new(mapStringToStringData),
|
|
err: &UnmarshalTypeError{Value: "number", Type: reflect.TypeOf(""), Offset: 21, Struct: "mapStringToStringData", Field: "data"},
|
|
},
|
|
|
|
// trying to decode JSON arrays or objects via TextUnmarshaler
|
|
{
|
|
in: `[1, 2, 3]`,
|
|
ptr: new(MustNotUnmarshalText),
|
|
err: &UnmarshalTypeError{Value: "array", Type: reflect.TypeOf(&MustNotUnmarshalText{}), Offset: 1},
|
|
},
|
|
{
|
|
in: `{"foo": "bar"}`,
|
|
ptr: new(MustNotUnmarshalText),
|
|
err: &UnmarshalTypeError{Value: "object", Type: reflect.TypeOf(&MustNotUnmarshalText{}), Offset: 1},
|
|
},
|
|
// #22369
|
|
{
|
|
in: `{"PP": {"T": {"Y": "bad-type"}}}`,
|
|
ptr: new(P),
|
|
err: &UnmarshalTypeError{
|
|
Value: "string",
|
|
Struct: "T",
|
|
Field: "PP.T.Y",
|
|
Type: reflect.TypeOf(int(0)),
|
|
Offset: 29,
|
|
},
|
|
},
|
|
{
|
|
in: `{"Ts": [{"Y": 1}, {"Y": 2}, {"Y": "bad-type"}]}`,
|
|
ptr: new(PP),
|
|
err: &UnmarshalTypeError{
|
|
Value: "string",
|
|
Struct: "T",
|
|
Field: "Ts.Y",
|
|
Type: reflect.TypeOf(int(0)),
|
|
Offset: 29,
|
|
},
|
|
},
|
|
// #14702
|
|
{
|
|
in: `invalid`,
|
|
ptr: new(Number),
|
|
err: &SyntaxError{
|
|
msg: "invalid character 'i' looking for beginning of value",
|
|
Offset: 1,
|
|
},
|
|
},
|
|
{
|
|
in: `"invalid"`,
|
|
ptr: new(Number),
|
|
err: fmt.Errorf("json: invalid number literal, trying to unmarshal %q into Number", `"invalid"`),
|
|
},
|
|
{
|
|
in: `{"A":"invalid"}`,
|
|
ptr: new(struct{ A Number }),
|
|
err: fmt.Errorf("json: invalid number literal, trying to unmarshal %q into Number", `"invalid"`),
|
|
},
|
|
{
|
|
in: `{"A":"invalid"}`,
|
|
ptr: new(struct {
|
|
A Number `json:",string"`
|
|
}),
|
|
err: fmt.Errorf("json: invalid use of ,string struct tag, trying to unmarshal %q into json.Number", `invalid`),
|
|
},
|
|
{
|
|
in: `{"A":"invalid"}`,
|
|
ptr: new(map[string]Number),
|
|
err: fmt.Errorf("json: invalid number literal, trying to unmarshal %q into Number", `"invalid"`),
|
|
},
|
|
}
|
|
|
|
func TestMarshal(t *testing.T) {
|
|
b, err := Marshal(allValue)
|
|
if err != nil {
|
|
t.Fatalf("Marshal allValue: %v", err)
|
|
}
|
|
if string(b) != allValueCompact {
|
|
t.Errorf("Marshal allValueCompact")
|
|
diff(t, b, []byte(allValueCompact))
|
|
return
|
|
}
|
|
|
|
b, err = Marshal(pallValue)
|
|
if err != nil {
|
|
t.Fatalf("Marshal pallValue: %v", err)
|
|
}
|
|
if string(b) != pallValueCompact {
|
|
t.Errorf("Marshal pallValueCompact")
|
|
diff(t, b, []byte(pallValueCompact))
|
|
return
|
|
}
|
|
}
|
|
|
|
var badUTF8 = []struct {
|
|
in, out string
|
|
}{
|
|
{"hello\xffworld", `"hello\ufffdworld"`},
|
|
{"", `""`},
|
|
{"\xff", `"\ufffd"`},
|
|
{"\xff\xff", `"\ufffd\ufffd"`},
|
|
{"a\xffb", `"a\ufffdb"`},
|
|
{"\xe6\x97\xa5\xe6\x9c\xac\xff\xaa\x9e", `"日本\ufffd\ufffd\ufffd"`},
|
|
}
|
|
|
|
func TestMarshalBadUTF8(t *testing.T) {
|
|
for _, tt := range badUTF8 {
|
|
b, err := Marshal(tt.in)
|
|
if string(b) != tt.out || err != nil {
|
|
t.Errorf("Marshal(%q) = %#q, %v, want %#q, nil", tt.in, b, err, tt.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestMarshalNumberZeroVal(t *testing.T) {
|
|
var n Number
|
|
out, err := Marshal(n)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
outStr := string(out)
|
|
if outStr != "0" {
|
|
t.Fatalf("Invalid zero val for Number: %q", outStr)
|
|
}
|
|
}
|
|
|
|
func TestMarshalEmbeds(t *testing.T) {
|
|
top := &Top{
|
|
Level0: 1,
|
|
Embed0: Embed0{
|
|
Level1b: 2,
|
|
Level1c: 3,
|
|
},
|
|
Embed0a: &Embed0a{
|
|
Level1a: 5,
|
|
Level1b: 6,
|
|
},
|
|
Embed0b: &Embed0b{
|
|
Level1a: 8,
|
|
Level1b: 9,
|
|
Level1c: 10,
|
|
Level1d: 11,
|
|
Level1e: 12,
|
|
},
|
|
Loop: Loop{
|
|
Loop1: 13,
|
|
Loop2: 14,
|
|
},
|
|
Embed0p: Embed0p{
|
|
Point: image.Point{X: 15, Y: 16},
|
|
},
|
|
Embed0q: Embed0q{
|
|
Point: Point{Z: 17},
|
|
},
|
|
embed: embed{
|
|
Q: 18,
|
|
},
|
|
}
|
|
b, err := Marshal(top)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
want := "{\"Level0\":1,\"Level1b\":2,\"Level1c\":3,\"Level1a\":5,\"LEVEL1B\":6,\"e\":{\"Level1a\":8,\"Level1b\":9,\"Level1c\":10,\"Level1d\":11,\"x\":12},\"Loop1\":13,\"Loop2\":14,\"X\":15,\"Y\":16,\"Z\":17,\"Q\":18}"
|
|
if string(b) != want {
|
|
t.Errorf("Wrong marshal result.\n got: %q\nwant: %q", b, want)
|
|
}
|
|
}
|
|
|
|
func equalError(a, b error) bool {
|
|
if a == nil {
|
|
return b == nil
|
|
}
|
|
if b == nil {
|
|
return a == nil
|
|
}
|
|
return a.Error() == b.Error()
|
|
}
|
|
|
|
func TestUnmarshal(t *testing.T) {
|
|
for i, tt := range unmarshalTests {
|
|
var scan scanner
|
|
in := []byte(tt.in)
|
|
if err := checkValid(in, &scan); err != nil {
|
|
if !equalError(err, tt.err) {
|
|
t.Errorf("#%d: checkValid: %#v", i, err)
|
|
continue
|
|
}
|
|
}
|
|
if tt.ptr == nil {
|
|
continue
|
|
}
|
|
|
|
typ := reflect.TypeOf(tt.ptr)
|
|
if typ.Kind() != reflect.Ptr {
|
|
t.Errorf("#%d: unmarshalTest.ptr %T is not a pointer type", i, tt.ptr)
|
|
continue
|
|
}
|
|
typ = typ.Elem()
|
|
|
|
// v = new(right-type)
|
|
v := reflect.New(typ)
|
|
|
|
if !reflect.DeepEqual(tt.ptr, v.Interface()) {
|
|
// There's no reason for ptr to point to non-zero data,
|
|
// as we decode into new(right-type), so the data is
|
|
// discarded.
