| // Copyright 2010 The Go Authors. All rights reserved. |
| // Use of this source code is governed by a BSD-style |
| // license that can be found in the LICENSE file. |
| |
| package json |
| |
| import ( |
| "bytes" |
| "encoding" |
| "errors" |
| "fmt" |
| "image" |
| "math" |
| "math/big" |
| "net" |
| "reflect" |
| "slices" |
| "strconv" |
| "strings" |
| "testing" |
| "time" |
| ) |
| |
| type T struct { |
| X string |
| Y int |
| Z int `json:"-"` |
| } |
| |
| type U struct { |
| Alphabet string `json:"alpha"` |
| } |
| |
| type V struct { |
| F1 any |
| F2 int32 |
| F3 Number |
| F4 *VOuter |
| } |
| |
| type VOuter struct { |
| V V |
| } |
| |
| type W struct { |
| S SS |
| } |
| |
| type P struct { |
| PP PP |
| } |
| |
| type PP struct { |
| T T |
| Ts []T |
| } |
| |
| type SS string |
| |
| func (*SS) UnmarshalJSON(data []byte) error { |
| return &UnmarshalTypeError{Value: "number", Type: reflect.TypeFor[SS]()} |
| } |
| |
| // ifaceNumAsFloat64/ifaceNumAsNumber are used to test unmarshaling with and |
| // without UseNumber |
| var ifaceNumAsFloat64 = map[string]any{ |
| "k1": float64(1), |
| "k2": "s", |
| "k3": []any{float64(1), float64(2.0), float64(3e-3)}, |
| "k4": map[string]any{"kk1": "s", "kk2": float64(2)}, |
| } |
| |
| var ifaceNumAsNumber = map[string]any{ |
| "k1": Number("1"), |
| "k2": "s", |
| "k3": []any{Number("1"), Number("2.0"), Number("3e-3")}, |
| "k4": map[string]any{"kk1": "s", "kk2": Number("2")}, |
| } |
| |
| type tx struct { |
| x int |
| } |
| |
| type u8 uint8 |
| |
| // A type that can unmarshal itself. |
| |
| type unmarshaler struct { |
| T bool |
| } |
| |
| func (u *unmarshaler) UnmarshalJSON(b []byte) error { |
| *u = unmarshaler{true} // All we need to see that UnmarshalJSON is called. |
| return nil |
| } |
| |
| type ustruct struct { |
| M unmarshaler |
| } |
| |
| type unmarshalerText struct { |
| A, B string |
| } |
| |
| // needed for re-marshaling tests |
| func (u unmarshalerText) MarshalText() ([]byte, error) { |
| return []byte(u.A + ":" + u.B), nil |
| } |
| |
| func (u *unmarshalerText) UnmarshalText(b []byte) error { |
| pos := bytes.IndexByte(b, ':') |
| if pos == -1 { |
| return errors.New("missing separator") |
| } |
| u.A, u.B = string(b[:pos]), string(b[pos+1:]) |
| return nil |
| } |
| |
| var _ encoding.TextUnmarshaler = (*unmarshalerText)(nil) |
| |
| type ustructText struct { |
| M unmarshalerText |
| } |
| |
| // u8marshal is an integer type that can marshal/unmarshal itself. |
| type u8marshal uint8 |
| |
| func (u8 u8marshal) MarshalText() ([]byte, error) { |
| return []byte(fmt.Sprintf("u%d", u8)), nil |
| } |
| |
| var errMissingU8Prefix = errors.New("missing 'u' prefix") |
| |
| func (u8 *u8marshal) UnmarshalText(b []byte) error { |
| if !bytes.HasPrefix(b, []byte{'u'}) { |
| return errMissingU8Prefix |
| } |
| n, err := strconv.Atoi(string(b[1:])) |
| if err != nil { |
| return err |
| } |
| *u8 = u8marshal(n) |
| return nil |
| } |
| |
| var _ encoding.TextUnmarshaler = (*u8marshal)(nil) |
| |
| var ( |
| umtrue = unmarshaler{true} |
| umslice = []unmarshaler{{true}} |
| umstruct = ustruct{unmarshaler{true}} |
| |
| umtrueXY = unmarshalerText{"x", "y"} |
| umsliceXY = []unmarshalerText{{"x", "y"}} |
| umstructXY = ustructText{unmarshalerText{"x", "y"}} |
| |
| ummapXY = map[unmarshalerText]bool{{"x", "y"}: true} |
| ) |
| |
| // Test data structures for anonymous fields. |
| |
| type Point struct { |
| Z int |
| } |
| |
| type Top struct { |
| Level0 int |
| Embed0 |
| *Embed0a |
| *Embed0b `json:"e,omitempty"` // treated as named |
| Embed0c `json:"-"` // ignored |
| Loop |
| Embed0p // has Point with X, Y, used |
| Embed0q // has Point with Z, used |
| embed // contains exported field |
| } |
| |
| type Embed0 struct { |
| Level1a int // overridden by Embed0a's Level1a with json tag |
| Level1b int // used because Embed0a's Level1b is renamed |
| Level1c int // used because Embed0a's Level1c is ignored |
| Level1d int // annihilated by Embed0a's Level1d |
| Level1e int `json:"x"` // annihilated by Embed0a.Level1e |
| } |
| |
| type Embed0a struct { |
| Level1a int `json:"Level1a,omitempty"` |
| Level1b int `json:"LEVEL1B,omitempty"` |
| Level1c int `json:"-"` |
| Level1d int // annihilated by Embed0's Level1d |
| Level1f int `json:"x"` // annihilated by Embed0's Level1e |
| } |
| |
| type Embed0b Embed0 |
| |
| type Embed0c Embed0 |
| |
| type Embed0p struct { |
| image.Point |
| } |
| |
| type Embed0q struct { |
| Point |
| } |
| |
| type embed struct { |
| Q int |
| } |
| |
| type Loop struct { |
| Loop1 int `json:",omitempty"` |
| Loop2 int `json:",omitempty"` |
| *Loop |
| } |
| |
| // From reflect test: |
| // The X in S6 and S7 annihilate, but they also block the X in S8.S9. |
| type S5 struct { |
| S6 |
| S7 |
| S8 |
| } |
| |
| type S6 struct { |
| X int |
| } |
| |
| type S7 S6 |
| |
| type S8 struct { |
| S9 |
| } |
| |
| type S9 struct { |
| X int |
| Y int |
| } |
| |
| // From reflect test: |
| // The X in S11.S6 and S12.S6 annihilate, but they also block the X in S13.S8.S9. |
| type S10 struct { |
| S11 |
| S12 |
| S13 |
| } |
| |
| type S11 struct { |
| S6 |
| } |
| |
| type S12 struct { |
| S6 |
| } |
| |
| type S13 struct { |
| S8 |
| } |
| |
| type Ambig struct { |
| // Given "hello", the first match should win. |
| First int `json:"HELLO"` |
| Second int `json:"Hello"` |
| } |
| |
| type XYZ struct { |
| X any |
| Y any |
| Z any |
| } |
| |
| type unexportedWithMethods struct{} |
| |
| func (unexportedWithMethods) F() {} |
| |
| type byteWithMarshalJSON byte |
| |
| func (b byteWithMarshalJSON) MarshalJSON() ([]byte, error) { |
| return []byte(fmt.Sprintf(`"Z%.2x"`, byte(b))), nil |
| } |
| |
| func (b *byteWithMarshalJSON) UnmarshalJSON(data []byte) error { |
| if len(data) != 5 || data[0] != '"' || data[1] != 'Z' || data[4] != '"' { |
| return fmt.Errorf("bad quoted string") |
| } |
| i, err := strconv.ParseInt(string(data[2:4]), 16, 8) |
| if err != nil { |
| return fmt.Errorf("bad hex") |
| } |
| *b = byteWithMarshalJSON(i) |
| return nil |
| } |
| |
| type byteWithPtrMarshalJSON byte |
| |
| func (b *byteWithPtrMarshalJSON) MarshalJSON() ([]byte, error) { |
| return byteWithMarshalJSON(*b).MarshalJSON() |
| } |
| |
| func (b *byteWithPtrMarshalJSON) UnmarshalJSON(data []byte) error { |
| return (*byteWithMarshalJSON)(b).UnmarshalJSON(data) |
| } |
| |
