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1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file | 1 // Copyright (c) 2011, the Dart project authors. Please see the AUTHORS file |
2 // for details. All rights reserved. Use of this source code is governed by a | 2 // for details. All rights reserved. Use of this source code is governed by a |
3 // BSD-style license that can be found in the LICENSE file. | 3 // BSD-style license that can be found in the LICENSE file. |
4 | 4 |
5 library json_tests; | 5 library json_tests; |
6 import "package:expect/expect.dart"; | 6 import "package:expect/expect.dart"; |
7 import 'dart:json' as json; | 7 import "dart:convert"; |
8 import 'dart:html'; | 8 import 'dart:html'; |
9 import '../../pkg/unittest/lib/unittest.dart'; | 9 import '../../pkg/unittest/lib/unittest.dart'; |
10 import '../../pkg/unittest/lib/html_config.dart'; | 10 import '../../pkg/unittest/lib/html_config.dart'; |
11 | 11 |
12 main() { | 12 main() { |
13 useHtmlConfiguration(); | 13 useHtmlConfiguration(); |
14 test('Parse', () { | 14 test('Parse', () { |
15 // Scalars. | 15 // Scalars. |
16 expect(json.parse(' 5 '), equals(5)); | 16 expect(JSON.decode(' 5 '), equals(5)); |
17 expect(json.parse(' -42 '), equals(-42)); | 17 expect(JSON.decode(' -42 '), equals(-42)); |
18 expect(json.parse(' 3e0 '), equals(3)); | 18 expect(JSON.decode(' 3e0 '), equals(3)); |
19 expect(json.parse(' 3.14 '), equals(3.14)); | 19 expect(JSON.decode(' 3.14 '), equals(3.14)); |
20 expect(json.parse('true '), isTrue); | 20 expect(JSON.decode('true '), isTrue); |
21 expect(json.parse(' false'), isFalse); | 21 expect(JSON.decode(' false'), isFalse); |
22 expect(json.parse(' null '), isNull); | 22 expect(JSON.decode(' null '), isNull); |
23 expect(json.parse('\n\rnull\t'), isNull); | 23 expect(JSON.decode('\n\rnull\t'), isNull); |
24 expect(json.parse(' "hi there\\" bob" '), equals('hi there" bob')); | 24 expect(JSON.decode(' "hi there\\" bob" '), equals('hi there" bob')); |
25 expect(json.parse(' "" '), isEmpty); | 25 expect(JSON.decode(' "" '), isEmpty); |
26 | 26 |
27 // Lists. | 27 // Lists. |
28 expect(json.parse(' [] '), isEmpty); | 28 expect(JSON.decode(' [] '), isEmpty); |
29 expect(json.parse('[ ]'), isEmpty); | 29 expect(JSON.decode('[ ]'), isEmpty); |
30 expect(json.parse(' [3, -4.5, true, "hi", false] '), | 30 expect(JSON.decode(' [3, -4.5, true, "hi", false] '), |
31 equals([3, -4.5, true, 'hi', false])); | 31 equals([3, -4.5, true, 'hi', false])); |
32 // Nulls are tricky. | 32 // Nulls are tricky. |
33 expect(json.parse('[null]'), orderedEquals([null])); | 33 expect(JSON.decode('[null]'), orderedEquals([null])); |
34 expect(json.parse(' [3, -4.5, null, true, "hi", false] '), | 34 expect(JSON.decode(' [3, -4.5, null, true, "hi", false] '), |
35 equals([3, -4.5, null, true, 'hi', false])); | 35 equals([3, -4.5, null, true, 'hi', false])); |
36 expect(json.parse('[[null]]'), equals([[null]])); | 36 expect(JSON.decode('[[null]]'), equals([[null]])); |
