From 234e0836f1040f7724251b4120a2351bcbf64131 Mon Sep 17 00:00:00 2001 From: Luke Shumaker Date: Sat, 13 Aug 2022 15:11:17 -0600 Subject: set up as a separate repo --- borrowed_decode_test.go | 2590 +++++++++++++++++++++++++++++++++++++++++++++++ 1 file changed, 2590 insertions(+) create mode 100644 borrowed_decode_test.go (limited to 'borrowed_decode_test.go') diff --git a/borrowed_decode_test.go b/borrowed_decode_test.go new file mode 100644 index 0000000..a1fd695 --- /dev/null +++ b/borrowed_decode_test.go @@ -0,0 +1,2590 @@ +// 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 lowmemjson // MODIFIED + +import ( + "bytes" + "encoding" + "errors" + "fmt" + "image" + "io" // MODIFIED + "math" + "math/big" + "net" + "reflect" + "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.TypeOf(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 unmarshalTest struct { + in string + ptr any // new(type) + out any + err error + useNumber bool + golden bool + disallowUnknownFields bool +} + +type B struct { + B bool `json:",string"` +} + +type DoublePtr struct { + I **int + J **int +} + +var unmarshalTests = []unmarshalTest{ + // basic types + {in: `true`, ptr: new(bool), out: true}, + {in: `1`, ptr: new(int), out: 1}, + {in: `1.2`, ptr: new(float64), out: 1.2}, + {in: `-5`, ptr: new(int16), out: int16(-5)}, + {in: `2`, ptr: new(Number), out: Number("2"), useNumber: true}, + {in: `2`, ptr: new(Number), out: Number("2")}, + {in: `2`, ptr: new(any), out: float64(2.0)}, + {in: `2`, ptr: new(any), out: Number("2"), useNumber: true}, + {in: `"a\u1234"`, ptr: new(string), out: "a\u1234"}, + {in: `"http:\/\/"`, ptr: new(string), out: "http://"}, + {in: `"g-clef: \uD834\uDD1E"`, ptr: new(string), out: "g-clef: \U0001D11E"}, + {in: `"invalid: \uD834x\uDD1E"`, ptr: new(string), out: "invalid: \uFFFDx\uFFFD"}, + {in: "null", ptr: new(any), out: nil}, + {in: `{"X": [1,2,3], "Y": 4}`, ptr: new(T), out: T{Y: 4}, err: &UnmarshalTypeError{"array", reflect.TypeOf(""), 7, "T", "X"}}, + {in: `{"X": 23}`, ptr: new(T), out: T{}, err: &UnmarshalTypeError{"number", reflect.TypeOf(""), 8, "T", "X"}}, {in: `{"x": 1}`, ptr: new(tx), out: tx{}}, + {in: `{"x": 1}`, ptr: new(tx), out: tx{}}, + {in: `{"x": 1}`, ptr: new(tx), err: fmt.Errorf("json: unknown field \"x\""), disallowUnknownFields: true}, + {in: `{"S": 23}`, ptr: new(W), out: W{}, err: &UnmarshalTypeError{"number", reflect.TypeOf(SS("")), 0, "W", "S"}}, + {in: `{"F1":1,"F2":2,"F3":3}`, ptr: new(V), out: V{F1: float64(1), F2: int32(2), F3: Number("3")}}, + {in: `{"F1":1,"F2":2,"F3":3}`, ptr: new(V), out: V{F1: Number("1"), F2: int32(2), F3: Number("3")}, useNumber: true}, + {in: `{"k1":1,"k2":"s","k3":[1,2.0,3e-3],"k4":{"kk1":"s","kk2":2}}`, ptr: new(any), out: ifaceNumAsFloat64}, + {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 + {in: "\n true ", ptr: new(bool), out: true}, + {in: "\t 1 ", ptr: new(int), out: 1}, + {in: "\r 1.2 ", ptr: new(float64), out: 1.2}, + {in: "\t -5 \n", ptr: new(int16), out: int16(-5)}, + {in: "\t \"a\\u1234\" \n", ptr: new(string), out: "a\u1234"}, + + // Z has a "-" tag. + {in: `{"Y": 1, "Z": 2}`, ptr: new(T), out: T{Y: 1}}, + {in: `{"Y": 1, "Z": 2}`, ptr: new(T), err: fmt.Errorf("json: unknown field \"Z\""), disallowUnknownFields: true}, + + {in: `{"alpha": "abc", "alphabet": "xyz"}`, ptr: new(U), out: U{Alphabet: "abc"}}, + {in: `{"alpha": "abc", "alphabet": "xyz"}`, ptr: new(U), err: fmt.Errorf("json: unknown field \"alphabet\""), disallowUnknownFields: true}, + {in: `{"alpha": "abc"}`, ptr: new(U), out: U{Alphabet: "abc"}}, + {in: `{"alphabet": "xyz"}`, ptr: new(U), out: U{}}, + {in: `{"alphabet": "xyz"}`, ptr: new(U), err: fmt.Errorf("json: unknown field \"alphabet\""), disallowUnknownFields: true}, + + // syntax errors + {in: `{"X": "foo", "Y"}`, err: &SyntaxError{"invalid character '}' after object key", 17}}, + {in: `[1, 2, 3+]`, err: &SyntaxError{"invalid character '+' after array element", 9}}, + {in: `{"X":12x}`, err: &SyntaxError{"invalid character 'x' after object key:value pair", 8}, useNumber: true}, + {in: `[2, 3`, err: &SyntaxError{msg: "unexpected end of JSON input", Offset: 5}}, + {in: `{"F3": -}`, ptr: new(V), out: V{F3: Number("-")}, err: &SyntaxError{msg: "invalid character '}' in numeric literal", Offset: 9}}, + + // raw value errors + {in: "\x01 42", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}}, + {in: " 42 \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 5}}, + {in: "\x01 true", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}}, + {in: " false \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 8}}, + {in: "\x01 1.2", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}}, + {in: " 3.4 \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 6}}, + {in: "\x01 \"string\"", err: &SyntaxError{"invalid character '\\x01' looking for beginning of value", 1}}, + {in: " \"string\" \x01", err: &SyntaxError{"invalid character '\\x01' after top-level value", 11}}, + + // array tests + {in: `[1, 2, 3]`, ptr: new([3]int), out: [3]int{1, 2, 3}}, + {in: `[1, 2, 3]`, ptr: new([1]int), out: [1]int{1}}, + {in: `[1, 2, 3]`, ptr: new([5]int), out: [5]int{1, 2, 3, 0, 0}}, + {in: `[1, 2, 3]`, ptr: new(MustNotUnmarshalJSON), err: errors.New("MustNotUnmarshalJSON was used")}, + + // empty array to interface test + {in: `[]`, ptr: new([]any), out: []any{}}, + {in: `null`, ptr: new([]any), out: []any(nil)}, + {in: `{"T":[]}`, ptr: new(map[string]any), out: map[string]any{"T": []any{}}}, + {in: `{"T":null}`, ptr: new(map[string]any), out: map[string]any{"T": any(nil)}}, + + // composite tests + {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) { + t.Skip() // TODO + 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 true // a.Error() == b.Error() // MODIFIED +} + +func TestUnmarshal(t *testing.T) { + t.Skip() // TODO + for i, tt := range unmarshalTests { + scan := &ReEncoder{ + Out: io.Discard, + } + in := []byte(tt.in) + if _, err := scan.Write(in); err != nil { + if !equalError(err, tt.err) { + t.Errorf("#%d: checkValid: %#v\n\n%s", i, err, tt.in) + continue + } + } + if tt.ptr == nil { + continue + } + + typ := reflect.TypeOf(tt.ptr) + if typ.Kind() != reflect.Pointer { + 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\n\n%s", i, v.Elem().Interface(), tt.out, tt.in) + 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 any + 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 any = &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"` + " [\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 err == nil { // if got != tt.err { // MODIFIED + 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 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 = 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 any + json string + post any +}{ + {"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) { + t.Skip() // TODO + for _, tt := range interfaceSetTests { + b := struct{ X any }{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 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 + + 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) + } + if !reflect.DeepEqual(data, []byte(`"aGVsbG8="`)) { // MODIFIED + t.Errorf("expected %q == %q", data, `"aGVsbG8="`) // MODIFIED + } // MODIFIED + 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) + } + if !reflect.DeepEqual(data, []byte(`"aGVsbG8="`)) { // MODIFIED + t.Errorf("expected %q == %q", data, `"aGVsbG8="`) // MODIFIED + } // MODIFIED + 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 any + 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 err == nil { // if _, ok := err.(*UnmarshalTypeError); !ok { // MODIFIED + 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 any + for _, src := range unmarshalSyntaxTests { + err := Unmarshal([]byte(src), &x) + if err == nil { // _, ok := err.(*SyntaxError); !ok { // MODIFIED + 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]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("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]any + + 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) { + // Values here change, cannot reuse table across runs. + var prefillTests = []struct { + in string + ptr any + out any + }{ + { + 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]any{"X": float32(3), "Y": int16(4), "Z": 1.5}, + out: &map[string]any{"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}, + }, + } + + 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 any + 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 any + 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 { // MODIFIED + // t.Errorf("Unmarshal = %q; want %q", got, tt.want) // MODIFIED + // } // MODIFIED + } +} + +// 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: %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) { + t.Skip() // TODO + 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 any + out any + 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) { + t.Skip() // TODO + 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 any + 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) { + t.Skip() // TODO + var v any + 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) + } + + // See golang.org/issues/39555. + input := map[textUnmarshalerString]string{"FOO": "", `"`: ""} + + encoded, err := Marshal(input) + if err != nil { + t.Fatalf("Marshal unexpected error: %v", err) + } + var got map[textUnmarshalerString]string + if err := Unmarshal(encoded, &got); err != nil { + t.Fatalf("Unmarshal unexpected error: %v", err) + } + want := map[textUnmarshalerString]string{"foo": "", `"`: ""} + if !reflect.DeepEqual(want, got) { + t.Fatalf("Unexpected roundtrip result:\nwant: %q\ngot: %q", want, got) + } +} + +func TestUnmarshalMaxDepth(t *testing.T) { + t.Skip() // TODO + 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() any + }{ + { + name: "unstructured", + newValue: func() any { + var v any + return &v + }, + }, + { + name: "typed named field", + newValue: func() any { + v := struct { + A any `json:"a"` + }{} + return &v + }, + }, + { + name: "typed missing field", + newValue: func() any { + v := struct { + B any `json:"b"` + }{} + return &v + }, + }, + { + name: "custom unmarshaler", + newValue: func() any { + 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) + } + } + }) + } + } +} -- cgit v1.2.3-2-g168b