|
|
// This can easily mean tests that silently don't test
|
|
// what they should. To test decoding into existing
|
|
// data, see TestPrefilled.
|
|
t.Errorf("#%d: unmarshalTest.ptr %#v is not a pointer to a zero value", i, tt.ptr)
|
|
continue
|
|
}
|
|
|
|
dec := NewDecoder(bytes.NewReader(in))
|
|
if tt.useNumber {
|
|
dec.UseNumber()
|
|
}
|
|
if tt.disallowUnknownFields {
|
|
dec.DisallowUnknownFields()
|
|
}
|
|
if err := dec.Decode(v.Interface()); !equalError(err, tt.err) {
|
|
t.Errorf("#%d: %v, want %v", i, err, tt.err)
|
|
continue
|
|
} else if err != nil {
|
|
continue
|
|
}
|
|
if !reflect.DeepEqual(v.Elem().Interface(), tt.out) {
|
|
t.Errorf("#%d: mismatch\nhave: %#+v\nwant: %#+v", i, v.Elem().Interface(), tt.out)
|
|
data, _ := Marshal(v.Elem().Interface())
|
|
println(string(data))
|
|
data, _ = Marshal(tt.out)
|
|
println(string(data))
|
|
continue
|
|
}
|
|
|
|
// Check round trip also decodes correctly.
|
|
if tt.err == nil {
|
|
enc, err := Marshal(v.Interface())
|
|
if err != nil {
|
|
t.Errorf("#%d: error re-marshaling: %v", i, err)
|
|
continue
|
|
}
|
|
if tt.golden && !bytes.Equal(enc, in) {
|
|
t.Errorf("#%d: remarshal mismatch:\nhave: %s\nwant: %s", i, enc, in)
|
|
}
|
|
vv := reflect.New(reflect.TypeOf(tt.ptr).Elem())
|
|
dec = NewDecoder(bytes.NewReader(enc))
|
|
if tt.useNumber {
|
|
dec.UseNumber()
|
|
}
|
|
if err := dec.Decode(vv.Interface()); err != nil {
|
|
t.Errorf("#%d: error re-unmarshaling %#q: %v", i, enc, err)
|
|
continue
|
|
}
|
|
if !reflect.DeepEqual(v.Elem().Interface(), vv.Elem().Interface()) {
|
|
t.Errorf("#%d: mismatch\nhave: %#+v\nwant: %#+v", i, v.Elem().Interface(), vv.Elem().Interface())
|
|
t.Errorf(" In: %q", strings.Map(noSpace, string(in)))
|
|
t.Errorf("Marshal: %q", strings.Map(noSpace, string(enc)))
|
|
continue
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestUnmarshalMarshal(t *testing.T) {
|
|
initBig()
|
|
var v interface{}
|
|
if err := Unmarshal(jsonBig, &v); err != nil {
|
|
t.Fatalf("Unmarshal: %v", err)
|
|
}
|
|
b, err := Marshal(v)
|
|
if err != nil {
|
|
t.Fatalf("Marshal: %v", err)
|
|
}
|
|
if !bytes.Equal(jsonBig, b) {
|
|
t.Errorf("Marshal jsonBig")
|
|
diff(t, b, jsonBig)
|
|
return
|
|
}
|
|
}
|
|
|
|
var numberTests = []struct {
|
|
in string
|
|
i int64
|
|
intErr string
|
|
f float64
|
|
floatErr string
|
|
}{
|
|
{in: "-1.23e1", intErr: "strconv.ParseInt: parsing \"-1.23e1\": invalid syntax", f: -1.23e1},
|
|
{in: "-12", i: -12, f: -12.0},
|
|
{in: "1e1000", intErr: "strconv.ParseInt: parsing \"1e1000\": invalid syntax", floatErr: "strconv.ParseFloat: parsing \"1e1000\": value out of range"},
|
|
}
|
|
|
|
// Independent of Decode, basic coverage of the accessors in Number
|
|
func TestNumberAccessors(t *testing.T) {
|
|
for _, tt := range numberTests {
|
|
n := Number(tt.in)
|
|
if s := n.String(); s != tt.in {
|
|
t.Errorf("Number(%q).String() is %q", tt.in, s)
|
|
}
|
|
if i, err := n.Int64(); err == nil && tt.intErr == "" && i != tt.i {
|
|
t.Errorf("Number(%q).Int64() is %d", tt.in, i)
|
|
} else if (err == nil && tt.intErr != "") || (err != nil && err.Error() != tt.intErr) {
|
|
t.Errorf("Number(%q).Int64() wanted error %q but got: %v", tt.in, tt.intErr, err)
|
|
}
|
|
if f, err := n.Float64(); err == nil && tt.floatErr == "" && f != tt.f {
|
|
t.Errorf("Number(%q).Float64() is %g", tt.in, f)
|
|
} else if (err == nil && tt.floatErr != "") || (err != nil && err.Error() != tt.floatErr) {
|
|
t.Errorf("Number(%q).Float64() wanted error %q but got: %v", tt.in, tt.floatErr, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestLargeByteSlice(t *testing.T) {
|
|
s0 := make([]byte, 2000)
|
|
for i := range s0 {
|
|
s0[i] = byte(i)
|
|
}
|
|
b, err := Marshal(s0)
|
|
if err != nil {
|
|
t.Fatalf("Marshal: %v", err)
|
|
}
|
|
var s1 []byte
|
|
if err := Unmarshal(b, &s1); err != nil {
|
|
t.Fatalf("Unmarshal: %v", err)
|
|
}
|
|
if !bytes.Equal(s0, s1) {
|
|
t.Errorf("Marshal large byte slice")
|
|
diff(t, s0, s1)
|
|
}
|
|
}
|
|
|
|
type Xint struct {
|
|
X int
|
|
}
|
|
|
|
func TestUnmarshalInterface(t *testing.T) {
|
|
var xint Xint
|
|
var i interface{} = &xint
|
|
if err := Unmarshal([]byte(`{"X":1}`), &i); err != nil {
|
|
t.Fatalf("Unmarshal: %v", err)
|
|
}
|
|
if xint.X != 1 {
|
|
t.Fatalf("Did not write to xint")
|
|
}
|
|
}
|
|
|
|
func TestUnmarshalPtrPtr(t *testing.T) {
|
|
var xint Xint
|
|
pxint := &xint
|
|
if err := Unmarshal([]byte(`{"X":1}`), &pxint); err != nil {
|
|
t.Fatalf("Unmarshal: %v", err)
|
|
}
|
|
if xint.X != 1 {
|
|
t.Fatalf("Did not write to xint")
|
|
}
|
|
}
|
|
|
|
func TestEscape(t *testing.T) {
|
|
const input = `"foobar"<html>` + " [\u2028 \u2029]"
|
|
const expected = `"\"foobar\"\u003chtml\u003e [\u2028 \u2029]"`
|
|
b, err := Marshal(input)
|
|
if err != nil {
|
|
t.Fatalf("Marshal error: %v", err)
|
|
}
|
|
if s := string(b); s != expected {
|
|
t.Errorf("Encoding of [%s]:\n got [%s]\nwant [%s]", input, s, expected)
|
|
}
|
|
}
|
|
|
|
// WrongString is a struct that's misusing the ,string modifier.
