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encode_test.go
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encode_test.go
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//go:build (amd64 && go1.17 && !go1.24) || (arm64 && go1.20 && !go1.24)
// +build amd64,go1.17,!go1.24 arm64,go1.20,!go1.24
/*
* Copyright 2021 ByteDance Inc.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package sonic
import (
`bytes`
`encoding`
`encoding/json`
`fmt`
`log`
`math`
`os`
`reflect`
`regexp`
`runtime`
`runtime/debug`
`strconv`
`testing`
`time`
`unsafe`
`strings`
`github.com/bytedance/sonic/encoder`
`github.com/stretchr/testify/assert`
)
var (
debugAsyncGC = os.Getenv("SONIC_NO_ASYNC_GC") == ""
)
func TestMain(m *testing.M) {
go func () {
if !debugAsyncGC {
return
}
println("Begin GC looping...")
for {
runtime.GC()
debug.FreeOSMemory()
}
}()
time.Sleep(time.Millisecond)
m.Run()
}
type Optionals struct {
Sr string `json:"sr"`
So string `json:"so,omitempty"`
Sw string `json:"-"`
Ir int `json:"omitempty"` // actually named omitempty, not an option
Io int `json:"io,omitempty"`
Slr []string `json:"slr,random"`
Slo []string `json:"slo,omitempty"`
Mr map[string]interface{} `json:"mr"`
Mo map[string]interface{} `json:",omitempty"`
Fr float64 `json:"fr"`
Fo float64 `json:"fo,omitempty"`
Br bool `json:"br"`
Bo bool `json:"bo,omitempty"`
Ur uint `json:"ur"`
Uo uint `json:"uo,omitempty"`
Str struct{} `json:"str"`
Sto struct{} `json:"sto,omitempty"`
}
var optionalsExpected = `{
"sr": "",
"omitempty": 0,
"slr": null,
"mr": {},
"fr": 0,
"br": false,
"ur": 0,
"str": {},
"sto": {}
}`
func TestOmitEmpty(t *testing.T) {
var o Optionals
o.Sw = "something"
o.Mr = map[string]interface{}{}
o.Mo = map[string]interface{}{}
got, err := encoder.EncodeIndented(&o, "", " ", 0)
if err != nil {
t.Fatal(err)
}
if got := string(got); got != optionalsExpected {
t.Errorf(" got: %s\nwant: %s\n", got, optionalsExpected)
}
}
type StringTag struct {
BoolStr bool `json:",string"`
IntStr int64 `json:",string"`
UintptrStr uintptr `json:",string"`
StrStr string `json:",string"`
NumberStr json.Number `json:",string"`
}
func TestRoundtripStringTag(t *testing.T) {
tests := []struct {
name string
in StringTag
want string // empty to just test that we roundtrip
}{
{
name: "AllTypes",
in: StringTag{
BoolStr: true,
IntStr: 42,
UintptrStr: 44,
StrStr: "xzbit",
NumberStr: "46",
},
want: `{
"BoolStr": "true",
"IntStr": "42",
"UintptrStr": "44",
"StrStr": "\"xzbit\"",
"NumberStr": "46"
}`,
},
{
// See golang.org/issues/38173.
name: "StringDoubleEscapes",
in: StringTag{
StrStr: "\b\f\n\r\t\"\\",
NumberStr: "0", // just to satisfy the roundtrip
},
want: `{
"BoolStr": "false",
"IntStr": "0",
"UintptrStr": "0",
"StrStr": "\"\\u0008\\u000c\\n\\r\\t\\\"\\\\\"",
"NumberStr": "0"
}`,
},
}
for _, test := range tests {
t.Run(test.name, func(t *testing.T) {
// Indent with a tab prefix to make the multi-line string
// literals in the table nicer to read.
got, err := encoder.EncodeIndented(&test.in, " ", " ", 0)
if err != nil {
t.Fatal(err)
}
if got := string(got); got != test.want {
t.Fatalf(" got: %s\nwant: %s\n", got, test.want)
}
// Verify that it round-trips.
var s2 StringTag
if err := Unmarshal(got, &s2); err != nil {
t.Fatalf("Decode: %v", err)
}
if !reflect.DeepEqual(test.in, s2) {
t.Fatalf("decode didn't match.\nsource: %#v\nEncoded as:\n%s\ndecode: %#v", test.in, string(got), s2)
}
})
}
}
// byte slices are special even if they're renamed types.
