forked from mystiq/dex
538 lines
10 KiB
Go
538 lines
10 KiB
Go
// Copyright 2011 The Go Authors. All rights reserved.
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// Use of this source code is governed by a BSD-style
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// license that can be found in the LICENSE file.
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package json
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import (
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"bytes"
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"math"
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"reflect"
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"testing"
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"unicode"
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)
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type Optionals struct {
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Sr string `json:"sr"`
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So string `json:"so,omitempty"`
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Sw string `json:"-"`
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Ir int `json:"omitempty"` // actually named omitempty, not an option
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Io int `json:"io,omitempty"`
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Slr []string `json:"slr,random"`
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Slo []string `json:"slo,omitempty"`
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Mr map[string]interface{} `json:"mr"`
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Mo map[string]interface{} `json:",omitempty"`
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Fr float64 `json:"fr"`
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Fo float64 `json:"fo,omitempty"`
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Br bool `json:"br"`
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Bo bool `json:"bo,omitempty"`
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Ur uint `json:"ur"`
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Uo uint `json:"uo,omitempty"`
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Str struct{} `json:"str"`
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Sto struct{} `json:"sto,omitempty"`
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}
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var optionalsExpected = `{
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"sr": "",
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"omitempty": 0,
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"slr": null,
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"mr": {},
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"fr": 0,
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"br": false,
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"ur": 0,
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"str": {},
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"sto": {}
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}`
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func TestOmitEmpty(t *testing.T) {
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var o Optionals
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o.Sw = "something"
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o.Mr = map[string]interface{}{}
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o.Mo = map[string]interface{}{}
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got, err := MarshalIndent(&o, "", " ")
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if err != nil {
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t.Fatal(err)
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}
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if got := string(got); got != optionalsExpected {
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t.Errorf(" got: %s\nwant: %s\n", got, optionalsExpected)
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}
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}
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type StringTag struct {
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BoolStr bool `json:",string"`
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IntStr int64 `json:",string"`
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StrStr string `json:",string"`
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}
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var stringTagExpected = `{
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"BoolStr": "true",
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"IntStr": "42",
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"StrStr": "\"xzbit\""
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}`
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func TestStringTag(t *testing.T) {
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var s StringTag
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s.BoolStr = true
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s.IntStr = 42
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s.StrStr = "xzbit"
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got, err := MarshalIndent(&s, "", " ")
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if err != nil {
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t.Fatal(err)
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}
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if got := string(got); got != stringTagExpected {
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t.Fatalf(" got: %s\nwant: %s\n", got, stringTagExpected)
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}
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// Verify that it round-trips.
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var s2 StringTag
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err = NewDecoder(bytes.NewReader(got)).Decode(&s2)
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if err != nil {
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t.Fatalf("Decode: %v", err)
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}
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if !reflect.DeepEqual(s, s2) {
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t.Fatalf("decode didn't match.\nsource: %#v\nEncoded as:\n%s\ndecode: %#v", s, string(got), s2)
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}
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}
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// byte slices are special even if they're renamed types.
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type renamedByte byte
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type renamedByteSlice []byte
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type renamedRenamedByteSlice []renamedByte
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func TestEncodeRenamedByteSlice(t *testing.T) {
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s := renamedByteSlice("abc")
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result, err := Marshal(s)
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if err != nil {
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t.Fatal(err)
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}
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expect := `"YWJj"`
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if string(result) != expect {
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t.Errorf(" got %s want %s", result, expect)
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}
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r := renamedRenamedByteSlice("abc")
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result, err = Marshal(r)
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if err != nil {
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t.Fatal(err)
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}
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if string(result) != expect {
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t.Errorf(" got %s want %s", result, expect)
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}
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}
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var unsupportedValues = []interface{}{
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math.NaN(),
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math.Inf(-1),
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math.Inf(1),
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}
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func TestUnsupportedValues(t *testing.T) {
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for _, v := range unsupportedValues {
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if _, err := Marshal(v); err != nil {
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if _, ok := err.(*UnsupportedValueError); !ok {
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t.Errorf("for %v, got %T want UnsupportedValueError", v, err)
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}
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} else {
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t.Errorf("for %v, expected error", v)
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}
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}
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}
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// Ref has Marshaler and Unmarshaler methods with pointer receiver.
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type Ref int
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func (*Ref) MarshalJSON() ([]byte, error) {
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return []byte(`"ref"`), nil
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}
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func (r *Ref) UnmarshalJSON([]byte) error {
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*r = 12
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return nil
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}
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// Val has Marshaler methods with value receiver.
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type Val int
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func (Val) MarshalJSON() ([]byte, error) {
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return []byte(`"val"`), nil
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}
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// RefText has Marshaler and Unmarshaler methods with pointer receiver.
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type RefText int
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func (*RefText) MarshalText() ([]byte, error) {
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return []byte(`"ref"`), nil
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}
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func (r *RefText) UnmarshalText([]byte) error {
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*r = 13
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return nil
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}
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// ValText has Marshaler methods with value receiver.