|
|
type WrongString struct {
|
|
Message string `json:"result,string"`
|
|
}
|
|
|
|
type wrongStringTest struct {
|
|
in, err string
|
|
}
|
|
|
|
var wrongStringTests = []wrongStringTest{
|
|
{`{"result":"x"}`, `json: invalid use of ,string struct tag, trying to unmarshal "x" into string`},
|
|
{`{"result":"foo"}`, `json: invalid use of ,string struct tag, trying to unmarshal "foo" into string`},
|
|
{`{"result":"123"}`, `json: invalid use of ,string struct tag, trying to unmarshal "123" into string`},
|
|
{`{"result":123}`, `json: invalid use of ,string struct tag, trying to unmarshal unquoted value into string`},
|
|
{`{"result":"\""}`, `json: invalid use of ,string struct tag, trying to unmarshal "\"" into string`},
|
|
{`{"result":"\"foo"}`, `json: invalid use of ,string struct tag, trying to unmarshal "\"foo" into string`},
|
|
}
|
|
|
|
// If people misuse the ,string modifier, the error message should be
|
|
// helpful, telling the user that they're doing it wrong.
|
|
func TestErrorMessageFromMisusedString(t *testing.T) {
|
|
for n, tt := range wrongStringTests {
|
|
r := strings.NewReader(tt.in)
|
|
var s WrongString
|
|
err := NewDecoder(r).Decode(&s)
|
|
got := fmt.Sprintf("%v", err)
|
|
if got != tt.err {
|
|
t.Errorf("%d. got err = %q, want %q", n, got, tt.err)
|
|
}
|
|
}
|
|
}
|
|
|
|
func noSpace(c rune) rune {
|
|
if isSpace(byte(c)) { //only used for ascii
|
|
return -1
|
|
}
|
|
return c
|
|
}
|
|
|
|
type All struct {
|
|
Bool bool
|
|
Int int
|
|
Int8 int8
|
|
Int16 int16
|
|
Int32 int32
|
|
Int64 int64
|
|
Uint uint
|
|
Uint8 uint8
|
|
Uint16 uint16
|
|
Uint32 uint32
|
|
Uint64 uint64
|
|
Uintptr uintptr
|
|
Float32 float32
|
|
Float64 float64
|
|
|
|
Foo string `json:"bar"`
|
|
Foo2 string `json:"bar2,dummyopt"`
|
|
|
|
IntStr int64 `json:",string"`
|
|
UintptrStr uintptr `json:",string"`
|
|
|
|
PBool *bool
|
|
PInt *int
|
|
PInt8 *int8
|
|
PInt16 *int16
|
|
PInt32 *int32
|
|
PInt64 *int64
|
|
PUint *uint
|
|
PUint8 *uint8
|
|
PUint16 *uint16
|
|
PUint32 *uint32
|
|
PUint64 *uint64
|
|
PUintptr *uintptr
|
|
PFloat32 *float32
|
|
PFloat64 *float64
|
|
|
|
String string
|
|
PString *string
|
|
|
|
Map map[string]Small
|
|
MapP map[string]*Small
|
|
PMap *map[string]Small
|
|
PMapP *map[string]*Small
|
|
|
|
EmptyMap map[string]Small
|
|
NilMap map[string]Small
|
|
|
|
Slice []Small
|
|
SliceP []*Small
|
|
PSlice *[]Small
|
|
PSliceP *[]*Small
|
|
|
|
EmptySlice []Small
|
|
NilSlice []Small
|
|
|
|
StringSlice []string
|
|
ByteSlice []byte
|
|
|
|
Small Small
|
|
PSmall *Small
|
|
PPSmall **Small
|
|
|
|
Interface interface{}
|
|
PInterface *interface{}
|
|
|
|
unexported int
|
|
}
|
|
|
|
type Small struct {
|
|
Tag string
|
|
}
|
|
|
|
var allValue = All{
|
|
Bool: true,
|
|
Int: 2,
|
|
Int8: 3,
|
|
Int16: 4,
|
|
Int32: 5,
|
|
Int64: 6,
|
|
Uint: 7,
|
|
Uint8: 8,
|
|
Uint16: 9,
|
|
Uint32: 10,
|
|
Uint64: 11,
|
|
Uintptr: 12,
|
|
Float32: 14.1,
|
|
Float64: 15.1,
|
|
Foo: "foo",
|
|
Foo2: "foo2",
|
|
IntStr: 42,
|
|
UintptrStr: 44,
|
|
String: "16",
|
|
Map: map[string]Small{
|
|
"17": {Tag: "tag17"},
|
|
"18": {Tag: "tag18"},
|
|
},
|
|
MapP: map[string]*Small{
|
|
"19": {Tag: "tag19"},
|
|
"20": nil,
|
|
},
|
|
EmptyMap: map[string]Small{},
|
|
Slice: []Small{{Tag: "tag20"}, {Tag: "tag21"}},
|
|
SliceP: []*Small{{Tag: "tag22"}, nil, {Tag: "tag23"}},
|
|
EmptySlice: []Small{},
|
|
StringSlice: []string{"str24", "str25", "str26"},
|
|
ByteSlice: []byte{27, 28, 29},
|
|
Small: Small{Tag: "tag30"},
|
|
PSmall: &Small{Tag: "tag31"},
|
|
Interface: 5.2,
|
|
}
|
|
|
|
var pallValue = All{
|
|
PBool: &allValue.Bool,
|
|
PInt: &allValue.Int,
|
|
PInt8: &allValue.Int8,
|
|
PInt16: &allValue.Int16,
|
|
PInt32: &allValue.Int32,
|
|
PInt64: &allValue.Int64,
|
|
PUint: &allValue.Uint,
|
|
PUint8: &allValue.Uint8,
|
|
PUint16: &allValue.Uint16,
|
|
PUint32: &allValue.Uint32,
|
|
PUint64: &allValue.Uint64,
|
|
PUintptr: &allValue.Uintptr,
|
|
PFloat32: &allValue.Float32,
|
|
PFloat64: &allValue.Float64,
|
|
PString: &allValue.String,
|
|
PMap: &allValue.Map,
|
|
PMapP: &allValue.MapP,
|
|
PSlice: &allValue.Slice,
|
|
PSliceP: &allValue.SliceP,
|
|
PPSmall: &allValue.PSmall,
|
|
PInterface: &allValue.Interface,
|
|
}
|
|
|
|
var allValueIndent = `{
|
|
"Bool": true,
|
|
"Int": 2,
|
|
"Int8": 3,
|
|
"Int16": 4,
|
|
"Int32": 5,
|
|
"Int64": 6,
|
|
"Uint": 7,
|
|
"Uint8": 8,
|
|
"Uint16": 9,
|
|
"Uint32": 10,
|
|
"Uint64": 11,
|
|
"Uintptr": 12,
|
|
"Float32": 14.1,
|
|
"Float64": 15.1,
|
|
"bar": "foo",
|
|
"bar2": "foo2",
|
|
"IntStr": "42",
|
|
"UintptrStr": "44",
|
|
"PBool": null,
|
|
"PInt": null,
|
|
"PInt8": null,
|
|
"PInt16": null,
|
|
"PInt32": null,
|
|
"PInt64": null,
|
|
"PUint": null,
|
|
"PUint8": null,
|
|
"PUint16": null,
|
|
"PUint32": null,
|
|
"PUint64": null,
|
|
"PUintptr": null,
|
|
"PFloat32": null,
|
|
"PFloat64": null,
|
|
"String": "16",
|
|
"PString": null,
|
|
"Map": {
|
|
"17": {
|
|
"Tag": "tag17"
|
|
},
|
|
"18": {
|
|
"Tag": "tag18"
|
|
}
|
|
},
|
|
"MapP": {
|
|
"19": {
|
|
"Tag": "tag19"
|
|
},
|
|
"20": null
|
|
},
|
|
"PMap": null,
|
|
"PMapP": null,
|
|
"EmptyMap": {},
|
|
"NilMap": null,
|
|
"Slice": [
|
|
{
|
|
"Tag": "tag20"
|
|
},
|
|
{
|
|
"Tag": "tag21"
|
|
}
|
|
],
|
|
"SliceP": [
|
|
{
|
|
"Tag": "tag22"
|
|
},
|
|
null,
|
|
{
|
|
"Tag": "tag23"
|
|
}
|
|
],
|
|
"PSlice": null,
|
|
"PSliceP": null,