| type byteWithMarshalText byte |
| |
| func (b byteWithMarshalText) MarshalText() ([]byte, error) { |
| return []byte(fmt.Sprintf(`Z%.2x`, byte(b))), nil |
| } |
| |
| func (b *byteWithMarshalText) UnmarshalText(data []byte) error { |
| if len(data) != 3 || data[0] != 'Z' { |
| return fmt.Errorf("bad quoted string") |
| } |
| i, err := strconv.ParseInt(string(data[1:3]), 16, 8) |
| if err != nil { |
| return fmt.Errorf("bad hex") |
| } |
| *b = byteWithMarshalText(i) |
| return nil |
| } |
| |
| type byteWithPtrMarshalText byte |
| |
| func (b *byteWithPtrMarshalText) MarshalText() ([]byte, error) { |
| return byteWithMarshalText(*b).MarshalText() |
| } |
| |
| func (b *byteWithPtrMarshalText) UnmarshalText(data []byte) error { |
| return (*byteWithMarshalText)(b).UnmarshalText(data) |
| } |
| |
| type intWithMarshalJSON int |
| |
| func (b intWithMarshalJSON) MarshalJSON() ([]byte, error) { |
| return []byte(fmt.Sprintf(`"Z%.2x"`, int(b))), nil |
| } |
| |
| func (b *intWithMarshalJSON) UnmarshalJSON(data []byte) error { |
| if len(data) != 5 || data[0] != '"' || data[1] != 'Z' || data[4] != '"' { |
| return fmt.Errorf("bad quoted string") |
| } |
| i, err := strconv.ParseInt(string(data[2:4]), 16, 8) |
| if err != nil { |
| return fmt.Errorf("bad hex") |
| } |
| *b = intWithMarshalJSON(i) |
| return nil |
| } |
| |
| type intWithPtrMarshalJSON int |
| |
| func (b *intWithPtrMarshalJSON) MarshalJSON() ([]byte, error) { |
| return intWithMarshalJSON(*b).MarshalJSON() |
| } |
| |
| func (b *intWithPtrMarshalJSON) UnmarshalJSON(data []byte) error { |
| return (*intWithMarshalJSON)(b).UnmarshalJSON(data) |
| } |
| |
| type intWithMarshalText int |
| |
| func (b intWithMarshalText) MarshalText() ([]byte, error) { |
| return []byte(fmt.Sprintf(`Z%.2x`, int(b))), nil |
| } |
| |
| func (b *intWithMarshalText) UnmarshalText(data []byte) error { |
| if len(data) != 3 || data[0] != 'Z' { |
| return fmt.Errorf("bad quoted string") |
| } |
| i, err := strconv.ParseInt(string(data[1:3]), 16, 8) |
| if err != nil { |
| return fmt.Errorf("bad hex") |
| } |
| *b = intWithMarshalText(i) |
| return nil |
| } |
| |
| type intWithPtrMarshalText int |
| |
| func (b *intWithPtrMarshalText) MarshalText() ([]byte, error) { |
| return intWithMarshalText(*b).MarshalText() |
| } |
| |
| func (b *intWithPtrMarshalText) UnmarshalText(data []byte) error { |
| return (*intWithMarshalText)(b).UnmarshalText(data) |
| } |
| |
| type mapStringToStringData struct { |
| Data map[string]string `json:"data"` |
| } |
| |
| type B struct { |
| B bool `json:",string"` |
| } |
| |
| type DoublePtr struct { |
| I **int |
| J **int |
| } |
| |
| var unmarshalTests = []struct { |
| CaseName |
| in string |
| ptr any // new(type) |
| out any |
| err error |
| useNumber bool |
| golden bool |
| disallowUnknownFields bool |
| }{ |
| // basic types |
| {CaseName: Name(""), in: `true`, ptr: new(bool), out: true}, |
| {CaseName: Name(""), in: `1`, ptr: new(int), out: 1}, |
| {CaseName: Name(""), in: `1.2`, ptr: new(float64), out: 1.2}, |
| {CaseName: Name(""), in: `-5`, ptr: new(int16), out: int16(-5)}, |
| {CaseName: Name(""), in: `2`, ptr: new(Number), out: Number("2"), useNumber: true}, |
| {CaseName: Name(""), in: `2`, ptr: new(Number), out: Number("2")}, |
| {CaseName: Name(""), in: `2`, ptr: new(any), out: float64(2.0)}, |
| {CaseName: Name(""), in: `2`, ptr: new(any), out: Number("2"), useNumber: true}, |
| {CaseName: Name(""), in: `"a\u1234"`, ptr: new(string), out: "a\u1234"}, |
| {CaseName: Name(""), in: `"http:\/\/"`, ptr: new(string), out: "http://"}, |
| {CaseName: Name(""), in: `"g-clef: \uD834\uDD1E"`, ptr: new(string), out: "g-clef: \U0001D11E"}, |
| {CaseName: Name(""), in: `"invalid: \uD834x\uDD1E"`, ptr: new(string), out: "invalid: \uFFFDx\uFFFD"}, |
| {CaseName: Name(""), in: "null", ptr: new(any), out: nil}, |
| {CaseName: Name(""), in: `{"X": [1,2,3], "Y": 4}`, ptr: new(T), out: T{Y: 4}, err: &UnmarshalTypeError{"array", reflect.TypeFor[string](), 7, "T", "X"}}, |
| {CaseName: Name(""), in: `{"X": 23}`, ptr: new(T), out: T{}, err: &UnmarshalTypeError{"number", reflect.TypeFor[string](), 8, "T", "X"}}, |
| {CaseName: Name(""), in: `{"x": 1}`, ptr: new(tx), out: tx{}}, |
| {CaseName: Name(""), in: `{"x": 1}`, ptr: new(tx), out: tx{}}, |
| {CaseName: Name(""), in: `{"x": 1}`, ptr: new(tx), err: fmt.Errorf("json: unknown field \"x\""), disallowUnknownFields: true}, |
| {CaseName: Name(""), in: `{"S": 23}`, ptr: new(W), out: W{}, err: &UnmarshalTypeError{"number", reflect.TypeFor[SS](), 0, "W", "S"}}, |
| {CaseName: Name(""), in: `{"F1":1,"F2":2,"F3":3}`, ptr: new(V), out: V{F1: float64(1), F2: int32(2), F3: Number("3")}}, |
| {CaseName: Name(""), in: `{"F1":1,"F2":2,"F3":3}`, ptr: new(V), out: V{F1: Number("1"), F2: int32(2), F3: Number("3")}, useNumber: true}, |
| {CaseName: Name(""), in: `{"k1":1,"k2":"s","k3":[1,2.0,3e-3],"k4":{"kk1":"s","kk2":2}}`, ptr: new(any), out: ifaceNumAsFloat64}, |
| {CaseName: Name(""), in: `{"k1":1,"k2":"s","k3":[1,2.0,3e-3],"k4":{"kk1":"s","kk2":2}}`, ptr: new(any), out: ifaceNumAsNumber, useNumber: true}, |
| |
| // raw values with whitespace |
| {CaseName: Name(""), in: "\n true ", ptr: new(bool), out: true}, |
| {CaseName: Name(""), in: "\t 1 ", ptr: new(int), out: 1}, |
| {CaseName: Name(""), in: "\r 1.2 ", ptr: new(float64), out: 1.2}, |
| {CaseName: Name(""), in: "\t -5 \n", ptr: new(int16), out: int16(-5)}, |
| {CaseName: Name(""), in: "\t \"a\\u1234\" \n", ptr: new(string), out: "a\u1234"}, |
| |
| // Z has a "-" tag. |
| {CaseName: Name(""), in: `{"Y": 1, "Z": 2}`, ptr: new(T), out: T{Y: 1}}, |
| {CaseName: Name(""), in: `{"Y": 1, "Z": 2}`, ptr: new(T), err: fmt.Errorf("json: unknown field \"Z\""), disallowUnknownFields: true}, |
| |
| {CaseName: Name(""), in: `{"alpha": "abc", "alphabet": "xyz"}`, ptr: new(U), out: U{Alphabet: "abc"}}, |
| {CaseName: Name(""), in: `{"alpha": "abc", "alphabet": "xyz"}`, ptr: new(U), err: fmt.Errorf("json: unknown field \"alphabet\""), disallowUnknownFields: true}, |
| {CaseName: Name(""), in: `{"alpha": "abc"}`, ptr: new(U), out: U{Alphabet: "abc"}}, |
| {CaseName: Name(""), in: `{"alphabet": "xyz"}`, ptr: new(U), out: U{}}, |
| {CaseName: Name(""), in: `{"alphabet": "xyz"}`, ptr: new(U), err: fmt.Errorf("json: unknown field \"alphabet\""), disallowUnknownFields: true}, |
| |
| // syntax errors |