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type ValText int
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func (ValText) MarshalText() ([]byte, error) {
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return []byte(`"val"`), nil
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}
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func TestRefValMarshal(t *testing.T) {
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var s = struct {
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R0 Ref
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R1 *Ref
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R2 RefText
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R3 *RefText
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V0 Val
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V1 *Val
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V2 ValText
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V3 *ValText
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}{
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R0: 12,
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R1: new(Ref),
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R2: 14,
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R3: new(RefText),
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V0: 13,
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V1: new(Val),
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V2: 15,
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V3: new(ValText),
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}
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const want = `{"R0":"ref","R1":"ref","R2":"\"ref\"","R3":"\"ref\"","V0":"val","V1":"val","V2":"\"val\"","V3":"\"val\""}`
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b, err := Marshal(&s)
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if err != nil {
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t.Fatalf("Marshal: %v", err)
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}
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if got := string(b); got != want {
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t.Errorf("got %q, want %q", got, want)
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}
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}
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// C implements Marshaler and returns unescaped JSON.
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type C int
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func (C) MarshalJSON() ([]byte, error) {
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return []byte(`"<&>"`), nil
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}
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// CText implements Marshaler and returns unescaped text.
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type CText int
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func (CText) MarshalText() ([]byte, error) {
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return []byte(`"<&>"`), nil
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}
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func TestMarshalerEscaping(t *testing.T) {
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var c C
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want := `"\u003c\u0026\u003e"`
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b, err := Marshal(c)
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if err != nil {
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t.Fatalf("Marshal(c): %v", err)
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}
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if got := string(b); got != want {
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t.Errorf("Marshal(c) = %#q, want %#q", got, want)
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}
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var ct CText
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want = `"\"\u003c\u0026\u003e\""`
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b, err = Marshal(ct)
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if err != nil {
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t.Fatalf("Marshal(ct): %v", err)
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}
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if got := string(b); got != want {
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t.Errorf("Marshal(ct) = %#q, want %#q", got, want)
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}
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}
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type IntType int
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type MyStruct struct {
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IntType
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}
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func TestAnonymousNonstruct(t *testing.T) {
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var i IntType = 11
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a := MyStruct{i}
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const want = `{"IntType":11}`
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b, err := Marshal(a)
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if err != nil {
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t.Fatalf("Marshal: %v", err)
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}
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if got := string(b); got != want {
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t.Errorf("got %q, want %q", got, want)
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}
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}
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type BugA struct {
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S string
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}
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type BugB struct {
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BugA
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S string
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}
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type BugC struct {
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S string
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}
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// Legal Go: We never use the repeated embedded field (S).
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type BugX struct {
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A int
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BugA
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BugB
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}
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// Issue 5245.
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func TestEmbeddedBug(t *testing.T) {
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v := BugB{
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BugA{"A"},
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"B",
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}
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b, err := Marshal(v)
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if err != nil {
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t.Fatal("Marshal:", err)
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}
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want := `{"S":"B"}`
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got := string(b)
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if got != want {
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t.Fatalf("Marshal: got %s want %s", got, want)
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}
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// Now check that the duplicate field, S, does not appear.
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x := BugX{
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A: 23,
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}
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b, err = Marshal(x)
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if err != nil {
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t.Fatal("Marshal:", err)
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}
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want = `{"A":23}`
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got = string(b)
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if got != want {
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t.Fatalf("Marshal: got %s want %s", got, want)
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}
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}
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type BugD struct { // Same as BugA after tagging.
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XXX string `json:"S"`
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}
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// BugD's tagged S field should dominate BugA's.
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type BugY struct {
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BugA
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BugD
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}
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// Test that a field with a tag dominates untagged fields.
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func TestTaggedFieldDominates(t *testing.T) {
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v := BugY{
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BugA{"BugA"},
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BugD{"BugD"},
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}
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b, err := Marshal(v)
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if err != nil {
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t.Fatal("Marshal:", err)
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}
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want := `{"S":"BugD"}`
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got := string(b)
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if got != want {
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t.Fatalf("Marshal: got %s want %s", got, want)
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}
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}
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// There are no tags here, so S should not appear.
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type BugZ struct {
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BugA
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BugC
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BugY // Contains a tagged S field through BugD; should not dominate.
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}
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func TestDuplicatedFieldDisappears(t *testing.T) {
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v := BugZ{
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BugA{"BugA"},
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BugC{"BugC"},
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BugY{
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BugA{"nested BugA"},
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BugD{"nested BugD"},
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},
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}
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b, err := Marshal(v)
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if err != nil {
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t.Fatal("Marshal:", err)
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}
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want := `{}`
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got := string(b)
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if got != want {
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t.Fatalf("Marshal: got %s want %s", got, want)
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}
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}
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func TestStringBytes(t *testing.T) {
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// Test that encodeState.stringBytes and encodeState.string use the same encoding.