type renamedByte byte
type renamedByteSlice []byte
type renamedRenamedByteSlice []renamedByte
func TestEncodeRenamedByteSlice(t *testing.T) {
s := renamedByteSlice("abc")
result, err := Marshal(s)
if err != nil {
t.Fatal(err)
}
expect := `"YWJj"`
if string(result) != expect {
t.Errorf(" got %s want %s", result, expect)
}
r := renamedRenamedByteSlice("abc")
result, err = Marshal(r)
if err != nil {
t.Fatal(err)
}
if string(result) != expect {
t.Errorf(" got %s want %s", result, expect)
}
}
type SamePointerNoCycle struct {
Ptr1, Ptr2 *SamePointerNoCycle
}
var samePointerNoCycle = &SamePointerNoCycle{}
type PointerCycle struct {
Ptr *PointerCycle
}
var pointerCycle = &PointerCycle{}
type PointerCycleIndirect struct {
Ptrs []interface{}
}
type RecursiveSlice []RecursiveSlice
var (
pointerCycleIndirect = &PointerCycleIndirect{}
mapCycle = make(map[string]interface{})
sliceCycle = []interface{}{nil}
sliceNoCycle = []interface{}{nil, nil}
recursiveSliceCycle = []RecursiveSlice{nil}
)
func init() {
ptr := &SamePointerNoCycle{}
samePointerNoCycle.Ptr1 = ptr
samePointerNoCycle.Ptr2 = ptr
pointerCycle.Ptr = pointerCycle
pointerCycleIndirect.Ptrs = []interface{}{pointerCycleIndirect}
mapCycle["x"] = mapCycle
sliceCycle[0] = sliceCycle
sliceNoCycle[1] = sliceNoCycle[:1]
for i := 3; i > 0; i-- {
sliceNoCycle = []interface{}{sliceNoCycle}
}
recursiveSliceCycle[0] = recursiveSliceCycle
}
func TestSamePointerNoCycle(t *testing.T) {
if _, err := Marshal(samePointerNoCycle); err != nil {
t.Fatalf("unexpected error: %v", err)
}
}
func TestSliceNoCycle(t *testing.T) {
if _, err := Marshal(sliceNoCycle); err != nil {
t.Fatalf("unexpected error: %v", err)
}
}
var unsupportedValues = []interface{}{
math.NaN(),
math.Inf(-1),
math.Inf(1),
pointerCycle,
pointerCycleIndirect,
mapCycle,
sliceCycle,
recursiveSliceCycle,
}
func TestUnsupportedValues(t *testing.T) {
for _, v := range unsupportedValues {
if _, err := Marshal(v); err != nil {
if _, ok := err.(*json.UnsupportedValueError); !ok {
t.Errorf("for %v, got %T want UnsupportedValueError", v, err)
}
} else {
t.Errorf("for %v, expected error", v)
}
}
}
// Ref has Marshaler and Unmarshaler methods with pointer receiver.
type Ref int
func (*Ref) MarshalJSON() ([]byte, error) {
return []byte(`"ref"`), nil
}
func (r *Ref) UnmarshalJSON([]byte) error {
*r = 12
return nil
}
// Val has Marshaler methods with value receiver.
type Val int
func (Val) MarshalJSON() ([]byte, error) {
return []byte(`"val"`), nil
}
// RefText has Marshaler and Unmarshaler methods with pointer receiver.
type RefText int
func (*RefText) MarshalText() ([]byte, error) {
return []byte(`"ref"`), nil
}
func (r *RefText) UnmarshalText([]byte) error {
*r = 13
return nil
}
// ValText has Marshaler methods with value receiver.
type ValText int
func (ValText) MarshalText() ([]byte, error) {
return []byte(`"val"`), nil
}
func TestRefValMarshal(t *testing.T) {
var s = struct {
R0 Ref
R1 *Ref
R2 RefText
R3 *RefText
V0 Val
V1 *Val
V2 ValText
V3 *ValText
}{
R0: 12,
R1: new(Ref),
R2: 14,
R3: new(RefText),
V0: 13,
V1: new(Val),
V2: 15,
V3: new(ValText),
}
const want = `{"R0":"ref","R1":"ref","R2":"\"ref\"","R3":"\"ref\"","V0":"val","V1":"val","V2":"\"val\"","V3":"\"val\""}`
b, err := Marshal(&s)
if err != nil {
t.Fatalf("Marshal: %v", err)
}
if got := string(b); got != want {
t.Errorf("got %q, want %q", got, want)
}
}
/*
FIXME: disabling these test cases for now, because Sonic does not implement HTML escape
I don't think there are real usages of the `HTMLEscape` feature in real code
// C implements Marshaler and returns unescaped JSON.