37 expect(json.parse(' [ [3], [], [null], ["hi", true]] '), | 37 expect(JSON.decode(' [ [3], [], [null], ["hi", true]] '), |
38 equals([[3], [], [null], ['hi', true]])); | 38 equals([[3], [], [null], ['hi', true]])); |
39 | 39 |
40 // Maps. | 40 // Maps. |
41 expect(json.parse(' {} '), isEmpty); | 41 expect(JSON.decode(' {} '), isEmpty); |
42 expect(json.parse('{ }'), isEmpty); | 42 expect(JSON.decode('{ }'), isEmpty); |
43 | 43 |
44 expect(json.parse( | 44 expect(JSON.decode( |
45 ' {"x":3, "y": -4.5, "z" : "hi","u" : true, "v": false } '), | 45 ' {"x":3, "y": -4.5, "z" : "hi","u" : true, "v": false } '), |
46 equals({"x":3, "y": -4.5, "z" : "hi", "u" : true, "v": false })); | 46 equals({"x":3, "y": -4.5, "z" : "hi", "u" : true, "v": false })); |
47 | 47 |
48 expect(json.parse(' {"x":3, "y": -4.5, "z" : "hi" } '), | 48 expect(JSON.decode(' {"x":3, "y": -4.5, "z" : "hi" } '), |
49 equals({"x":3, "y": -4.5, "z" : "hi" })); | 49 equals({"x":3, "y": -4.5, "z" : "hi" })); |
50 | 50 |
51 expect(json.parse(' {"y": -4.5, "z" : "hi" ,"x":3 } '), | 51 expect(JSON.decode(' {"y": -4.5, "z" : "hi" ,"x":3 } '), |
52 equals({"y": -4.5, "z" : "hi" ,"x":3 })); | 52 equals({"y": -4.5, "z" : "hi" ,"x":3 })); |
53 | 53 |
54 expect(json.parse('{ " hi bob " :3, "": 4.5}'), | 54 expect(JSON.decode('{ " hi bob " :3, "": 4.5}'), |
55 equals({ " hi bob " :3, "": 4.5})); | 55 equals({ " hi bob " :3, "": 4.5})); |
56 | 56 |
57 expect(json.parse(' { "x" : { } } '), equals({ 'x' : {}})); | 57 expect(JSON.decode(' { "x" : { } } '), equals({ 'x' : {}})); |
58 expect(json.parse('{"x":{}}'), equals({ 'x' : {}})); | 58 expect(JSON.decode('{"x":{}}'), equals({ 'x' : {}})); |
59 | 59 |
60 // Nulls are tricky. | 60 // Nulls are tricky. |
61 expect(json.parse('{"w":null}'), equals({ 'w' : null})); | 61 expect(JSON.decode('{"w":null}'), equals({ 'w' : null})); |
62 | 62 |
63 expect(json.parse('{"x":{"w":null}}'), equals({"x":{"w":null}})); | 63 expect(JSON.decode('{"x":{"w":null}}'), equals({"x":{"w":null}})); |
64 | 64 |
65 expect(json.parse(' {"x":3, "y": -4.5, "z" : "hi",' | 65 expect(JSON.decode(' {"x":3, "y": -4.5, "z" : "hi",' |
66 '"w":null, "u" : true, "v": false } '), | 66 '"w":null, "u" : true, "v": false } '), |
67 equals({"x":3, "y": -4.5, "z" : "hi", | 67 equals({"x":3, "y": -4.5, "z" : "hi", |
68 "w":null, "u" : true, "v": false })); | 68 "w":null, "u" : true, "v": false })); |
69 | 69 |
70 expect(json.parse('{"x": {"a":3, "b": -4.5}, "y":[{}], ' | 70 expect(JSON.decode('{"x": {"a":3, "b": -4.5}, "y":[{}], ' |
71 '"z":"hi","w":{"c":null,"d":true}, "v":null}'), | 71 '"z":"hi","w":{"c":null,"d":true}, "v":null}'), |
72 equals({"x": {"a":3, "b": -4.5}, "y":[{}], | 72 equals({"x": {"a":3, "b": -4.5}, "y":[{}], |
73 "z":"hi","w":{"c":null,"d":true}, "v":null})); | 73 "z":"hi","w":{"c":null,"d":true}, "v":null})); |
74 }); | 74 }); |
75 | 75 |
76 test('stringify', () { | 76 test('stringify', () { |
77 // Scalars. | 77 // Scalars. |
78 expect(json.stringify(5), equals('5')); | 78 expect(JSON.encode(5), equals('5')); |