|
|
"EmptySlice": [],
|
|
"NilSlice": null,
|
|
"StringSlice": [
|
|
"str24",
|
|
"str25",
|
|
"str26"
|
|
],
|
|
"ByteSlice": "Gxwd",
|
|
"Small": {
|
|
"Tag": "tag30"
|
|
},
|
|
"PSmall": {
|
|
"Tag": "tag31"
|
|
},
|
|
"PPSmall": null,
|
|
"Interface": 5.2,
|
|
"PInterface": null
|
|
}`
|
|
|
|
var allValueCompact = strings.Map(noSpace, allValueIndent)
|
|
|
|
var pallValueIndent = `{
|
|
"Bool": false,
|
|
"Int": 0,
|
|
"Int8": 0,
|
|
"Int16": 0,
|
|
"Int32": 0,
|
|
"Int64": 0,
|
|
"Uint": 0,
|
|
"Uint8": 0,
|
|
"Uint16": 0,
|
|
"Uint32": 0,
|
|
"Uint64": 0,
|
|
"Uintptr": 0,
|
|
"Float32": 0,
|
|
"Float64": 0,
|
|
"bar": "",
|
|
"bar2": "",
|
|
"IntStr": "0",
|
|
"UintptrStr": "0",
|
|
"PBool": true,
|
|
"PInt": 2,
|
|
"PInt8": 3,
|
|
"PInt16": 4,
|
|
"PInt32": 5,
|
|
"PInt64": 6,
|
|
"PUint": 7,
|
|
"PUint8": 8,
|
|
"PUint16": 9,
|
|
"PUint32": 10,
|
|
"PUint64": 11,
|
|
"PUintptr": 12,
|
|
"PFloat32": 14.1,
|
|
"PFloat64": 15.1,
|
|
"String": "",
|
|
"PString": "16",
|
|
"Map": null,
|
|
"MapP": null,
|
|
"PMap": {
|
|
"17": {
|
|
"Tag": "tag17"
|
|
},
|
|
"18": {
|
|
"Tag": "tag18"
|
|
}
|
|
},
|
|
"PMapP": {
|
|
"19": {
|
|
"Tag": "tag19"
|
|
},
|
|
"20": null
|
|
},
|
|
"EmptyMap": null,
|
|
"NilMap": null,
|
|
"Slice": null,
|
|
"SliceP": null,
|
|
"PSlice": [
|
|
{
|
|
"Tag": "tag20"
|
|
},
|
|
{
|
|
"Tag": "tag21"
|
|
}
|
|
],
|
|
"PSliceP": [
|
|
{
|
|
"Tag": "tag22"
|
|
},
|
|
null,
|
|
{
|
|
"Tag": "tag23"
|
|
}
|
|
],
|
|
"EmptySlice": null,
|
|
"NilSlice": null,
|
|
"StringSlice": null,
|
|
"ByteSlice": null,
|
|
"Small": {
|
|
"Tag": ""
|
|
},
|
|
"PSmall": null,
|
|
"PPSmall": {
|
|
"Tag": "tag31"
|
|
},
|
|
"Interface": null,
|
|
"PInterface": 5.2
|
|
}`
|
|
|
|
var pallValueCompact = strings.Map(noSpace, pallValueIndent)
|
|
|
|
func TestRefUnmarshal(t *testing.T) {
|
|
type S struct {
|
|
// Ref is defined in encode_test.go.
|
|
R0 Ref
|
|
R1 *Ref
|
|
R2 RefText
|
|
R3 *RefText
|
|
}
|
|
want := S{
|
|
R0: 12,
|
|
R1: new(Ref),
|
|
R2: 13,
|
|
R3: new(RefText),
|
|
}
|
|
*want.R1 = 12
|
|
*want.R3 = 13
|
|
|
|
var got S
|
|
if err := Unmarshal([]byte(`{"R0":"ref","R1":"ref","R2":"ref","R3":"ref"}`), &got); err != nil {
|
|
t.Fatalf("Unmarshal: %v", err)
|
|
}
|
|
if !reflect.DeepEqual(got, want) {
|
|
t.Errorf("got %+v, want %+v", got, want)
|
|
}
|
|
}
|
|
|
|
// Test that the empty string doesn't panic decoding when ,string is specified
|
|
// Issue 3450
|
|
func TestEmptyString(t *testing.T) {
|
|
type T2 struct {
|
|
Number1 int `json:",string"`
|
|
Number2 int `json:",string"`
|
|
}
|
|
data := `{"Number1":"1", "Number2":""}`
|
|
dec := NewDecoder(strings.NewReader(data))
|
|
var t2 T2
|
|
err := dec.Decode(&t2)
|
|
if err == nil {
|
|
t.Fatal("Decode: did not return error")
|
|
}
|
|
if t2.Number1 != 1 {
|
|
t.Fatal("Decode: did not set Number1")
|
|
}
|
|
}
|
|
|
|
// Test that a null for ,string is not replaced with the previous quoted string (issue 7046).
|
|
// It should also not be an error (issue 2540, issue 8587).
|
|
func TestNullString(t *testing.T) {
|
|
type T struct {
|
|
A int `json:",string"`
|
|
B int `json:",string"`
|
|
C *int `json:",string"`
|
|
}
|
|
data := []byte(`{"A": "1", "B": null, "C": null}`)
|
|
var s T
|
|
s.B = 1
|
|
s.C = new(int)
|
|
*s.C = 2
|
|
err := Unmarshal(data, &s)
|
|
if err != nil {
|
|
t.Fatalf("Unmarshal: %v", err)
|
|
}
|
|
if s.B != 1 || s.C != nil {
|
|
t.Fatalf("after Unmarshal, s.B=%d, s.C=%p, want 1, nil", s.B, s.C)
|
|
}
|
|
}
|
|
|
|
func intp(x int) *int {
|
|
p := new(int)
|
|
*p = x
|
|
return p
|
|
}
|
|
|
|
func intpp(x *int) **int {
|
|
pp := new(*int)
|
|
*pp = x
|
|
return pp
|
|
}
|
|
|
|
var interfaceSetTests = []struct {
|
|
pre interface{}
|
|
json string
|
|
post interface{}
|
|
}{
|
|
{"foo", `"bar"`, "bar"},
|
|
{"foo", `2`, 2.0},
|
|
{"foo", `true`, true},
|
|
{"foo", `null`, nil},
|
|
|
|
{nil, `null`, nil},
|
|
{new(int), `null`, nil},
|
|
{(*int)(nil), `null`, nil},
|
|
{new(*int), `null`, new(*int)},
|
|
{(**int)(nil), `null`, nil},
|
|
{intp(1), `null`, nil},
|
|
{intpp(nil), `null`, intpp(nil)},
|
|
{intpp(intp(1)), `null`, intpp(nil)},
|
|
}
|
|
|
|
func TestInterfaceSet(t *testing.T) {
|
|
for _, tt := range interfaceSetTests {
|
|
b := struct{ X interface{} }{tt.pre}
|
|
blob := `{"X":` + tt.json + `}`
|
|
if err := Unmarshal([]byte(blob), &b); err != nil {
|
|
t.Errorf("Unmarshal %#q: %v", blob, err)
|
|
continue
|
|
}
|
|
if !reflect.DeepEqual(b.X, tt.post) {
|
|
t.Errorf("Unmarshal %#q into %#v: X=%#v, want %#v", blob, tt.pre, b.X, tt.post)
|
|
}
|
|
}
|
|
}
|
|
|
|
type NullTest struct {
|
|
Bool bool
|
|
Int int
|
|
Int8 int8
|
|
Int16 int16
|
|
Int32 int32
|
|
Int64 int64
|
|
Uint uint
|
|
Uint8 uint8
|
|
Uint16 uint16
|
|
Uint32 uint32
|
|
Uint64 uint64
|
|
Float32 float32
|
|
Float64 float64
|
|
String string
|
|
PBool *bool
|
|
Map map[string]string
|
|
Slice []string
|
|
Interface interface{}
|
|
|
|
PRaw *RawMessage
|
|
PTime *time.Time
|
|
PBigInt *big.Int
|
|
PText *MustNotUnmarshalText
|
|
PBuffer *bytes.Buffer // has methods, just not relevant ones
|
|
PStruct *struct{}
|
|
|
|
Raw RawMessage
|
|
Time time.Time
|
|
BigInt big.Int
|
|
Text MustNotUnmarshalText
|
|
Buffer bytes.Buffer
|
|
Struct struct{}
|
|
}
|
|
|
|
// JSON null values should be ignored for primitives and string values instead of resulting in an error.