| {CaseName: Name(""), in: `{"X": "foo", "Y"}`, err: &SyntaxError{"invalid character '}' after object key", 17}}, |
| {CaseName: Name(""), in: `[1, 2, 3+]`, err: &SyntaxError{"invalid character '+' after array element", 9}}, |
| {CaseName: Name(""), in: `{"X":12x}`, err: &SyntaxError{"invalid character 'x' after object key:value pair", 8}, useNumber: true}, |
| {CaseName: Name(""), in: `[2, 3`, err: &SyntaxError{msg: "unexpected end of JSON input", Offset: 5}}, |
| {CaseName: Name(""), in: `{"F3": -}`, ptr: new(V), out: V{F3: Number("-")}, err: &SyntaxError{msg: "invalid character '}' in numeric literal", Offset: 9}}, |
| |
| // raw value errors |
| {CaseName: Name(""), in: "\x01 42", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}}, |
| {CaseName: Name(""), in: " 42 \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 5}}, |
| {CaseName: Name(""), in: "\x01 true", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}}, |
| {CaseName: Name(""), in: " false \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 8}}, |
| {CaseName: Name(""), in: "\x01 1.2", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}}, |
| {CaseName: Name(""), in: " 3.4 \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 6}}, |
| {CaseName: Name(""), in: "\x01 \"string\"", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}}, |
| {CaseName: Name(""), in: " \"string\" \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 11}}, |
| |
| // array tests |
| {CaseName: Name(""), in: `[1, 2, 3]`, ptr: new([3]int), out: [3]int{1, 2, 3}}, |
| {CaseName: Name(""), in: `[1, 2, 3]`, ptr: new([1]int), out: [1]int{1}}, |
| {CaseName: Name(""), in: `[1, 2, 3]`, ptr: new([5]int), out: [5]int{1, 2, 3, 0, 0}}, |
| {CaseName: Name(""), in: `[1, 2, 3]`, ptr: new(MustNotUnmarshalJSON), err: errors.New("MustNotUnmarshalJSON was used")}, |
| |
| // empty array to interface test |
| {CaseName: Name(""), in: `[]`, ptr: new([]any), out: []any{}}, |
| {CaseName: Name(""), in: `null`, ptr: new([]any), out: []any(nil)}, |
| {CaseName: Name(""), in: `{"T":[]}`, ptr: new(map[string]any), out: map[string]any{"T": []any{}}}, |
| {CaseName: Name(""), in: `{"T":null}`, ptr: new(map[string]any), out: map[string]any{"T": any(nil)}}, |
| |
| // composite tests |
| {CaseName: Name(""), in: allValueIndent, ptr: new(All), out: allValue}, |
| {CaseName: Name(""), in: allValueCompact, ptr: new(All), out: allValue}, |
| {CaseName: Name(""), in: allValueIndent, ptr: new(*All), out: &allValue}, |
| {CaseName: Name(""), in: allValueCompact, ptr: new(*All), out: &allValue}, |
| {CaseName: Name(""), in: pallValueIndent, ptr: new(All), out: pallValue}, |
| {CaseName: Name(""), in: pallValueCompact, ptr: new(All), out: pallValue}, |
| {CaseName: Name(""), in: pallValueIndent, ptr: new(*All), out: &pallValue}, |
| {CaseName: Name(""), in: pallValueCompact, ptr: new(*All), out: &pallValue}, |
| |
| // unmarshal interface test |
| {CaseName: Name(""), in: `{"T":false}`, ptr: new(unmarshaler), out: umtrue}, // use "false" so test will fail if custom unmarshaler is not called |
| {CaseName: Name(""), in: `{"T":false}`, ptr: new(*unmarshaler), out: &umtrue}, |
| {CaseName: Name(""), in: `[{"T":false}]`, ptr: new([]unmarshaler), out: umslice}, |
| {CaseName: Name(""), in: `[{"T":false}]`, ptr: new(*[]unmarshaler), out: &umslice}, |
| {CaseName: Name(""), in: `{"M":{"T":"x:y"}}`, ptr: new(ustruct), out: umstruct}, |
| |
| // UnmarshalText interface test |
| {CaseName: Name(""), in: `"x:y"`, ptr: new(unmarshalerText), out: umtrueXY}, |
| {CaseName: Name(""), in: `"x:y"`, ptr: new(*unmarshalerText), out: &umtrueXY}, |
| {CaseName: Name(""), in: `["x:y"]`, ptr: new([]unmarshalerText), out: umsliceXY}, |
| {CaseName: Name(""), in: `["x:y"]`, ptr: new(*[]unmarshalerText), out: &umsliceXY}, |
| {CaseName: Name(""), in: `{"M":"x:y"}`, ptr: new(ustructText), out: umstructXY}, |
| |
| // integer-keyed map test |
| { |
| CaseName: Name(""), |
| in: `{"-1":"a","0":"b","1":"c"}`, |
| ptr: new(map[int]string), |
| out: map[int]string{-1: "a", 0: "b", 1: "c"}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"0":"a","10":"c","9":"b"}`, |
| ptr: new(map[u8]string), |
| out: map[u8]string{0: "a", 9: "b", 10: "c"}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"-9223372036854775808":"min","9223372036854775807":"max"}`, |
| ptr: new(map[int64]string), |
| out: map[int64]string{math.MinInt64: "min", math.MaxInt64: "max"}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"18446744073709551615":"max"}`, |
| ptr: new(map[uint64]string), |
| out: map[uint64]string{math.MaxUint64: "max"}, |
| }, |
| { |
| CaseName: Name(""), |
| 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. |
| { |
| CaseName: Name(""), |
| in: `{"u2":4}`, |
| ptr: new(map[u8marshal]int), |
| out: map[u8marshal]int{2: 4}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"2":4}`, |
| ptr: new(map[u8marshal]int), |
| err: errMissingU8Prefix, |
| }, |
| |
| // integer-keyed map errors |
| { |
| CaseName: Name(""), |
| in: `{"abc":"abc"}`, |
| ptr: new(map[int]string), |
| err: &UnmarshalTypeError{Value: "number abc", Type: reflect.TypeFor[int](), Offset: 2}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"256":"abc"}`, |
| ptr: new(map[uint8]string), |
| err: &UnmarshalTypeError{Value: "number 256", Type: reflect.TypeFor[uint8](), Offset: 2}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"128":"abc"}`, |
| ptr: new(map[int8]string), |
| err: &UnmarshalTypeError{Value: "number 128", Type: reflect.TypeFor[int8](), Offset: 2}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"-1":"abc"}`, |
| ptr: new(map[uint8]string), |
| err: &UnmarshalTypeError{Value: "number -1", Type: reflect.TypeFor[uint8](), Offset: 2}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"F":{"a":2,"3":4}}`, |
| ptr: new(map[string]map[int]int), |
| err: &UnmarshalTypeError{Value: "number a", Type: reflect.TypeFor[int](), Offset: 7}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"F":{"a":2,"3":4}}`, |
| ptr: new(map[string]map[uint]int), |
| err: &UnmarshalTypeError{Value: "number a", Type: reflect.TypeFor[uint](), Offset: 7}, |
| }, |
| |
| // Map keys can be encoding.TextUnmarshalers. |
| {CaseName: Name(""), 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. |
| {CaseName: Name(""), in: `{"x:y":false,"x:y":true}`, ptr: new(map[unmarshalerText]bool), out: ummapXY}, |
| |
| { |
| CaseName: Name(""), |