type C int
func (C) MarshalJSON() ([]byte, error) {
return []byte(`"<&>"`), nil
}
// CText implements Marshaler and returns unescaped text.
type CText int
func (CText) MarshalText() ([]byte, error) {
return []byte(`"<&>"`), nil
}
func TestMarshalerEscaping(t *testing.T) {
var c C
want := `"\u003c\u0026\u003e"`
b, err := Marshal(c)
if err != nil {
t.Fatalf("Marshal(c): %v", err)
}
if got := string(b); got != want {
t.Errorf("Marshal(c) = %#q, want %#q", got, want)
}
var ct CText
want = `"\"\u003c\u0026\u003e\""`
b, err = Marshal(ct)
if err != nil {
t.Fatalf("Marshal(ct): %v", err)
}
if got := string(b); got != want {
t.Errorf("Marshal(ct) = %#q, want %#q", got, want)
}
}
*/
func TestAnonymousFields(t *testing.T) {
tests := []struct {
label string // Test name
makeInput func() interface{} // Function to create input value
want string // Expected JSON output
}{{
// Both S1 and S2 have a field named X. From the perspective of S,
// it is ambiguous which one X refers to.
// This should not serialize either field.
label: "AmbiguousField",
makeInput: func() interface{} {
type (
S1 struct{ x, X int }
S2 struct{ x, X int }
S struct {
S1
S2
}
)
return S{S1{1, 2}, S2{3, 4}}
},
want: `{}`,
}, {
label: "DominantField",
// Both S1 and S2 have a field named X, but since S has an X field as
// well, it takes precedence over S1.X and S2.X.
makeInput: func() interface{} {
type (
S1 struct{ x, X int }
S2 struct{ x, X int }
S struct {
S1
S2
x, X int
}
)
return S{S1{1, 2}, S2{3, 4}, 5, 6}
},
want: `{"X":6}`,
}, {
// Unexported embedded field of non-struct type should not be serialized.
label: "UnexportedEmbeddedInt",
makeInput: func() interface{} {
type (
myInt int
S struct{ myInt }
)
return S{5}
},
want: `{}`,
}, {
// Exported embedded field of non-struct type should be serialized.
label: "ExportedEmbeddedInt",
makeInput: func() interface{} {
type (
MyInt int
S struct{ MyInt }
)
return S{5}
},
want: `{"MyInt":5}`,
}, {
// Unexported embedded field of pointer to non-struct type
// should not be serialized.
label: "UnexportedEmbeddedIntPointer",
makeInput: func() interface{} {
type (
myInt int
S struct{ *myInt }
)
s := S{new(myInt)}
*s.myInt = 5
return s
},
want: `{}`,
}, {
// Exported embedded field of pointer to non-struct type
// should be serialized.
label: "ExportedEmbeddedIntPointer",
makeInput: func() interface{} {
type (
MyInt int
S struct{ *MyInt }
)
s := S{new(MyInt)}
*s.MyInt = 5
return s
},
want: `{"MyInt":5}`,
}, {
// Exported fields of embedded structs should have their
// exported fields be serialized regardless of whether the struct types
// themselves are exported.
label: "EmbeddedStruct",
makeInput: func() interface{} {
type (
s1 struct{ x, X int }
S2 struct{ y, Y int }
S struct {
s1
S2
}
)
return S{s1{1, 2}, S2{3, 4}}
},
want: `{"X":2,"Y":4}`,
}, {
// Exported fields of pointers to embedded structs should have their
// exported fields be serialized regardless of whether the struct types
// themselves are exported.
label: "EmbeddedStructPointer",
makeInput: func() interface{} {
type (
s1 struct{ x, X int }
S2 struct{ y, Y int }
S struct {
*s1
*S2
}
)
return S{&s1{1, 2}, &S2{3, 4}}
},
want: `{"X":2,"Y":4}`,
}, {
// Exported fields on embedded unexported structs at multiple levels
// of nesting should still be serialized.
label: "NestedStructAndInts",
makeInput: func() interface{} {
type (
MyInt1 int
MyInt2 int
myInt int
s2 struct {
MyInt2
myInt
}
s1 struct {
MyInt1
myInt
s2
}
S struct {
s1
myInt
}
)
return S{s1{1, 2, s2{3, 4}}, 6}
},
want: `{"MyInt1":1,"MyInt2":3}`,
}, {
// If an anonymous struct pointer field is nil, we should ignore
// the embedded fields behind it. Not properly doing so may
// result in the wrong output or reflect panics.