79 expect(json.stringify(-42), equals('-42')); | 79 expect(JSON.encode(-42), equals('-42')); |
80 // Dart does not guarantee a formatting for doubles, | 80 // Dart does not guarantee a formatting for doubles, |
81 // so reparse and compare to the original. | 81 // so reparse and compare to the original. |
82 validateRoundTrip(3.14); | 82 validateRoundTrip(3.14); |
83 expect(json.stringify(true), equals('true')); | 83 expect(JSON.encode(true), equals('true')); |
84 expect(json.stringify(false), equals('false')); | 84 expect(JSON.encode(false), equals('false')); |
85 expect(json.stringify(null), equals('null')); | 85 expect(JSON.encode(null), equals('null')); |
86 expect(json.stringify(' hi there" bob '), equals('" hi there\\" bob "')); | 86 expect(JSON.encode(' hi there" bob '), equals('" hi there\\" bob "')); |
87 expect(json.stringify('hi\\there'), equals('"hi\\\\there"')); | 87 expect(JSON.encode('hi\\there'), equals('"hi\\\\there"')); |
88 // TODO(devoncarew): these tests break the dartium build | 88 // TODO(devoncarew): these tests break the dartium build |
89 //expect(json.stringify('hi\nthere'), equals('"hi\\nthere"')); | 89 //expect(JSON.encode('hi\nthere'), equals('"hi\\nthere"')); |
90 //expect(json.stringify('hi\r\nthere'), equals('"hi\\r\\nthere"')); | 90 //expect(JSON.encode('hi\r\nthere'), equals('"hi\\r\\nthere"')); |
91 expect(json.stringify(''), equals('""')); | 91 expect(JSON.encode(''), equals('""')); |
92 | 92 |
93 // Lists. | 93 // Lists. |
94 expect(json.stringify([]), equals('[]')); | 94 expect(JSON.encode([]), equals('[]')); |
95 expect(json.stringify(new List(0)), equals('[]')); | 95 expect(JSON.encode(new List(0)), equals('[]')); |
96 expect(json.stringify(new List(3)), equals('[null,null,null]')); | 96 expect(JSON.encode(new List(3)), equals('[null,null,null]')); |
97 validateRoundTrip([3, -4.5, null, true, 'hi', false]); | 97 validateRoundTrip([3, -4.5, null, true, 'hi', false]); |
98 expect(json.stringify([[3], [], [null], ['hi', true]]), | 98 expect(JSON.encode([[3], [], [null], ['hi', true]]), |
99 equals('[[3],[],[null],["hi",true]]')); | 99 equals('[[3],[],[null],["hi",true]]')); |
100 | 100 |
101 // Maps. | 101 // Maps. |
102 expect(json.stringify({}), equals('{}')); | 102 expect(JSON.encode({}), equals('{}')); |
103 expect(json.stringify(new Map()), equals('{}')); | 103 expect(JSON.encode(new Map()), equals('{}')); |
104 expect(json.stringify({'x':{}}), equals('{"x":{}}')); | 104 expect(JSON.encode({'x':{}}), equals('{"x":{}}')); |
105 expect(json.stringify({'x':{'a':3}}), equals('{"x":{"a":3}}')); | 105 expect(JSON.encode({'x':{'a':3}}), equals('{"x":{"a":3}}')); |
106 | 106 |
107 // Dart does not guarantee an order on the keys | 107 // Dart does not guarantee an order on the keys |
108 // of a map literal, so reparse and compare to the original Map. | 108 // of a map literal, so reparse and compare to the original Map. |
109 validateRoundTrip( | 109 validateRoundTrip( |