| 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, |
| }, |
| }, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"hello": 1}`, |
| ptr: new(Ambig), |
| out: Ambig{First: 1}, |
| }, |
| |
| { |
| CaseName: Name(""), |
| in: `{"X": 1,"Y":2}`, |
| ptr: new(S5), |
| out: S5{S8: S8{S9: S9{Y: 2}}}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"X": 1,"Y":2}`, |
| ptr: new(S5), |
| err: fmt.Errorf("json: unknown field \"X\""), |
| disallowUnknownFields: true, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"X": 1,"Y":2}`, |
| ptr: new(S10), |
| out: S10{S13: S13{S8: S8{S9: S9{Y: 2}}}}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"X": 1,"Y":2}`, |
| ptr: new(S10), |
| err: fmt.Errorf("json: unknown field \"X\""), |
| disallowUnknownFields: true, |
| }, |
| { |
| CaseName: Name(""), |
| 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. |
| { |
| CaseName: Name(""), |
| in: "\"hello\xffworld\"", |
| ptr: new(string), |
| out: "hello\ufffdworld", |
| }, |
| { |
| CaseName: Name(""), |
| in: "\"hello\xc2\xc2world\"", |
| ptr: new(string), |
| out: "hello\ufffd\ufffdworld", |
| }, |
| { |
| CaseName: Name(""), |
| in: "\"hello\xc2\xffworld\"", |
| ptr: new(string), |
| out: "hello\ufffd\ufffdworld", |
| }, |
| { |
| CaseName: Name(""), |
| in: "\"hello\\ud800world\"", |
| ptr: new(string), |
| out: "hello\ufffdworld", |
| }, |
| { |
| CaseName: Name(""), |
| in: "\"hello\\ud800\\ud800world\"", |
| ptr: new(string), |
| out: "hello\ufffd\ufffdworld", |
| }, |
| { |
| CaseName: Name(""), |
| in: "\"hello\\ud800\\ud800world\"", |
| ptr: new(string), |
| out: "hello\ufffd\ufffdworld", |
| }, |
| { |
| CaseName: Name(""), |
| 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. |
| { |
| CaseName: Name(""), |
| 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 |
| { |
| CaseName: Name(""), |
| in: `{"2009-11-10T23:00:00Z": "hello world"}`, |
| ptr: new(map[Point]string), |
| err: &UnmarshalTypeError{Value: "object", Type: reflect.TypeFor[map[Point]string](), Offset: 1}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"asdf": "hello world"}`, |
| ptr: new(map[unmarshaler]string), |
| err: &UnmarshalTypeError{Value: "object", Type: reflect.TypeFor[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. |
| { |
| CaseName: Name(""), |
| in: `"AQID"`, |
| ptr: new([]byteWithMarshalJSON), |
| out: []byteWithMarshalJSON{1, 2, 3}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `["Z01","Z02","Z03"]`, |
| ptr: new([]byteWithMarshalJSON), |
| out: []byteWithMarshalJSON{1, 2, 3}, |
| golden: true, |
| }, |
| { |
| CaseName: Name(""), |
| in: `"AQID"`, |
| ptr: new([]byteWithMarshalText), |
| out: []byteWithMarshalText{1, 2, 3}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `["Z01","Z02","Z03"]`, |
| ptr: new([]byteWithMarshalText), |
| out: []byteWithMarshalText{1, 2, 3}, |
| golden: true, |
| }, |
| { |
| CaseName: Name(""), |
| in: `"AQID"`, |
| ptr: new([]byteWithPtrMarshalJSON), |
| out: []byteWithPtrMarshalJSON{1, 2, 3}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `["Z01","Z02","Z03"]`, |
| ptr: new([]byteWithPtrMarshalJSON), |
| out: []byteWithPtrMarshalJSON{1, 2, 3}, |
| golden: true, |
| }, |
| { |
| CaseName: Name(""), |
| in: `"AQID"`, |
| ptr: new([]byteWithPtrMarshalText), |
| out: []byteWithPtrMarshalText{1, 2, 3}, |
| }, |
| { |
| CaseName: Name(""), |
| 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 |
| { |
| CaseName: Name(""), |
| in: `["Z01","Z02","Z03"]`, |
| ptr: new([]intWithMarshalJSON), |
| out: []intWithMarshalJSON{1, 2, 3}, |
| golden: true, |
| }, |
| { |
| CaseName: Name(""), |
| in: `["Z01","Z02","Z03"]`, |
| ptr: new([]intWithMarshalText), |
| out: []intWithMarshalText{1, 2, 3}, |
| golden: true, |
| }, |
| { |
| CaseName: Name(""), |
| in: `["Z01","Z02","Z03"]`, |
| ptr: new([]intWithPtrMarshalJSON), |
| out: []intWithPtrMarshalJSON{1, 2, 3}, |
| golden: true, |
| }, |
| { |
| CaseName: Name(""), |
| in: `["Z01","Z02","Z03"]`, |
| ptr: new([]intWithPtrMarshalText), |
| out: []intWithPtrMarshalText{1, 2, 3}, |
| golden: true, |
| }, |
| |
| {CaseName: Name(""), in: `0.000001`, ptr: new(float64), out: 0.000001, golden: true}, |
| {CaseName: Name(""), in: `1e-7`, ptr: new(float64), out: 1e-7, golden: true}, |
| {CaseName: Name(""), in: `100000000000000000000`, ptr: new(float64), out: 100000000000000000000.0, golden: true}, |
| {CaseName: Name(""), in: `1e+21`, ptr: new(float64), out: 1e21, golden: true}, |
| {CaseName: Name(""), in: `-0.000001`, ptr: new(float64), out: -0.000001, golden: true}, |
| {CaseName: Name(""), in: `-1e-7`, ptr: new(float64), out: -1e-7, golden: true}, |
| {CaseName: Name(""), in: `-100000000000000000000`, ptr: new(float64), out: -100000000000000000000.0, golden: true}, |
| {CaseName: Name(""), in: `-1e+21`, ptr: new(float64), out: -1e21, golden: true}, |
| {CaseName: Name(""), in: `999999999999999900000`, ptr: new(float64), out: 999999999999999900000.0, golden: true}, |
| {CaseName: Name(""), in: `9007199254740992`, ptr: new(float64), out: 9007199254740992.0, golden: true}, |
| {CaseName: Name(""), in: `9007199254740993`, ptr: new(float64), out: 9007199254740992.0, golden: false}, |
| |
| { |
| CaseName: Name(""), |
| in: `{"V": {"F2": "hello"}}`, |
| ptr: new(VOuter), |
| err: &UnmarshalTypeError{ |
| Value: "string", |
| Struct: "V", |
| Field: "V.F2", |
| Type: reflect.TypeFor[int32](), |
| Offset: 20, |
| }, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"V": {"F4": {}, "F2": "hello"}}`, |
| ptr: new(VOuter), |
| err: &UnmarshalTypeError{ |
| Value: "string", |
| Struct: "V", |
| Field: "V.F2", |
| Type: reflect.TypeFor[int32](), |
| Offset: 30, |
| }, |
| }, |
| |
| // issue 15146. |
| // invalid inputs in wrongStringTests below. |
| {CaseName: Name(""), in: `{"B":"true"}`, ptr: new(B), out: B{true}, golden: true}, |
| {CaseName: Name(""), in: `{"B":"false"}`, ptr: new(B), out: B{false}, golden: true}, |
| {CaseName: Name(""), in: `{"B": "maybe"}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal "maybe" into bool`)}, |
| {CaseName: Name(""), in: `{"B": "tru"}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal "tru" into bool`)}, |
| {CaseName: Name(""), in: `{"B": "False"}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal "False" into bool`)}, |
| {CaseName: Name(""), in: `{"B": "null"}`, ptr: new(B), out: B{false}}, |
