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// Copyright (c) Microsoft Corporation.
// Licensed under the MIT license.
package json
import (
"encoding/json"
"fmt"
"testing"
"time"
"github.com/kylelemons/godebug/pretty"
)
type StructA struct {
Name string
ID int `json:"id"`
Meta *StructB
AdditionalFields map[string]interface{}
}
type StructB struct {
Address string
AdditionalFields map[string]interface{}
}
type StructC struct {
Time time.Time
Project StructD
AdditionalFields map[string]interface{}
}
type StructD struct {
Project string
Info StructE
AdditionalFields map[string]interface{}
}
type StructE struct {
Employees int
AdditionalFields map[string]interface{}
}
func TestUnmarshal(t *testing.T) {
now := time.Now()
nowJSON, err := now.MarshalJSON()
if err != nil {
panic(err)
}
tests := []struct {
desc string
b []byte
got interface{}
want interface{}
err bool
}{
{
desc: "receiver not a pointer",
got: StructA{},
b: []byte(`{"content": "value"}`),
err: true,
},
{
desc: "receiver not a pointer to a struct",
got: new(string),
b: []byte(`{"content": "value"}`),
err: true,
},
{
desc: "AdditionalFields not a map",
b: []byte(`{"content": "value"}`),
got: &struct {
AdditionalFields string
}{},
err: true,
},
{
desc: "Success, no json.Unmarshaler types",
b: []byte(
`
{
"Name": "John",
"id": 3,
"Meta": {
"Address": "291 Street",
"unknown0": 3.2
},
"unknown0": 10,
"unknown1": "hello"
}
`,
),
got: &StructA{},
want: &StructA{
Name: "John",
ID: 3,
Meta: &StructB{
Address: "291 Street",
AdditionalFields: map[string]interface{}{
"unknown0": MarshalRaw(3.2),
},
},
AdditionalFields: map[string]interface{}{
"unknown0": MarshalRaw(10),
"unknown1": MarshalRaw("hello"),
},
},
},
{
desc: "Success, a type has json.Unmarshaler",
b: []byte(fmt.Sprintf(`
{
"Time":%s,
"Project": {
"Project":"myProject",
"Info":{
"Employees":2
}
}
}
`, string(nowJSON))),
got: &StructC{},
want: &StructC{
Time: now,
Project: StructD{
Project: "myProject",
Info: StructE{
Employees: 2,
},
},
},
},
}
for _, test := range tests {
err := Unmarshal(test.b, test.got)
switch {
case err == nil && test.err:
t.Errorf("TestUnmarshal(%s): got err == nil, want err != nil", test.desc)
continue
case err != nil && !test.err:
t.Errorf("TestUnmarshal(%s): got err == %s, want err == nil", test.desc, err)
continue
case err != nil:
continue
}
if diff := (&pretty.Config{IncludeUnexported: false}).Compare(test.want, test.got); diff != "" {
t.Errorf("TestUnmarshal(%s): -want/+got:\n%s", test.desc, diff)
}
}
}
func TestIsDelim(t *testing.T) {
tests := []struct {
desc string
token json.Token
want bool
}{
{desc: "Is delim", token: json.Delim('{'), want: true},
{desc: "Not a delim", token: json.Token("{"), want: false},
}
for _, test := range tests {
got := isDelim(test.token)
if got != test.want {
t.Errorf("TestIsDelim(%s): got %v, want %v", test.desc, got, test.want)
}
}
}
func TestDelimIs(t *testing.T) {
tests := []struct {
desc string
token json.Token
delim rune
want bool
}{
{desc: "Token is a match", token: json.Delim('{'), delim: '{', want: true},
{desc: "Token is not a match", token: json.Delim('{'), delim: '}', want: false},
}
for _, test := range tests {
got := delimIs(test.token, test.delim)
if got != test.want {
t.Errorf("TestDelimIs(%s): got %v, want %v", test.desc, got, test.want)
}
}
}
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