110 {'x':3, 'y':-4.5, 'z':'hi', 'w':null, 'u':true, 'v':false}); | 110 {'x':3, 'y':-4.5, 'z':'hi', 'w':null, 'u':true, 'v':false}); |
111 validateRoundTrip({"x":3, "y":-4.5, "z":'hi'}); | 111 validateRoundTrip({"x":3, "y":-4.5, "z":'hi'}); |
112 validateRoundTrip({' hi bob ':3, '':4.5}); | 112 validateRoundTrip({' hi bob ':3, '':4.5}); |
113 validateRoundTrip( | 113 validateRoundTrip( |
114 {'x':{'a':3, 'b':-4.5}, 'y':[{}], 'z':'hi', 'w':{'c':null, 'd':true}, | 114 {'x':{'a':3, 'b':-4.5}, 'y':[{}], 'z':'hi', 'w':{'c':null, 'd':true}, |
115 'v':null}); | 115 'v':null}); |
116 | 116 |
117 expect(json.stringify(new ToJson(4)), "4"); | 117 expect(JSON.encode(new ToJson(4)), "4"); |
118 expect(json.stringify(new ToJson([4, "a"])), '[4,"a"]'); | 118 expect(JSON.encode(new ToJson([4, "a"])), '[4,"a"]'); |
119 expect(json.stringify(new ToJson([4, new ToJson({"x":42})])), | 119 expect(JSON.encode(new ToJson([4, new ToJson({"x":42})])), |
120 '[4,{"x":42}]'); | 120 '[4,{"x":42}]'); |
121 | 121 |
122 Expect.throws(() { | 122 Expect.throws(() { |
123 json.stringify([new ToJson(new ToJson(4))]); | 123 JSON.encode([new ToJson(new ToJson(4))]); |
124 }); | 124 }); |
125 | 125 |
126 Expect.throws(() { | 126 Expect.throws(() { |
127 json.stringify([new Object()]); | 127 JSON.encode([new Object()]); |
128 }); | 128 }); |
129 | 129 |
130 }); | 130 }); |
131 | 131 |
132 test('stringify throws if argument cannot be converted', () { | 132 test('stringify throws if argument cannot be converted', () { |
133 /** | 133 /** |
134 * Checks that we get an exception (rather than silently returning null) if | 134 * Checks that we get an exception (rather than silently returning null) if |
135 * we try to stringify something that cannot be converted to json. | 135 * we try to stringify something that cannot be converted to json. |
136 */ | 136 */ |
137 expect(() => json.stringify(new TestClass()), throws); | 137 expect(() => JSON.encode(new TestClass()), throws); |
138 }); | 138 }); |
139 } | 139 } |
140 | 140 |
141 class TestClass { | 141 class TestClass { |
142 int x; | 142 int x; |
143 String y; | 143 String y; |
144 | 144 |
145 TestClass() : x = 3, y = 'joe' { } | 145 TestClass() : x = 3, y = 'joe' { } |
146 } | 146 } |
147 | 147 |
148 class ToJson { | 148 class ToJson { |
149 final object; | 149 final object; |
150 const ToJson(this.object); | 150 const ToJson(this.object); |
151 toJson() => object; | 151 toJson() => object; |
152 } | 152 } |
153 | 153 |
154 /** | 154 /** |
155 * Checks that the argument can be converted to a JSON string and | 155 * Checks that the argument can be converted to a JSON string and |
156 * back, and produce something equivalent to the argument. | 156 * back, and produce something equivalent to the argument. |
157 */ | 157 */ |
158 validateRoundTrip(expected) { | 158 validateRoundTrip(expected) { |
159 expect(json.parse(json.stringify(expected)), equals(expected)); | 159 expect(JSON.decode(JSON.encode(expected)), equals(expected)); |
160 } | 160 } |
161 | 161 |
162 | 162 |
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