| {CaseName: Name(""), in: `{"B": "nul"}`, ptr: new(B), err: errors.New(`json: invalid use of ,string struct tag, trying to unmarshal "nul" into bool`)}, |
| {CaseName: Name(""), 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 |
| { |
| CaseName: Name(""), |
| 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, |
| }, |
| { |
| CaseName: Name(""), |
| 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 |
| { |
| CaseName: Name(""), |
| in: `{"data":{"test1": "bob", "test2": 123}}`, |
| ptr: new(mapStringToStringData), |
| err: &UnmarshalTypeError{Value: "number", Type: reflect.TypeFor[string](), Offset: 37, Struct: "mapStringToStringData", Field: "data"}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"data":{"test1": 123, "test2": "bob"}}`, |
| ptr: new(mapStringToStringData), |
| err: &UnmarshalTypeError{Value: "number", Type: reflect.TypeFor[string](), Offset: 21, Struct: "mapStringToStringData", Field: "data"}, |
| }, |
| |
| // trying to decode JSON arrays or objects via TextUnmarshaler |
| { |
| CaseName: Name(""), |
| in: `[1, 2, 3]`, |
| ptr: new(MustNotUnmarshalText), |
| err: &UnmarshalTypeError{Value: "array", Type: reflect.TypeFor[*MustNotUnmarshalText](), Offset: 1}, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"foo": "bar"}`, |
| ptr: new(MustNotUnmarshalText), |
| err: &UnmarshalTypeError{Value: "object", Type: reflect.TypeFor[*MustNotUnmarshalText](), Offset: 1}, |
| }, |
| // #22369 |
| { |
| CaseName: Name(""), |
| in: `{"PP": {"T": {"Y": "bad-type"}}}`, |
| ptr: new(P), |
| err: &UnmarshalTypeError{ |
| Value: "string", |
| Struct: "T", |
| Field: "PP.T.Y", |
| Type: reflect.TypeFor[int](), |
| Offset: 29, |
| }, |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"Ts": [{"Y": 1}, {"Y": 2}, {"Y": "bad-type"}]}`, |
| ptr: new(PP), |
| err: &UnmarshalTypeError{ |
| Value: "string", |
| Struct: "T", |
| Field: "Ts.Y", |
| Type: reflect.TypeFor[int](), |
| Offset: 29, |
| }, |
| }, |
| // #14702 |
| { |
| CaseName: Name(""), |
| in: `invalid`, |
| ptr: new(Number), |
| err: &SyntaxError{ |
| msg: "invalid character 'i' looking for beginning of value", |
| Offset: 1, |
| }, |
| }, |
| { |
| CaseName: Name(""), |
| in: `"invalid"`, |
| ptr: new(Number), |
| err: fmt.Errorf("json: invalid number literal, trying to unmarshal %q into Number", `"invalid"`), |
| }, |
| { |
| CaseName: Name(""), |
| in: `{"A":"invalid"}`, |
| ptr: new(struct{ A Number }), |
| err: fmt.Errorf("json: invalid number literal, trying to unmarshal %q into Number", `"invalid"`), |
| }, |
| { |
| CaseName: Name(""), |
| 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`), |
| }, |
| { |
| CaseName: Name(""), |
| 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 error: %v", err) |
| } |
| if string(b) != allValueCompact { |
| t.Errorf("Marshal:") |
| diff(t, b, []byte(allValueCompact)) |
| return |
| } |
| |
| b, err = Marshal(pallValue) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| if string(b) != pallValueCompact { |
| t.Errorf("Marshal:") |
| diff(t, b, []byte(pallValueCompact)) |
| return |
| } |
| } |
| |
| func TestMarshalInvalidUTF8(t *testing.T) { |
| tests := []struct { |
| CaseName |
| in string |
| want string |
| }{ |
| {Name(""), "hello\xffworld", `"hello\ufffdworld"`}, |
| {Name(""), "", `""`}, |
| {Name(""), "\xff", `"\ufffd"`}, |
| {Name(""), "\xff\xff", `"\ufffd\ufffd"`}, |
| {Name(""), "a\xffb", `"a\ufffdb"`}, |
| {Name(""), "\xe6\x97\xa5\xe6\x9c\xac\xff\xaa\x9e", `"日本\ufffd\ufffd\ufffd"`}, |
| } |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| got, err := Marshal(tt.in) |
| if string(got) != tt.want || err != nil { |
| t.Errorf("%s: Marshal(%q):\n\tgot: (%q, %v)\n\twant: (%q, nil)", tt.Where, tt.in, got, err, tt.want) |
| } |
| }) |
| } |
| } |
| |
| func TestMarshalNumberZeroVal(t *testing.T) { |
| var n Number |
| out, err := Marshal(n) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| got := string(out) |
| if got != "0" { |
| t.Fatalf("Marshal: got %s, want 0", got) |
| } |
| } |
| |
| 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, |
| }, |
| } |
| got, err := Marshal(top) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", 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(got) != want { |
| t.Errorf("Marshal:\n\tgot: %s\n\twant: %s", got, want) |
| } |
| } |
| |
| func equalError(a, b error) bool { |
| if a == nil || b == nil { |
| return a == nil && b == nil |
| } |
| return a.Error() == b.Error() |
| } |
| |
| func TestUnmarshal(t *testing.T) { |
| for _, tt := range unmarshalTests { |
| t.Run(tt.Name, func(t *testing.T) { |
| in := []byte(tt.in) |
| var scan scanner |
| if err := checkValid(in, &scan); err != nil { |
| if !equalError(err, tt.err) { |
| t.Fatalf("%s: checkValid error: %#v", tt.Where, err) |
| } |
| } |
| if tt.ptr == nil { |
| return |
| } |
| |
| typ := reflect.TypeOf(tt.ptr) |
| if typ.Kind() != reflect.Pointer { |
| t.Fatalf("%s: unmarshalTest.ptr %T is not a pointer type", tt.Where, tt.ptr) |
| } |
| 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.Fatalf("%s: unmarshalTest.ptr %#v is not a pointer to a zero value", tt.Where, tt.ptr) |
| } |
| |
| 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.Fatalf("%s: Decode error:\n\tgot: %v\n\twant: %v", tt.Where, err, tt.err) |
| } else if err != nil { |
| return |
| } |
| if got := v.Elem().Interface(); !reflect.DeepEqual(got, tt.out) { |
| gotJSON, _ := Marshal(got) |
| wantJSON, _ := Marshal(tt.out) |
| t.Fatalf("%s: Decode:\n\tgot: %#+v\n\twant: %#+v\n\n\tgotJSON: %s\n\twantJSON: %s", tt.Where, got, tt.out, gotJSON, wantJSON) |
| } |
| |
| // Check round trip also decodes correctly. |
| if tt.err == nil { |
| enc, err := Marshal(v.Interface()) |
| if err != nil { |
| t.Fatalf("%s: Marshal error after roundtrip: %v", tt.Where, err) |
| } |
| if tt.golden && !bytes.Equal(enc, in) { |
| t.Errorf("%s: Marshal:\n\tgot: %s\n\twant: %s", tt.Where, 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.Fatalf("%s: Decode(%#q) error after roundtrip: %v", tt.Where, enc, err) |
| } |
| if !reflect.DeepEqual(v.Elem().Interface(), vv.Elem().Interface()) { |
| t.Fatalf("%s: Decode:\n\tgot: %#+v\n\twant: %#+v\n\n\tgotJSON: %s\n\twantJSON: %s", |
| tt.Where, v.Elem().Interface(), vv.Elem().Interface(), |
| stripWhitespace(string(enc)), stripWhitespace(string(in))) |
| } |
| } |
| }) |
| } |
| } |
| |
| func TestUnmarshalMarshal(t *testing.T) { |
| initBig() |
| var v any |