|
|
// Issue 2540
|
|
func TestUnmarshalNulls(t *testing.T) {
|
|
// Unmarshal docs:
|
|
// The JSON null value unmarshals into an interface, map, pointer, or slice
|
|
// by setting that Go value to nil. Because null is often used in JSON to mean
|
|
// ``not present,'' unmarshaling a JSON null into any other Go type has no effect
|
|
// on the value and produces no error.
|
|
|
|
jsonData := []byte(`{
|
|
"Bool" : null,
|
|
"Int" : null,
|
|
"Int8" : null,
|
|
"Int16" : null,
|
|
"Int32" : null,
|
|
"Int64" : null,
|
|
"Uint" : null,
|
|
"Uint8" : null,
|
|
"Uint16" : null,
|
|
"Uint32" : null,
|
|
"Uint64" : null,
|
|
"Float32" : null,
|
|
"Float64" : null,
|
|
"String" : null,
|
|
"PBool": null,
|
|
"Map": null,
|
|
"Slice": null,
|
|
"Interface": null,
|
|
"PRaw": null,
|
|
"PTime": null,
|
|
"PBigInt": null,
|
|
"PText": null,
|
|
"PBuffer": null,
|
|
"PStruct": null,
|
|
"Raw": null,
|
|
"Time": null,
|
|
"BigInt": null,
|
|
"Text": null,
|
|
"Buffer": null,
|
|
"Struct": null
|
|
}`)
|
|
nulls := NullTest{
|
|
Bool: true,
|
|
Int: 2,
|
|
Int8: 3,
|
|
Int16: 4,
|
|
Int32: 5,
|
|
Int64: 6,
|
|
Uint: 7,
|
|
Uint8: 8,
|
|
Uint16: 9,
|
|
Uint32: 10,
|
|
Uint64: 11,
|
|
Float32: 12.1,
|
|
Float64: 13.1,
|
|
String: "14",
|
|
PBool: new(bool),
|
|
Map: map[string]string{},
|
|
Slice: []string{},
|
|
Interface: new(MustNotUnmarshalJSON),
|
|
PRaw: new(RawMessage),
|
|
PTime: new(time.Time),
|
|
PBigInt: new(big.Int),
|
|
PText: new(MustNotUnmarshalText),
|
|
PStruct: new(struct{}),
|
|
PBuffer: new(bytes.Buffer),
|
|
Raw: RawMessage("123"),
|
|
Time: time.Unix(123456789, 0),
|
|
BigInt: *big.NewInt(123),
|
|
}
|
|
|
|
before := nulls.Time.String()
|
|
|
|
err := Unmarshal(jsonData, &nulls)
|
|
if err != nil {
|
|
t.Errorf("Unmarshal of null values failed: %v", err)
|
|
}
|
|
if !nulls.Bool || nulls.Int != 2 || nulls.Int8 != 3 || nulls.Int16 != 4 || nulls.Int32 != 5 || nulls.Int64 != 6 ||
|
|
nulls.Uint != 7 || nulls.Uint8 != 8 || nulls.Uint16 != 9 || nulls.Uint32 != 10 || nulls.Uint64 != 11 ||
|
|
nulls.Float32 != 12.1 || nulls.Float64 != 13.1 || nulls.String != "14" {
|
|
t.Errorf("Unmarshal of null values affected primitives")
|
|
}
|
|
|
|
if nulls.PBool != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.PBool")
|
|
}
|
|
if nulls.Map != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.Map")
|
|
}
|
|
if nulls.Slice != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.Slice")
|
|
}
|
|
if nulls.Interface != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.Interface")
|
|
}
|
|
if nulls.PRaw != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.PRaw")
|
|
}
|
|
if nulls.PTime != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.PTime")
|
|
}
|
|
if nulls.PBigInt != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.PBigInt")
|
|
}
|
|
if nulls.PText != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.PText")
|
|
}
|
|
if nulls.PBuffer != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.PBuffer")
|
|
}
|
|
if nulls.PStruct != nil {
|
|
t.Errorf("Unmarshal of null did not clear nulls.PStruct")
|
|
}
|
|
|
|
if string(nulls.Raw) != "null" {
|
|
t.Errorf("Unmarshal of RawMessage null did not record null: %v", string(nulls.Raw))
|
|
}
|
|
if nulls.Time.String() != before {
|
|
t.Errorf("Unmarshal of time.Time null set time to %v", nulls.Time.String())
|
|
}
|
|
if nulls.BigInt.String() != "123" {
|
|
t.Errorf("Unmarshal of big.Int null set int to %v", nulls.BigInt.String())
|
|
}
|
|
}
|
|
|
|
type MustNotUnmarshalJSON struct{}
|
|
|
|
func (x MustNotUnmarshalJSON) UnmarshalJSON(data []byte) error {
|
|
return errors.New("MustNotUnmarshalJSON was used")
|
|
}
|
|
|
|
type MustNotUnmarshalText struct{}
|
|
|
|
func (x MustNotUnmarshalText) UnmarshalText(text []byte) error {
|
|
return errors.New("MustNotUnmarshalText was used")
|
|
}
|
|
|
|
func TestStringKind(t *testing.T) {
|
|
type stringKind string
|
|
|
|
var m1, m2 map[stringKind]int
|
|
m1 = map[stringKind]int{
|
|
"foo": 42,
|
|
}
|
|
|
|
data, err := Marshal(m1)
|
|
if err != nil {
|
|
t.Errorf("Unexpected error marshaling: %v", err)
|
|
}
|
|
|
|
err = Unmarshal(data, &m2)
|
|
if err != nil {
|
|
t.Errorf("Unexpected error unmarshaling: %v", err)
|
|
}
|
|
|
|
if !reflect.DeepEqual(m1, m2) {
|
|
t.Error("Items should be equal after encoding and then decoding")
|
|
}
|
|
}
|
|
|
|
// Custom types with []byte as underlying type could not be marshaled
|
|
// and then unmarshaled.
|
|
// Issue 8962.
|
|
func TestByteKind(t *testing.T) {
|
|
type byteKind []byte
|
|
|
|
a := byteKind("hello")
|
|
|
|
data, err := Marshal(a)
|
|
if err != nil {
|
|
t.Error(err)
|
|
}
|
|
var b byteKind
|
|
err = Unmarshal(data, &b)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !reflect.DeepEqual(a, b) {
|
|
t.Errorf("expected %v == %v", a, b)
|
|
}
|
|
}
|
|
|
|
// The fix for issue 8962 introduced a regression.
|
|
// Issue 12921.