label: "EmbeddedFieldBehindNilPointer",
makeInput: func() interface{} {
type (
S2 struct{ Field string }
S struct{ *S2 }
)
return S{}
},
want: `{}`,
}}
for _, tt := range tests {
t.Run(tt.label, func(t *testing.T) {
b, err := Marshal(tt.makeInput())
if err != nil {
t.Fatalf("Marshal() = %v, want nil error", err)
}
if string(b) != tt.want {
t.Fatalf("Marshal() = %q, want %q", b, tt.want)
}
})
}
}
type BugA struct {
S string
}
type BugB struct {
BugA
S string
}
type BugC struct {
S string
}
// Legal Go: We never use the repeated embedded field (S).
type BugX struct {
A int
BugA
BugB
}
// golang.org/issue/16042.
// Even if a nil interface value is passed in, as long as
// it implements Marshaler, it should be marshaled.
type nilJSONMarshaler string
func (nm *nilJSONMarshaler) MarshalJSON() ([]byte, error) {
if nm == nil {
return Marshal("0zenil0")
}
return Marshal("zenil:" + string(*nm))
}
// golang.org/issue/34235.
// Even if a nil interface value is passed in, as long as
// it implements encoding.TextMarshaler, it should be marshaled.
type nilTextMarshaler string
func (nm *nilTextMarshaler) MarshalText() ([]byte, error) {
if nm == nil {
return []byte("0zenil0"), nil
}
return []byte("zenil:" + string(*nm)), nil
}
// See golang.org/issue/16042 and golang.org/issue/34235.
func TestNilMarshal(t *testing.T) {
testCases := []struct {
v interface{}
want string
}{
{v: nil, want: `null`},
{v: new(float64), want: `0`},
{v: []interface{}(nil), want: `null`},
{v: []string(nil), want: `null`},
{v: map[string]string(nil), want: `null`},
{v: []byte(nil), want: `null`},
{v: struct{ M string }{"gopher"}, want: `{"M":"gopher"}`},
{v: struct{ M json.Marshaler }{}, want: `{"M":null}`},
{v: struct{ M json.Marshaler }{(*nilJSONMarshaler)(nil)}, want: `{"M":"0zenil0"}`},
{v: struct{ M interface{} }{(*nilJSONMarshaler)(nil)}, want: `{"M":null}`},
{v: struct{ M encoding.TextMarshaler }{}, want: `{"M":null}`},
{v: struct{ M encoding.TextMarshaler }{(*nilTextMarshaler)(nil)}, want: `{"M":"0zenil0"}`},
{v: struct{ M interface{} }{(*nilTextMarshaler)(nil)}, want: `{"M":null}`},
}
for _, tt := range testCases {
out, err := Marshal(tt.v)
if err != nil || string(out) != tt.want {
t.Errorf("Marshal(%#v) = %#q, %#v, want %#q, nil", tt.v, out, err, tt.want)
continue
}
}
}
// Issue 5245.
func TestEmbeddedBug(t *testing.T) {
v := BugB{
BugA{"A"},
"B",
}
b, err := Marshal(v)
if err != nil {
t.Fatal("Marshal:", err)
}
want := `{"S":"B"}`
got := string(b)
if got != want {
t.Fatalf("Marshal: got %s want %s", got, want)
}
// Now check that the duplicate field, S, does not appear.
x := BugX{
A: 23,
}
b, err = Marshal(x)
if err != nil {
t.Fatal("Marshal:", err)
}
want = `{"A":23}`
got = string(b)
if got != want {
t.Fatalf("Marshal: got %s want %s", got, want)
}
}
type BugD struct { // Same as BugA after tagging.
XXX string `json:"S"`
}
// BugD's tagged S field should dominate BugA's.
type BugY struct {
BugA
BugD
}
// Test that a field with a tag dominates untagged fields.
func TestTaggedFieldDominates(t *testing.T) {
v := BugY{
BugA{"BugA"},
BugD{"BugD"},
}
b, err := Marshal(v)
if err != nil {
t.Fatal("Marshal:", err)
}
want := `{"S":"BugD"}`
got := string(b)
if got != want {
t.Fatalf("Marshal: got %s want %s", got, want)
}
}
// There are no tags here, so S should not appear.
type BugZ struct {
BugA
BugC
BugY // Contains a tagged S field through BugD; should not dominate.