| if err := Unmarshal(jsonBig, &v); err != nil { |
| t.Fatalf("Unmarshal error: %v", err) |
| } |
| b, err := Marshal(v) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| if !bytes.Equal(jsonBig, b) { |
| t.Errorf("Marshal:") |
| diff(t, b, jsonBig) |
| return |
| } |
| } |
| |
| // Independent of Decode, basic coverage of the accessors in Number |
| func TestNumberAccessors(t *testing.T) { |
| tests := []struct { |
| CaseName |
| in string |
| i int64 |
| intErr string |
| f float64 |
| floatErr string |
| }{ |
| {CaseName: Name(""), in: "-1.23e1", intErr: "strconv.ParseInt: parsing \"-1.23e1\": invalid syntax", f: -1.23e1}, |
| {CaseName: Name(""), in: "-12", i: -12, f: -12.0}, |
| {CaseName: Name(""), in: "1e1000", intErr: "strconv.ParseInt: parsing \"1e1000\": invalid syntax", floatErr: "strconv.ParseFloat: parsing \"1e1000\": value out of range"}, |
| } |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| n := Number(tt.in) |
| if got := n.String(); got != tt.in { |
| t.Errorf("%s: Number(%q).String() = %s, want %s", tt.Where, tt.in, got, tt.in) |
| } |
| if i, err := n.Int64(); err == nil && tt.intErr == "" && i != tt.i { |
| t.Errorf("%s: Number(%q).Int64() = %d, want %d", tt.Where, tt.in, i, tt.i) |
| } else if (err == nil && tt.intErr != "") || (err != nil && err.Error() != tt.intErr) { |
| t.Errorf("%s: Number(%q).Int64() error:\n\tgot: %v\n\twant: %v", tt.Where, tt.in, err, tt.intErr) |
| } |
| if f, err := n.Float64(); err == nil && tt.floatErr == "" && f != tt.f { |
| t.Errorf("%s: Number(%q).Float64() = %g, want %g", tt.Where, tt.in, f, tt.f) |
| } else if (err == nil && tt.floatErr != "") || (err != nil && err.Error() != tt.floatErr) { |
| t.Errorf("%s: Number(%q).Float64() error:\n\tgot %v\n\twant: %v", tt.Where, tt.in, err, tt.floatErr) |
| } |
| }) |
| } |
| } |
| |
| 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 error: %v", err) |
| } |
| var s1 []byte |
| if err := Unmarshal(b, &s1); err != nil { |
| t.Fatalf("Unmarshal error: %v", err) |
| } |
| if !bytes.Equal(s0, s1) { |
| t.Errorf("Marshal:") |
| diff(t, s0, s1) |
| } |
| } |
| |
| type Xint struct { |
| X int |
| } |
| |
| func TestUnmarshalInterface(t *testing.T) { |
| var xint Xint |
| var i any = &xint |
| if err := Unmarshal([]byte(`{"X":1}`), &i); err != nil { |
| t.Fatalf("Unmarshal error: %v", err) |
| } |
| if xint.X != 1 { |
| t.Fatalf("xint.X = %d, want 1", xint.X) |
| } |
| } |
| |
| 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("xint.X = %d, want 1", xint.X) |
| } |
| } |
| |
| func TestEscape(t *testing.T) { |
| const input = `"foobar"<html>` + " [\u2028 \u2029]" |
| const want = `"\"foobar\"\u003chtml\u003e [\u2028 \u2029]"` |
| got, err := Marshal(input) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| if string(got) != want { |
| t.Errorf("Marshal(%#q):\n\tgot: %s\n\twant: %s", input, got, want) |
| } |
| } |
| |
| // 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) { |
| // WrongString is a struct that's misusing the ,string modifier. |
| type WrongString struct { |
| Message string `json:"result,string"` |
| } |
| tests := []struct { |
| CaseName |
| in, err string |
| }{ |
| {Name(""), `{"result":"x"}`, `json: invalid use of ,string struct tag, trying to unmarshal "x" into string`}, |
| {Name(""), `{"result":"foo"}`, `json: invalid use of ,string struct tag, trying to unmarshal "foo" into string`}, |
| {Name(""), `{"result":"123"}`, `json: invalid use of ,string struct tag, trying to unmarshal "123" into string`}, |
| {Name(""), `{"result":123}`, `json: invalid use of ,string struct tag, trying to unmarshal unquoted value into string`}, |
| {Name(""), `{"result":"\""}`, `json: invalid use of ,string struct tag, trying to unmarshal "\"" into string`}, |
| {Name(""), `{"result":"\"foo"}`, `json: invalid use of ,string struct tag, trying to unmarshal "\"foo" into string`}, |
| } |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| r := strings.NewReader(tt.in) |
| var s WrongString |
| err := NewDecoder(r).Decode(&s) |
| got := fmt.Sprintf("%v", err) |
| if got != tt.err { |
| t.Errorf("%s: Decode error:\n\tgot: %s\n\twant: %s", tt.Where, got, tt.err) |
| } |
| }) |
| } |
| } |
| |
| 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 any |
| PInterface *any |
| |
| 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 = stripWhitespace(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 = stripWhitespace(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 error: %v", err) |
| } |
| if !reflect.DeepEqual(got, want) { |
| t.Errorf("Unmarsha:\n\tgot: %+v\n\twant: %+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 got T2 |
| switch err := dec.Decode(&got); { |
| case err == nil: |
| t.Fatalf("Decode error: got nil, want non-nil") |
| case got.Number1 != 1: |
| t.Fatalf("Decode: got.Number1 = %d, want 1", got.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 |
| switch err := Unmarshal(data, &s); { |
| case err != nil: |
| t.Fatalf("Unmarshal error: %v", err) |
| case s.B != 1: |
| t.Fatalf("Unmarshal: s.B = %d, want 1", s.B) |
| case s.C != nil: |
| t.Fatalf("Unmarshal: s.C = %d, want non-nil", 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 |
| } |
| |
| func TestInterfaceSet(t *testing.T) { |
| tests := []struct { |
| CaseName |
| pre any |
| json string |
| post any |
| }{ |
| {Name(""), "foo", `"bar"`, "bar"}, |
| {Name(""), "foo", `2`, 2.0}, |
| {Name(""), "foo", `true`, true}, |
| {Name(""), "foo", `null`, nil}, |
| |
| {Name(""), nil, `null`, nil}, |
| {Name(""), new(int), `null`, nil}, |
| {Name(""), (*int)(nil), `null`, nil}, |
| {Name(""), new(*int), `null`, new(*int)}, |
| {Name(""), (**int)(nil), `null`, nil}, |
| {Name(""), intp(1), `null`, nil}, |
| {Name(""), intpp(nil), `null`, intpp(nil)}, |
| {Name(""), intpp(intp(1)), `null`, intpp(nil)}, |
| } |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| b := struct{ X any }{tt.pre} |
| blob := `{"X":` + tt.json + `}` |
| if err := Unmarshal([]byte(blob), &b); err != nil { |
| t.Fatalf("%s: Unmarshal(%#q) error: %v", tt.Where, blob, err) |
| } |
| if !reflect.DeepEqual(b.X, tt.post) { |
| t.Errorf("%s: Unmarshal(%#q):\n\tpre.X: %#v\n\tgot.X: %#v\n\twant.X: %#v", tt.Where, 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 any |
| |
| 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 |
| want := map[stringKind]int{"foo": 42} |