|
|
func TestSliceOfCustomByte(t *testing.T) {
|
|
type Uint8 uint8
|
|
|
|
a := []Uint8("hello")
|
|
|
|
data, err := Marshal(a)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
var b []Uint8
|
|
err = Unmarshal(data, &b)
|
|
if err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
if !reflect.DeepEqual(a, b) {
|
|
t.Fatalf("expected %v == %v", a, b)
|
|
}
|
|
}
|
|
|
|
var decodeTypeErrorTests = []struct {
|
|
dest interface{}
|
|
src string
|
|
}{
|
|
{new(string), `{"user": "name"}`}, // issue 4628.
|
|
{new(error), `{}`}, // issue 4222
|
|
{new(error), `[]`},
|
|
{new(error), `""`},
|
|
{new(error), `123`},
|
|
{new(error), `true`},
|
|
}
|
|
|
|
func TestUnmarshalTypeError(t *testing.T) {
|
|
for _, item := range decodeTypeErrorTests {
|
|
err := Unmarshal([]byte(item.src), item.dest)
|
|
if _, ok := err.(*UnmarshalTypeError); !ok {
|
|
t.Errorf("expected type error for Unmarshal(%q, type %T): got %T",
|
|
item.src, item.dest, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
var unmarshalSyntaxTests = []string{
|
|
"tru",
|
|
"fals",
|
|
"nul",
|
|
"123e",
|
|
`"hello`,
|
|
`[1,2,3`,
|
|
`{"key":1`,
|
|
`{"key":1,`,
|
|
}
|
|
|
|
func TestUnmarshalSyntax(t *testing.T) {
|
|
var x interface{}
|
|
for _, src := range unmarshalSyntaxTests {
|
|
err := Unmarshal([]byte(src), &x)
|
|
if _, ok := err.(*SyntaxError); !ok {
|
|
t.Errorf("expected syntax error for Unmarshal(%q): got %T", src, err)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Test handling of unexported fields that should be ignored.
|
|
// Issue 4660
|
|
type unexportedFields struct {
|
|
Name string
|
|
m map[string]interface{} `json:"-"`
|
|
m2 map[string]interface{} `json:"abcd"`
|
|
|
|
s []int `json:"-"`
|
|
}
|
|
|
|
func TestUnmarshalUnexported(t *testing.T) {
|
|
input := `{"Name": "Bob", "m": {"x": 123}, "m2": {"y": 456}, "abcd": {"z": 789}, "s": [2, 3]}`
|
|
want := &unexportedFields{Name: "Bob"}
|
|
|
|
out := &unexportedFields{}
|
|
err := Unmarshal([]byte(input), out)
|
|
if err != nil {
|
|
t.Errorf("got error %v, expected nil", err)
|
|
}
|
|
if !reflect.DeepEqual(out, want) {
|
|
t.Errorf("got %q, want %q", out, want)
|
|
}
|
|
}
|
|
|
|
// Time3339 is a time.Time which encodes to and from JSON
|
|
// as an RFC 3339 time in UTC.
|
|
type Time3339 time.Time
|
|
|
|
func (t *Time3339) UnmarshalJSON(b []byte) error {
|
|
if len(b) < 2 || b[0] != '"' || b[len(b)-1] != '"' {
|
|
return fmt.Errorf("types: failed to unmarshal non-string value %q as an RFC 3339 time", b)
|
|
}
|
|
tm, err := time.Parse(time.RFC3339, string(b[1:len(b)-1]))
|
|
if err != nil {
|
|
return err
|
|
}
|
|
*t = Time3339(tm)
|
|
return nil
|
|
}
|
|
|
|
func TestUnmarshalJSONLiteralError(t *testing.T) {
|
|
var t3 Time3339
|
|
err := Unmarshal([]byte(`"0000-00-00T00:00:00Z"`), &t3)
|
|
if err == nil {
|
|
t.Fatalf("expected error; got time %v", time.Time(t3))
|
|
}
|
|
if !strings.Contains(err.Error(), "range") {
|
|
t.Errorf("got err = %v; want out of range error", err)
|
|
}
|
|
}
|
|
|
|
// Test that extra object elements in an array do not result in a
|
|
// "data changing underfoot" error.
|
|
// Issue 3717
|
|
func TestSkipArrayObjects(t *testing.T) {
|
|
json := `[{}]`
|
|
var dest [0]interface{}
|
|
|
|
err := Unmarshal([]byte(json), &dest)
|
|
if err != nil {
|
|
t.Errorf("got error %q, want nil", err)
|
|
}
|
|
}
|
|
|
|
// Test semantics of pre-filled data, such as struct fields, map elements,
|
|
// slices, and arrays.
|
|
// Issues 4900 and 8837, among others.
|
|
func TestPrefilled(t *testing.T) {
|
|
type T struct {
|
|
A, B int
|
|
}
|
|
// Values here change, cannot reuse the table across runs.
|
|
var prefillTests = []struct {
|
|
in string
|
|
ptr interface{}
|
|
out interface{}
|
|
}{
|
|
{
|
|
in: `{"X": 1, "Y": 2}`,
|
|
ptr: &XYZ{X: float32(3), Y: int16(4), Z: 1.5},
|
|
out: &XYZ{X: float64(1), Y: float64(2), Z: 1.5},
|
|
},
|
|
{
|
|
in: `{"X": 1, "Y": 2}`,
|
|
ptr: &map[string]interface{}{"X": float32(3), "Y": int16(4), "Z": 1.5},
|
|
out: &map[string]interface{}{"X": float64(1), "Y": float64(2), "Z": 1.5},
|
|
},
|
|
{
|
|
in: `[2]`,
|
|
ptr: &[]int{1},
|
|
out: &[]int{2},
|
|
},
|
|
{
|
|
in: `[2, 3]`,
|
|
ptr: &[]int{1},
|
|
out: &[]int{2, 3},
|
|
},
|
|
{
|
|
in: `[2, 3]`,
|
|
ptr: &[...]int{1},
|
|
out: &[...]int{2},
|
|
},
|
|
{
|
|
in: `[3]`,
|
|
ptr: &[...]int{1, 2},
|
|
out: &[...]int{3, 0},
|
|
},
|
|
{
|
|
in: `[{"A": 3}]`,
|
|
ptr: &[]T{{A: -1, B: -2}, {A: -3, B: -4}},
|
|
out: &[]T{{A: 3}},
|
|
},
|
|
{
|
|
in: `[{"A": 3}]`,
|
|
ptr: &[...]T{{A: -1, B: -2}, {A: -3, B: -4}},
|
|
out: &[...]T{{A: 3, B: -2}, {}},
|
|
},
|
|
}
|
|
|
|
for _, tt := range prefillTests {
|
|
ptrstr := fmt.Sprintf("%v", tt.ptr)
|
|
err := Unmarshal([]byte(tt.in), tt.ptr) // tt.ptr edited here
|
|
if err != nil {
|
|
t.Errorf("Unmarshal: %v", err)
|
|
}
|
|
if !reflect.DeepEqual(tt.ptr, tt.out) {
|
|
t.Errorf("Unmarshal(%#q, %s): have %v, want %v", tt.in, ptrstr, tt.ptr, tt.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
var invalidUnmarshalTests = []struct {
|
|
v interface{}
|
|
want string
|
|
}{
|
|
{nil, "json: Unmarshal(nil)"},
|
|
{struct{}{}, "json: Unmarshal(non-pointer struct {})"},
|
|
{(*int)(nil), "json: Unmarshal(nil *int)"},
|
|
}
|
|
|
|
func TestInvalidUnmarshal(t *testing.T) {
|
|
buf := []byte(`{"a":"1"}`)
|
|
for _, tt := range invalidUnmarshalTests {
|
|
err := Unmarshal(buf, tt.v)
|
|
if err == nil {
|
|
t.Errorf("Unmarshal expecting error, got nil")
|
|
continue
|
|
}
|
|
if got := err.Error(); got != tt.want {
|
|
t.Errorf("Unmarshal = %q; want %q", got, tt.want)
|
|
}
|
|
}
|
|
}
|
|
|
|
var invalidUnmarshalTextTests = []struct {
|
|
v interface{}
|
|
want string
|
|
}{
|
|
{nil, "json: Unmarshal(nil)"},
|
|
{struct{}{}, "json: Unmarshal(non-pointer struct {})"},
|
|
{(*int)(nil), "json: Unmarshal(nil *int)"},
|
|
{new(net.IP), "json: cannot unmarshal number into Go value of type *net.IP"},
|
|
}
|
|
|
|
func TestInvalidUnmarshalText(t *testing.T) {
|
|
buf := []byte(`123`)
|
|
for _, tt := range invalidUnmarshalTextTests {
|
|
err := Unmarshal(buf, tt.v)
|
|
if err == nil {
|
|
t.Errorf("Unmarshal expecting error, got nil")
|
|
continue
|
|
}
|
|
if got := err.Error(); got != tt.want {
|
|
t.Errorf("Unmarshal = %q; want %q", got, tt.want)
|
|
}
|
|
}
|
|
}
|
|
|
|
// Test that string option is ignored for invalid types.