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es := &encodeState{}
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var r []rune
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for i := '\u0000'; i <= unicode.MaxRune; i++ {
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r = append(r, i)
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}
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s := string(r) + "\xff\xff\xffhello" // some invalid UTF-8 too
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es.string(s)
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esBytes := &encodeState{}
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esBytes.stringBytes([]byte(s))
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enc := es.Buffer.String()
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encBytes := esBytes.Buffer.String()
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if enc != encBytes {
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i := 0
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for i < len(enc) && i < len(encBytes) && enc[i] == encBytes[i] {
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i++
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}
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enc = enc[i:]
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encBytes = encBytes[i:]
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i = 0
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for i < len(enc) && i < len(encBytes) && enc[len(enc)-i-1] == encBytes[len(encBytes)-i-1] {
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i++
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}
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enc = enc[:len(enc)-i]
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encBytes = encBytes[:len(encBytes)-i]
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if len(enc) > 20 {
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enc = enc[:20] + "..."
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}
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if len(encBytes) > 20 {
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encBytes = encBytes[:20] + "..."
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}
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t.Errorf("encodings differ at %#q vs %#q", enc, encBytes)
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}
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}
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func TestIssue6458(t *testing.T) {
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type Foo struct {
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M RawMessage
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}
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x := Foo{RawMessage(`"foo"`)}
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b, err := Marshal(&x)
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if err != nil {
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t.Fatal(err)
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}
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if want := `{"M":"foo"}`; string(b) != want {
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t.Errorf("Marshal(&x) = %#q; want %#q", b, want)
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}
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b, err = Marshal(x)
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if err != nil {
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t.Fatal(err)
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}
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if want := `{"M":"ImZvbyI="}`; string(b) != want {
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t.Errorf("Marshal(x) = %#q; want %#q", b, want)
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}
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}
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func TestIssue10281(t *testing.T) {
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type Foo struct {
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N Number
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}
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x := Foo{Number(`invalid`)}
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b, err := Marshal(&x)
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if err == nil {
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t.Errorf("Marshal(&x) = %#q; want error", b)
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}
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}
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func TestHTMLEscape(t *testing.T) {
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var b, want bytes.Buffer
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m := `{"M":"<html>foo &` + "\xe2\x80\xa8 \xe2\x80\xa9" + `</html>"}`
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want.Write([]byte(`{"M":"\u003chtml\u003efoo \u0026\u2028 \u2029\u003c/html\u003e"}`))
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HTMLEscape(&b, []byte(m))
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if !bytes.Equal(b.Bytes(), want.Bytes()) {
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t.Errorf("HTMLEscape(&b, []byte(m)) = %s; want %s", b.Bytes(), want.Bytes())
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}
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}
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// golang.org/issue/8582
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func TestEncodePointerString(t *testing.T) {
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type stringPointer struct {
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N *int64 `json:"n,string"`
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}
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var n int64 = 42
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b, err := Marshal(stringPointer{N: &n})
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if err != nil {
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t.Fatalf("Marshal: %v", err)
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}
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if got, want := string(b), `{"n":"42"}`; got != want {
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t.Errorf("Marshal = %s, want %s", got, want)
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}
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var back stringPointer
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err = Unmarshal(b, &back)
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if err != nil {
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t.Fatalf("Unmarshal: %v", err)
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}
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if back.N == nil {
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t.Fatalf("Unmarshalled nil N field")
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}
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if *back.N != 42 {
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t.Fatalf("*N = %d; want 42", *back.N)
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}
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}
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var encodeStringTests = []struct {
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in string
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out string
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}{
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{"\x00", `"\u0000"`},
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{"\x01", `"\u0001"`},
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{"\x02", `"\u0002"`},
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{"\x03", `"\u0003"`},
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{"\x04", `"\u0004"`},
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{"\x05", `"\u0005"`},
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{"\x06", `"\u0006"`},
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{"\x07", `"\u0007"`},
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{"\x08", `"\u0008"`},
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{"\x09", `"\t"`},
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{"\x0a", `"\n"`},
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{"\x0b", `"\u000b"`},
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{"\x0c", `"\u000c"`},
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{"\x0d", `"\r"`},
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{"\x0e", `"\u000e"`},
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{"\x0f", `"\u000f"`},
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{"\x10", `"\u0010"`},
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{"\x11", `"\u0011"`},
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{"\x12", `"\u0012"`},
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{"\x13", `"\u0013"`},
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{"\x14", `"\u0014"`},
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{"\x15", `"\u0015"`},
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{"\x16", `"\u0016"`},
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{"\x17", `"\u0017"`},
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{"\x18", `"\u0018"`},
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{"\x19", `"\u0019"`},
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{"\x1a", `"\u001a"`},
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{"\x1b", `"\u001b"`},
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{"\x1c", `"\u001c"`},
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{"\x1d", `"\u001d"`},
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{"\x1e", `"\u001e"`},
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{"\x1f", `"\u001f"`},
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}
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func TestEncodeString(t *testing.T) {
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for _, tt := range encodeStringTests {
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b, err := Marshal(tt.in)
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if err != nil {
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t.Errorf("Marshal(%q): %v", tt.in, err)
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continue
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}
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out := string(b)
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if out != tt.out {
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t.Errorf("Marshal(%q) = %#q, want %#q", tt.in, out, tt.out)
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}
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}
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}
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