}
func TestDuplicatedFieldDisappears(t *testing.T) {
v := BugZ{
BugA{"BugA"},
BugC{"BugC"},
BugY{
BugA{"nested BugA"},
BugD{"nested BugD"},
},
}
b, err := Marshal(v)
if err != nil {
t.Fatal("Marshal:", err)
}
want := `{}`
got := string(b)
if got != want {
t.Fatalf("Marshal: got %s want %s", got, want)
}
}
func TestStdLibIssue10281(t *testing.T) {
type Foo struct {
N json.Number
}
x := Foo{json.Number(`invalid`)}
b, err := Marshal(&x)
if err == nil {
t.Errorf("Marshal(&x) = %#q; want error", b)
}
}
// golang.org/issue/8582
func TestEncodePointerString(t *testing.T) {
type stringPointer struct {
N *int64 `json:"n,string"`
}
var n int64 = 42
b, err := Marshal(stringPointer{N: &n})
if err != nil {
t.Fatalf("Marshal: %v", err)
}
if got, want := string(b), `{"n":"42"}`; got != want {
t.Errorf("Marshal = %s, want %s", got, want)
}
var back stringPointer
err = Unmarshal(b, &back)
if err != nil {
t.Fatalf("Unmarshal: %v", err)
}
if back.N == nil {
t.Fatalf("Unmarshaled nil N field")
}
if *back.N != 42 {
t.Fatalf("*N = %d; want 42", *back.N)
}
}
var encodeStringTests = []struct {
in string
out string
}{
{"\x00", `"\u0000"`},
{"\x01", `"\u0001"`},
{"\x02", `"\u0002"`},
{"\x03", `"\u0003"`},
{"\x04", `"\u0004"`},
{"\x05", `"\u0005"`},
{"\x06", `"\u0006"`},
{"\x07", `"\u0007"`},
{"\x08", `"\u0008"`},
{"\x09", `"\t"`},
{"\x0a", `"\n"`},
{"\x0b", `"\u000b"`},
{"\x0c", `"\u000c"`},
{"\x0d", `"\r"`},
{"\x0e", `"\u000e"`},
{"\x0f", `"\u000f"`},
{"\x10", `"\u0010"`},
{"\x11", `"\u0011"`},
{"\x12", `"\u0012"`},
{"\x13", `"\u0013"`},
{"\x14", `"\u0014"`},
{"\x15", `"\u0015"`},
{"\x16", `"\u0016"`},
{"\x17", `"\u0017"`},
{"\x18", `"\u0018"`},
{"\x19", `"\u0019"`},
{"\x1a", `"\u001a"`},
{"\x1b", `"\u001b"`},
{"\x1c", `"\u001c"`},
{"\x1d", `"\u001d"`},
{"\x1e", `"\u001e"`},
{"\x1f", `"\u001f"`},
}
func TestEncodeString(t *testing.T) {
for _, tt := range encodeStringTests {
b, err := Marshal(tt.in)
if err != nil {
t.Errorf("Marshal(%q): %v", tt.in, err)
continue
}
out := string(b)
if out != tt.out {
t.Errorf("Marshal(%q) = %#q, want %#q", tt.in, out, tt.out)
}
}
}
type jsonbyte byte
func (b jsonbyte) MarshalJSON() ([]byte, error) { return tenc(`{"JB":%d}`, b) }
type textbyte byte
func (b textbyte) MarshalText() ([]byte, error) { return tenc(`TB:%d`, b) }
type jsonint int
func (i jsonint) MarshalJSON() ([]byte, error) { return tenc(`{"JI":%d}`, i) }
type textint int
func (i textint) MarshalText() ([]byte, error) { return tenc(`TI:%d`, i) }
func tenc(format string, a ...interface{}) ([]byte, error) {
var buf bytes.Buffer
_, _ = fmt.Fprintf(&buf, format, a...)