| data, err := Marshal(want) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| var got map[stringKind]int |
| err = Unmarshal(data, &got) |
| if err != nil { |
| t.Fatalf("Unmarshal error: %v", err) |
| } |
| if !reflect.DeepEqual(got, want) { |
| t.Fatalf("Marshal/Unmarshal mismatch:\n\tgot: %v\n\twant: %v", got, want) |
| } |
| } |
| |
| // Custom types with []byte as underlying type could not be marshaled |
| // and then unmarshaled. |
| // Issue 8962. |
| func TestByteKind(t *testing.T) { |
| type byteKind []byte |
| want := byteKind("hello") |
| data, err := Marshal(want) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| var got byteKind |
| err = Unmarshal(data, &got) |
| if err != nil { |
| t.Fatalf("Unmarshal error: %v", err) |
| } |
| if !slices.Equal(got, want) { |
| t.Fatalf("Marshal/Unmarshal mismatch:\n\tgot: %v\n\twant: %v", got, want) |
| } |
| } |
| |
| // The fix for issue 8962 introduced a regression. |
| // Issue 12921. |
| func TestSliceOfCustomByte(t *testing.T) { |
| type Uint8 uint8 |
| want := []Uint8("hello") |
| data, err := Marshal(want) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| var got []Uint8 |
| err = Unmarshal(data, &got) |
| if err != nil { |
| t.Fatalf("Unmarshal error: %v", err) |
| } |
| if !slices.Equal(got, want) { |
| t.Fatalf("Marshal/Unmarshal mismatch:\n\tgot: %v\n\twant: %v", got, want) |
| } |
| } |
| |
| func TestUnmarshalTypeError(t *testing.T) { |
| tests := []struct { |
| CaseName |
| dest any |
| in string |
| }{ |
| {Name(""), new(string), `{"user": "name"}`}, // issue 4628. |
| {Name(""), new(error), `{}`}, // issue 4222 |
| {Name(""), new(error), `[]`}, |
| {Name(""), new(error), `""`}, |
| {Name(""), new(error), `123`}, |
| {Name(""), new(error), `true`}, |
| } |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| err := Unmarshal([]byte(tt.in), tt.dest) |
| if _, ok := err.(*UnmarshalTypeError); !ok { |
| t.Errorf("%s: Unmarshal(%#q, %T):\n\tgot: %T\n\twant: %T", |
| tt.Where, tt.in, tt.dest, err, new(UnmarshalTypeError)) |
| } |
| }) |
| } |
| } |
| |
| func TestUnmarshalSyntax(t *testing.T) { |
| var x any |
| tests := []struct { |
| CaseName |
| in string |
| }{ |
| {Name(""), "tru"}, |
| {Name(""), "fals"}, |
| {Name(""), "nul"}, |
| {Name(""), "123e"}, |
| {Name(""), `"hello`}, |
| {Name(""), `[1,2,3`}, |
| {Name(""), `{"key":1`}, |
| {Name(""), `{"key":1,`}, |
| } |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| err := Unmarshal([]byte(tt.in), &x) |
| if _, ok := err.(*SyntaxError); !ok { |
| t.Errorf("%s: Unmarshal(%#q, any):\n\tgot: %T\n\twant: %T", |
| tt.Where, tt.in, err, new(SyntaxError)) |
| } |
| }) |
| } |
| } |
| |
| // Test handling of unexported fields that should be ignored. |
| // Issue 4660 |
| type unexportedFields struct { |
| Name string |
| m map[string]any `json:"-"` |
| m2 map[string]any `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("Unmarshal error: %v", err) |
| } |
| if !reflect.DeepEqual(out, want) { |
| t.Errorf("Unmarshal:\n\tgot: %+v\n\twant: %+v", 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 |
| switch err := Unmarshal([]byte(`"0000-00-00T00:00:00Z"`), &t3); { |
| case err == nil: |
| t.Fatalf("Unmarshal error: got nil, want non-nil") |
| case !strings.Contains(err.Error(), "range"): |
| t.Errorf("Unmarshal error:\n\tgot: %v\n\twant: out of range", 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]any |
| |
| err := Unmarshal([]byte(json), &dest) |
| if err != nil { |
| t.Errorf("Unmarshal error: %v", 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) { |
| // Values here change, cannot reuse table across runs. |
| tests := []struct { |
| CaseName |
| in string |
| ptr any |
| out any |
| }{{ |
| CaseName: Name(""), |
| 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}, |
| }, { |
| CaseName: Name(""), |
| in: `{"X": 1, "Y": 2}`, |
| ptr: &map[string]any{"X": float32(3), "Y": int16(4), "Z": 1.5}, |
| out: &map[string]any{"X": float64(1), "Y": float64(2), "Z": 1.5}, |
| }, { |
| CaseName: Name(""), |
| in: `[2]`, |
| ptr: &[]int{1}, |
| out: &[]int{2}, |
| }, { |
| CaseName: Name(""), |
| in: `[2, 3]`, |
| ptr: &[]int{1}, |
| out: &[]int{2, 3}, |
| }, { |
| CaseName: Name(""), |
| in: `[2, 3]`, |
| ptr: &[...]int{1}, |
| out: &[...]int{2}, |
| }, { |
| CaseName: Name(""), |
| in: `[3]`, |
| ptr: &[...]int{1, 2}, |
| out: &[...]int{3, 0}, |
| }} |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| ptrstr := fmt.Sprintf("%v", tt.ptr) |
| err := Unmarshal([]byte(tt.in), tt.ptr) // tt.ptr edited here |
| if err != nil { |
| t.Errorf("%s: Unmarshal error: %v", tt.Where, err) |
| } |
| if !reflect.DeepEqual(tt.ptr, tt.out) { |
| t.Errorf("%s: Unmarshal(%#q, %T):\n\tgot: %v\n\twant: %v", tt.Where, tt.in, ptrstr, tt.ptr, tt.out) |
| } |
| }) |
| } |
| } |
| |
| func TestInvalidUnmarshal(t *testing.T) { |
| buf := []byte(`{"a":"1"}`) |
| tests := []struct { |
| CaseName |
| v any |
| want string |
| }{ |
| {Name(""), nil, "json: Unmarshal(nil)"}, |
| {Name(""), struct{}{}, "json: Unmarshal(non-pointer struct {})"}, |
| {Name(""), (*int)(nil), "json: Unmarshal(nil *int)"}, |
| } |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| err := Unmarshal(buf, tt.v) |
| if err == nil { |
| t.Fatalf("%s: Unmarshal error: got nil, want non-nil", tt.Where) |
| } |
| if got := err.Error(); got != tt.want { |
| t.Errorf("%s: Unmarshal error:\n\tgot: %s\n\twant: %s", tt.Where, got, tt.want) |
| } |
| }) |
| } |
| } |
| |
| func TestInvalidUnmarshalText(t *testing.T) { |
| buf := []byte(`123`) |
| tests := []struct { |
| CaseName |
| v any |
| want string |
| }{ |
| {Name(""), nil, "json: Unmarshal(nil)"}, |
| {Name(""), struct{}{}, "json: Unmarshal(non-pointer struct {})"}, |
| {Name(""), (*int)(nil), "json: Unmarshal(nil *int)"}, |
| {Name(""), new(net.IP), "json: cannot unmarshal number into Go value of type *net.IP"}, |
| } |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| err := Unmarshal(buf, tt.v) |
| if err == nil { |
| t.Fatalf("%s: Unmarshal error: got nil, want non-nil", tt.Where) |
| } |
| if got := err.Error(); got != tt.want { |
| t.Errorf("%s: Unmarshal error:\n\tgot: %s\n\twant: %s", tt.Where, 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 any `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 error: %v", err) |
| } |
| |
| err = Unmarshal(data, &item) |
| if err != nil { |
| t.Fatalf("Unmarshal error: %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 { |