|
|
// Issue 9812.
|
|
func TestInvalidStringOption(t *testing.T) {
|
|
num := 0
|
|
item := struct {
|
|
T time.Time `json:",string"`
|
|
M map[string]string `json:",string"`
|
|
S []string `json:",string"`
|
|
A [1]string `json:",string"`
|
|
I interface{} `json:",string"`
|
|
P *int `json:",string"`
|
|
}{M: make(map[string]string), S: make([]string, 0), I: num, P: &num}
|
|
|
|
data, err := Marshal(item)
|
|
if err != nil {
|
|
t.Fatalf("Marshal: %v", err)
|
|
}
|
|
|
|
err = Unmarshal(data, &item)
|
|
if err != nil {
|
|
t.Fatalf("Unmarshal: %v", err)
|
|
}
|
|
}
|
|
|
|
// Test unmarshal behavior with regards to embedded unexported structs.
|
|
//
|
|
// (Issue 21357) If the embedded struct is a pointer and is unallocated,
|
|
// this returns an error because unmarshal cannot set the field.
|
|
//
|
|
// (Issue 24152) If the embedded struct is given an explicit name,
|
|
// ensure that the normal unmarshal logic does not panic in reflect.
|
|
//
|
|
// (Issue 28145) If the embedded struct is given an explicit name and has
|
|
// exported methods, don't cause a panic trying to get its value.
|
|
func TestUnmarshalEmbeddedUnexported(t *testing.T) {
|
|
type (
|
|
embed1 struct{ Q int }
|
|
embed2 struct{ Q int }
|
|
embed3 struct {
|
|
Q int64 `json:",string"`
|
|
}
|
|
S1 struct {
|
|
*embed1
|
|
R int
|
|
}
|
|
S2 struct {
|
|
*embed1
|
|
Q int
|
|
}
|
|
S3 struct {
|
|
embed1
|
|
R int
|
|
}
|
|
S4 struct {
|
|
*embed1
|
|
embed2
|
|
}
|
|
S5 struct {
|
|
*embed3
|
|
R int
|
|
}
|
|
S6 struct {
|
|
embed1 `json:"embed1"`
|
|
}
|
|
S7 struct {
|
|
embed1 `json:"embed1"`
|
|
embed2
|
|
}
|
|
S8 struct {
|
|
embed1 `json:"embed1"`
|
|
embed2 `json:"embed2"`
|
|
Q int
|
|
}
|
|
S9 struct {
|
|
unexportedWithMethods `json:"embed"`
|
|
}
|
|
)
|
|
|
|
tests := []struct {
|
|
in string
|
|
ptr interface{}
|
|
out interface{}
|
|
err error
|
|
}{{
|
|
// Error since we cannot set S1.embed1, but still able to set S1.R.
|
|
in: `{"R":2,"Q":1}`,
|
|
ptr: new(S1),
|
|
out: &S1{R: 2},
|
|
err: fmt.Errorf("json: cannot set embedded pointer to unexported struct: json.embed1"),
|
|
}, {
|
|
// The top level Q field takes precedence.
|
|
in: `{"Q":1}`,
|
|
ptr: new(S2),
|
|
out: &S2{Q: 1},
|
|
}, {
|
|
// No issue with non-pointer variant.
|
|
in: `{"R":2,"Q":1}`,
|
|
ptr: new(S3),
|
|
out: &S3{embed1: embed1{Q: 1}, R: 2},
|
|
}, {
|
|
// No error since both embedded structs have field R, which annihilate each other.
|
|
// Thus, no attempt is made at setting S4.embed1.
|
|
in: `{"R":2}`,
|
|
ptr: new(S4),
|
|
out: new(S4),
|
|
}, {
|
|
// Error since we cannot set S5.embed1, but still able to set S5.R.
|
|
in: `{"R":2,"Q":1}`,
|
|
ptr: new(S5),
|
|
out: &S5{R: 2},
|
|
err: fmt.Errorf("json: cannot set embedded pointer to unexported struct: json.embed3"),
|
|
}, {
|
|
// Issue 24152, ensure decodeState.indirect does not panic.
|
|
in: `{"embed1": {"Q": 1}}`,
|
|
ptr: new(S6),
|
|
out: &S6{embed1{1}},
|
|
}, {
|
|
// Issue 24153, check that we can still set forwarded fields even in
|
|
// the presence of a name conflict.
|
|
//
|
|
// This relies on obscure behavior of reflect where it is possible
|
|
// to set a forwarded exported field on an unexported embedded struct
|
|
// even though there is a name conflict, even when it would have been
|
|
// impossible to do so according to Go visibility rules.
|
|
// Go forbids this because it is ambiguous whether S7.Q refers to
|
|
// S7.embed1.Q or S7.embed2.Q. Since embed1 and embed2 are unexported,
|
|
// it should be impossible for an external package to set either Q.
|
|
//
|
|
// It is probably okay for a future reflect change to break this.
|
|
in: `{"embed1": {"Q": 1}, "Q": 2}`,
|
|
ptr: new(S7),
|
|
out: &S7{embed1{1}, embed2{2}},
|
|
}, {
|
|
// Issue 24153, similar to the S7 case.
|
|
in: `{"embed1": {"Q": 1}, "embed2": {"Q": 2}, "Q": 3}`,
|
|
ptr: new(S8),
|
|
out: &S8{embed1{1}, embed2{2}, 3},
|
|
}, {
|
|
// Issue 228145, similar to the cases above.
