1 // Copyright 2012 The Go Authors. All rights reserved. 2 // Use of this source code is governed by a BSD-style 3 // license that can be found in the LICENSE file. 4 5 package main 6 7 import ( 8 "encoding/json" 9 "log" 10 "reflect" 11 ) 12 13 type Message struct { 14 Name string 15 Body string 16 Time int64 17 } 18 19 // STOP OMIT 20 21 func Encode() { 22 m := Message{"Alice", "Hello", 1294706395881547000} 23 b, err := json.Marshal(m) 24 25 if err != nil { 26 panic(err) 27 } 28 29 expected := []byte(`{"Name":"Alice","Body":"Hello","Time":1294706395881547000}`) 30 if !reflect.DeepEqual(b, expected) { 31 log.Panicf("Error marshalling %q, expected %q, got %q.", m, expected, b) 32 } 33 34 } 35 36 func Decode() { 37 b := []byte(`{"Name":"Alice","Body":"Hello","Time":1294706395881547000}`) 38 var m Message 39 err := json.Unmarshal(b, &m) 40 41 if err != nil { 42 panic(err) 43 } 44 45 expected := Message{ 46 Name: "Alice", 47 Body: "Hello", 48 Time: 1294706395881547000, 49 } 50 51 if !reflect.DeepEqual(m, expected) { 52 log.Panicf("Error unmarshalling %q, expected %q, got %q.", b, expected, m) 53 } 54 55 m = Message{ 56 Name: "Alice", 57 Body: "Hello", 58 Time: 1294706395881547000, 59 } 60 61 // STOP OMIT 62 } 63 64 func PartialDecode() { 65 b := []byte(`{"Name":"Bob","Food":"Pickle"}`) 66 var m Message 67 err := json.Unmarshal(b, &m) 68 69 // STOP OMIT 70 71 if err != nil { 72 panic(err) 73 } 74 75 expected := Message{ 76 Name: "Bob", 77 } 78 79 if !reflect.DeepEqual(expected, m) { 80 log.Panicf("Error unmarshalling %q, expected %q, got %q.", b, expected, m) 81 } 82 } 83 84 func main() { 85 Encode() 86 Decode() 87 PartialDecode() 88 } 89