| CaseName |
| in string |
| ptr any |
| out any |
| err error |
| }{{ |
| // Error since we cannot set S1.embed1, but still able to set S1.R. |
| CaseName: Name(""), |
| 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. |
| CaseName: Name(""), |
| in: `{"Q":1}`, |
| ptr: new(S2), |
| out: &S2{Q: 1}, |
| }, { |
| // No issue with non-pointer variant. |
| CaseName: Name(""), |
| 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. |
| CaseName: Name(""), |
| in: `{"R":2}`, |
| ptr: new(S4), |
| out: new(S4), |
| }, { |
| // Error since we cannot set S5.embed1, but still able to set S5.R. |
| CaseName: Name(""), |
| 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. |
| CaseName: Name(""), |
| 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. |
| CaseName: Name(""), |
| in: `{"embed1": {"Q": 1}, "Q": 2}`, |
| ptr: new(S7), |
| out: &S7{embed1{1}, embed2{2}}, |
| }, { |
| // Issue 24153, similar to the S7 case. |
| CaseName: Name(""), |
| 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. |
| CaseName: Name(""), |
| in: `{"embed": {}}`, |
| ptr: new(S9), |
| out: &S9{}, |
| }} |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| err := Unmarshal([]byte(tt.in), tt.ptr) |
| if !equalError(err, tt.err) { |
| t.Errorf("%s: Unmarshal error:\n\tgot: %v\n\twant: %v", tt.Where, err, tt.err) |
| } |
| if !reflect.DeepEqual(tt.ptr, tt.out) { |
| t.Errorf("%s: Unmarshal:\n\tgot: %#+v\n\twant: %#+v", tt.Where, tt.ptr, tt.out) |
| } |
| }) |
| } |
| } |
| |
| func TestUnmarshalErrorAfterMultipleJSON(t *testing.T) { |
| tests := []struct { |
| CaseName |
| in string |
| err error |
| }{{ |
| CaseName: Name(""), |
| in: `1 false null :`, |
| err: &SyntaxError{"invalid character ':' looking for beginning of value", 14}, |
| }, { |
| CaseName: Name(""), |
| in: `1 [] [,]`, |
| err: &SyntaxError{"invalid character ',' looking for beginning of value", 7}, |
| }, { |
| CaseName: Name(""), |
| in: `1 [] [true:]`, |
| err: &SyntaxError{"invalid character ':' after array element", 11}, |
| }, { |
| CaseName: Name(""), |
| in: `1 {} {"x"=}`, |
| err: &SyntaxError{"invalid character '=' after object key", 14}, |
| }, { |
| CaseName: Name(""), |
| in: `falsetruenul#`, |
| err: &SyntaxError{"invalid character '#' in literal null (expecting 'l')", 13}, |
| }} |
| for _, tt := range tests { |
| t.Run(tt.Name, func(t *testing.T) { |
| dec := NewDecoder(strings.NewReader(tt.in)) |
| var err error |
| for err == nil { |
| var v any |
| err = dec.Decode(&v) |
| } |
| if !reflect.DeepEqual(err, tt.err) { |
| t.Errorf("%s: Decode error:\n\tgot: %v\n\twant: %v", tt.Where, 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 any |
| v = &v |
| data := []byte(`{"a": "b"}`) |
| |
| if err := Unmarshal(data, v); err != nil { |
| t.Fatalf("Unmarshal error: %v", 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 error: %v", err) |
| } |
| |
| if _, ok := p["foo"]; !ok { |
| t.Errorf(`key "foo" missing 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 error: %v", err) |
| } |
| if _, ok := p["开源"]; !ok { |
| t.Errorf(`key "开源" missing in map: %v`, p) |
| } |
| |
| // See golang.org/issues/38126. |
| type T struct { |
| F1 string `json:"F1,string"` |
| } |
| wantT := T{"aaa\tbbb"} |
| |
| b, err := Marshal(wantT) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| var gotT T |
| if err := Unmarshal(b, &gotT); err != nil { |
| t.Fatalf("Unmarshal error: %v", err) |
| } |
| if gotT != wantT { |
| t.Errorf("Marshal/Unmarshal roundtrip:\n\tgot: %q\n\twant: %q", gotT, wantT) |
| } |
| |
| // See golang.org/issues/39555. |
| input := map[textUnmarshalerString]string{"FOO": "", `"`: ""} |
| |
| encoded, err := Marshal(input) |
| if err != nil { |
| t.Fatalf("Marshal error: %v", err) |
| } |
| var got map[textUnmarshalerString]string |
| if err := Unmarshal(encoded, &got); err != nil { |
| t.Fatalf("Unmarshal error: %v", err) |
| } |
| want := map[textUnmarshalerString]string{"foo": "", `"`: ""} |
| if !reflect.DeepEqual(got, want) { |
| t.Errorf("Marshal/Unmarshal roundtrip:\n\tgot: %q\n\twant: %q", gotT, wantT) |
| } |
| } |
| |
| func TestUnmarshalMaxDepth(t *testing.T) { |
| tests := []struct { |
| CaseName |
| data string |
| errMaxDepth bool |
| }{{ |
| CaseName: Name("ArrayUnderMaxNestingDepth"), |
| data: `{"a":` + strings.Repeat(`[`, 10000-1) + strings.Repeat(`]`, 10000-1) + `}`, |
| errMaxDepth: false, |
| }, { |
| CaseName: Name("ArrayOverMaxNestingDepth"), |
| data: `{"a":` + strings.Repeat(`[`, 10000) + strings.Repeat(`]`, 10000) + `}`, |
| errMaxDepth: true, |
| }, { |
| CaseName: Name("ArrayOverStackDepth"), |
| data: `{"a":` + strings.Repeat(`[`, 3000000) + strings.Repeat(`]`, 3000000) + `}`, |
| errMaxDepth: true, |
| }, { |
| CaseName: Name("ObjectUnderMaxNestingDepth"), |
| data: `{"a":` + strings.Repeat(`{"a":`, 10000-1) + `0` + strings.Repeat(`}`, 10000-1) + `}`, |
| errMaxDepth: false, |
| }, { |
| CaseName: Name("ObjectOverMaxNestingDepth"), |
| data: `{"a":` + strings.Repeat(`{"a":`, 10000) + `0` + strings.Repeat(`}`, 10000) + `}`, |
| errMaxDepth: true, |
| }, { |
| CaseName: Name("ObjectOverStackDepth"), |
| data: `{"a":` + strings.Repeat(`{"a":`, 3000000) + `0` + strings.Repeat(`}`, 3000000) + `}`, |
| errMaxDepth: true, |
| }} |
| |
| targets := []struct { |
| CaseName |
| newValue func() any |
| }{{ |
| CaseName: Name("unstructured"), |
| newValue: func() any { |
| var v any |
| return &v |
| }, |
| }, { |
| CaseName: Name("typed named field"), |
| newValue: func() any { |
| v := struct { |
| A any `json:"a"` |
| }{} |
| return &v |
| }, |
| }, { |
| CaseName: Name("typed missing field"), |
| newValue: func() any { |
| v := struct { |
| B any `json:"b"` |
| }{} |
| return &v |
| }, |
| }, { |
| CaseName: Name("custom unmarshaler"), |
| newValue: func() any { |
| v := unmarshaler{} |
| return &v |
| }, |
| }} |
| |
| for _, tt := range tests { |
| for _, target := range targets { |
| t.Run(target.Name+"-"+tt.Name, func(t *testing.T) { |
| err := Unmarshal([]byte(tt.data), target.newValue()) |
| if !tt.errMaxDepth { |
| if err != nil { |
| t.Errorf("%s: %s: Unmarshal error: %v", tt.Where, target.Where, err) |
| } |
| } else { |
| if err == nil || !strings.Contains(err.Error(), "exceeded max depth") { |
| t.Errorf("%s: %s: Unmarshal error:\n\tgot: %v\n\twant: exceeded max depth", tt.Where, target.Where, err) |
| } |
| } |
| }) |
| } |
| } |
| } |