|
|
in: `{"embed": {}}`,
|
|
ptr: new(S9),
|
|
out: &S9{},
|
|
}}
|
|
|
|
for i, tt := range tests {
|
|
err := Unmarshal([]byte(tt.in), tt.ptr)
|
|
if !equalError(err, tt.err) {
|
|
t.Errorf("#%d: %v, want %v", i, err, tt.err)
|
|
}
|
|
if !reflect.DeepEqual(tt.ptr, tt.out) {
|
|
t.Errorf("#%d: mismatch\ngot: %#+v\nwant: %#+v", i, tt.ptr, tt.out)
|
|
}
|
|
}
|
|
}
|
|
|
|
func TestUnmarshalErrorAfterMultipleJSON(t *testing.T) {
|
|
tests := []struct {
|
|
in string
|
|
err error
|
|
}{{
|
|
in: `1 false null :`,
|
|
err: &SyntaxError{"invalid character ':' looking for beginning of value", 14},
|
|
}, {
|
|
in: `1 [] [,]`,
|
|
err: &SyntaxError{"invalid character ',' looking for beginning of value", 7},
|
|
}, {
|
|
in: `1 [] [true:]`,
|
|
err: &SyntaxError{"invalid character ':' after array element", 11},
|
|
}, {
|
|
in: `1 {} {"x"=}`,
|
|
err: &SyntaxError{"invalid character '=' after object key", 14},
|
|
}, {
|
|
in: `falsetruenul#`,
|
|
err: &SyntaxError{"invalid character '#' in literal null (expecting 'l')", 13},
|
|
}}
|
|
for i, tt := range tests {
|
|
dec := NewDecoder(strings.NewReader(tt.in))
|
|
var err error
|
|
for {
|
|
var v interface{}
|
|
if err = dec.Decode(&v); err != nil {
|
|
break
|
|
}
|
|
}
|
|
if !reflect.DeepEqual(err, tt.err) {
|
|
t.Errorf("#%d: got %#v, want %#v", i, err, tt.err)
|
|
}
|
|
}
|
|
}
|
|
|
|
type unmarshalPanic struct{}
|
|
|
|
func (unmarshalPanic) UnmarshalJSON([]byte) error { panic(0xdead) }
|
|
|
|
func TestUnmarshalPanic(t *testing.T) {
|
|
defer func() {
|
|
if got := recover(); !reflect.DeepEqual(got, 0xdead) {
|
|
t.Errorf("panic() = (%T)(%v), want 0xdead", got, got)
|
|
}
|
|
}()
|
|
Unmarshal([]byte("{}"), &unmarshalPanic{})
|
|
t.Fatalf("Unmarshal should have panicked")
|
|
}
|
|
|
|
// The decoder used to hang if decoding into an interface pointing to its own address.
|
|
// See golang.org/issues/31740.
|
|
func TestUnmarshalRecursivePointer(t *testing.T) {
|
|
var v interface{}
|
|
v = &v
|
|
data := []byte(`{"a": "b"}`)
|
|
|
|
if err := Unmarshal(data, v); err != nil {
|
|
t.Fatal(err)
|
|
}
|
|
}
|
|
|
|
type textUnmarshalerString string
|
|
|
|
func (m *textUnmarshalerString) UnmarshalText(text []byte) error {
|
|
*m = textUnmarshalerString(strings.ToLower(string(text)))
|
|
return nil
|
|
}
|
|
|
|
// Test unmarshal to a map, where the map key is a user defined type.
|
|
// See golang.org/issues/34437.
|
|
func TestUnmarshalMapWithTextUnmarshalerStringKey(t *testing.T) {
|
|
var p map[textUnmarshalerString]string
|
|
if err := Unmarshal([]byte(`{"FOO": "1"}`), &p); err != nil {
|
|
t.Fatalf("Unmarshal unexpected error: %v", err)
|
|
}
|
|
|
|
if _, ok := p["foo"]; !ok {
|
|
t.Errorf(`Key "foo" does not exist in map: %v`, p)
|
|
}
|
|
}
|
|
|
|
func TestUnmarshalRescanLiteralMangledUnquote(t *testing.T) {
|
|
// See golang.org/issues/38105.
|
|
var p map[textUnmarshalerString]string
|
|
if err := Unmarshal([]byte(`{"开源":"12345开源"}`), &p); err != nil {
|
|
t.Fatalf("Unmarshal unexpected error: %v", err)
|
|
}
|
|
if _, ok := p["开源"]; !ok {
|
|
t.Errorf(`Key "开源" does not exist in map: %v`, p)
|
|
}
|
|
|
|
// See golang.org/issues/38126.
|
|
type T struct {
|
|
F1 string `json:"F1,string"`
|
|
}
|
|
t1 := T{"aaa\tbbb"}
|
|
|
|
b, err := Marshal(t1)
|
|
if err != nil {
|
|
t.Fatalf("Marshal unexpected error: %v", err)
|
|
}
|
|
var t2 T
|
|
if err := Unmarshal(b, &t2); err != nil {
|
|
t.Fatalf("Unmarshal unexpected error: %v", err)
|
|
}
|
|
if t1 != t2 {
|
|
t.Errorf("Marshal and Unmarshal roundtrip mismatch: want %q got %q", t1, t2)
|
|
}
|
|
}
|
|
|
|
func TestUnmarshalMaxDepth(t *testing.T) {
|
|
testcases := []struct {
|
|
name string
|
|
data string
|
|
errMaxDepth bool
|
|
}{
|
|
{
|
|
name: "ArrayUnderMaxNestingDepth",
|
|
data: `{"a":` + strings.Repeat(`[`, 10000-1) + strings.Repeat(`]`, 10000-1) + `}`,
|
|
errMaxDepth: false,
|
|
},
|
|
{
|
|
name: "ArrayOverMaxNestingDepth",
|
|
data: `{"a":` + strings.Repeat(`[`, 10000) + strings.Repeat(`]`, 10000) + `}`,
|
|
errMaxDepth: true,
|
|
},
|
|
{
|
|
name: "ArrayOverStackDepth",
|
|
data: `{"a":` + strings.Repeat(`[`, 3000000) + strings.Repeat(`]`, 3000000) + `}`,
|
|
errMaxDepth: true,
|
|
},
|
|
{
|
|
name: "ObjectUnderMaxNestingDepth",
|
|
data: `{"a":` + strings.Repeat(`{"a":`, 10000-1) + `0` + strings.Repeat(`}`, 10000-1) + `}`,
|
|
errMaxDepth: false,
|
|
},
|
|
{
|
|
name: "ObjectOverMaxNestingDepth",
|
|
data: `{"a":` + strings.Repeat(`{"a":`, 10000) + `0` + strings.Repeat(`}`, 10000) + `}`,
|
|
errMaxDepth: true,
|
|
},
|
|
{
|
|
name: "ObjectOverStackDepth",
|
|
data: `{"a":` + strings.Repeat(`{"a":`, 3000000) + `0` + strings.Repeat(`}`, 3000000) + `}`,
|
|
errMaxDepth: true,
|
|
},
|
|
}
|
|
|
|
targets := []struct {
|
|
name string
|
|
newValue func() interface{}
|
|
}{
|
|
{
|
|
name: "unstructured",
|
|
newValue: func() interface{} {
|
|
var v interface{}
|
|
return &v
|
|
},
|
|
},
|
|
{
|
|
name: "typed named field",
|
|
newValue: func() interface{} {
|
|
v := struct {
|
|
A interface{} `json:"a"`
|
|
}{}
|
|
return &v
|
|
},
|
|
},
|
|
{
|
|
name: "typed missing field",
|
|
newValue: func() interface{} {
|
|
v := struct {
|
|
B interface{} `json:"b"`
|
|
}{}
|
|
return &v
|
|
},
|
|
},
|
|
{
|
|
name: "custom unmarshaler",
|
|
newValue: func() interface{} {
|
|
v := unmarshaler{}
|
|
return &v
|
|
},
|
|
},
|
|
}
|
|
|
|
for _, tc := range testcases {
|
|
for _, target := range targets {
|
|
t.Run(target.name+"-"+tc.name, func(t *testing.T) {
|
|
err := Unmarshal([]byte(tc.data), target.newValue())
|
|
if !tc.errMaxDepth {
|
|
if err != nil {
|
|
t.Errorf("unexpected error: %v", err)
|
|
}
|
|
} else {
|
|
if err == nil {
|
|
t.Errorf("expected error containing 'exceeded max depth', got none")
|
|
} else if !strings.Contains(err.Error(), "exceeded max depth") {
|
|
t.Errorf("expected error containing 'exceeded max depth', got: %v", err)
|
|
}
|
|
}
|
|
})
|
|
}
|
|
}
|
|
}
|