return buf.Bytes(), nil
}
// Issue 13783
func TestEncodeBytekind(t *testing.T) {
testdata := []struct {
data interface{}
want string
}{
{byte(7), "7"},
{jsonbyte(7), `{"JB":7}`},
{textbyte(4), `"TB:4"`},
{jsonint(5), `{"JI":5}`},
{textint(1), `"TI:1"`},
{[]byte{0, 1}, `"AAE="`},
{[]jsonbyte{0, 1}, `[{"JB":0},{"JB":1}]`},
{[][]jsonbyte{{0, 1}, {3}}, `[[{"JB":0},{"JB":1}],[{"JB":3}]]`},
{[]textbyte{2, 3}, `["TB:2","TB:3"]`},
{[]jsonint{5, 4}, `[{"JI":5},{"JI":4}]`},
{[]textint{9, 3}, `["TI:9","TI:3"]`},
{[]int{9, 3}, `[9,3]`},
}
for _, d := range testdata {
js, err := Marshal(d.data)
if err != nil {
t.Error(err)
continue
}
got, want := string(js), d.want
if got != want {
t.Errorf("got %s, want %s", got, want)
}
}
}
// https://golang.org/issue/33675
func TestNilMarshalerTextMapKey(t *testing.T) {
b, err := Marshal(map[*unmarshalerText]int{
(*unmarshalerText)(nil): 1,
})
if err != nil {
t.Fatalf("Failed to Marshal *text.Marshaler: %v", err)
}
const want = `{"":1}`
if string(b) != want {
t.Errorf("Marshal map with *text.Marshaler keys: got %#q, want %#q", b, want)
}
}
var re = regexp.MustCompile
// syntactic checks on form of marshaled floating point numbers.
var badFloatREs = []*regexp.Regexp{
re(`p`), // no binary exponential notation
re(`^\+`), // no leading + sign
re(`^-?0[^.]`), // no unnecessary leading zeros
re(`^-?\.`), // leading zero required before decimal point
re(`\.(e|$)`), // no trailing decimal
re(`\.[0-9]+0(e|$)`), // no trailing zero in fraction
re(`^-?(0|[0-9]{2,})\..*e`), // exponential notation must have normalized mantissa
re(`e[+-]0`), // exponent must not have leading zeros
re(`e-[1-6]$`), // not tiny enough for exponential notation
re(`e+(.|1.|20)$`), // not big enough for exponential notation
re(`^-?0\.0000000`), // too tiny, should use exponential notation
re(`^-?[0-9]{22}`), // too big, should use exponential notation
re(`[1-9][0-9]{16}[1-9]`), // too many significant digits in integer
re(`[1-9][0-9.]{17}[1-9]`), // too many significant digits in decimal
}
func TestMarshalFloat(t *testing.T) {
t.Parallel()
nfail := 0
test := func(f float64, bits int) {
vf := interface{}(f)
if bits == 32 {
f = float64(float32(f)) // round
vf = float32(f)
}
bout, err := Marshal(vf)
if err != nil {
t.Errorf("Marshal(%T(%g)): %v", vf, vf, err)
nfail++
return
}
out := string(bout)
// result must convert back to the same float
g, err := strconv.ParseFloat(out, bits)
if err != nil {
t.Errorf("Marshal(%T(%g)) = %q, cannot parse back: %v", vf, vf, out, err)
nfail++
return
}
if f != g {
t.Errorf("Marshal(%T(%g)) = %q (is %g, not %g)", vf, vf, out, float32(g), vf)
nfail++
return
}
for _, re := range badFloatREs {
if re.MatchString(out) {
t.Errorf("Marshal(%T(%g)) = %q, must not match /%s/", vf, vf, out, re)
nfail++
return
}
}
}
var (
bigger = math.Inf(+1)
smaller = math.Inf(-1)
)
var digits = "1.2345678901234567890123"
for i := len(digits); i >= 2; i-- {
if testing.Short() && i < len(digits)-4 {
break
}
for exp := -30; exp <= 30; exp++ {
for _, sign := range "+-" {
for bits := 32; bits <= 64; bits += 32 {
s := fmt.Sprintf("%c%se%d", sign, digits[:i], exp)
f, err := strconv.ParseFloat(s, bits)
if err != nil {
log.Fatal(err)
}
next := math.Nextafter
if bits == 32 {
next = func(g, h float64) float64 {
return float64(math.Nextafter32(float32(g), float32(h)))
}
}
test(f, bits)
test(next(f, bigger), bits)
test(next(f, smaller), bits)
if nfail > 50 {
t.Fatalf("stopping test early")
}
}
}
}
}
test(0, 64)
test(math.Copysign(0, -1), 64)
test(0, 32)
test(math.Copysign(0, -1), 32)
}
func TestMarshalRawMessageValue(t *testing.T) {
type (
T1 struct {
M json.RawMessage `json:",omitempty"`
}
T2 struct {
M *json.RawMessage `json:",omitempty"`
}
)