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Side by Side Diff: tests/lib/convert/json_lib_test.dart

Issue 2771453003: Format all tests. (Closed)
Patch Set: Format files Created 3 years, 8 months ago
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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
6 import 'package:unittest/unittest.dart'; 7 import 'package:unittest/unittest.dart';
7 import 'dart:convert'; 8 import 'dart:convert';
8 9
9 main() { 10 main() {
10 test('Parse', () { 11 test('Parse', () {
11 // Scalars. 12 // Scalars.
12 expect(JSON.decode(' 5 '), equals(5)); 13 expect(JSON.decode(' 5 '), equals(5));
13 expect(JSON.decode(' -42 '), equals(-42)); 14 expect(JSON.decode(' -42 '), equals(-42));
14 expect(JSON.decode(' 3e0 '), equals(3)); 15 expect(JSON.decode(' 3e0 '), equals(3));
15 expect(JSON.decode(' 3.14 '), equals(3.14)); 16 expect(JSON.decode(' 3.14 '), equals(3.14));
16 expect(JSON.decode('true '), isTrue); 17 expect(JSON.decode('true '), isTrue);
17 expect(JSON.decode(' false'), isFalse); 18 expect(JSON.decode(' false'), isFalse);
18 expect(JSON.decode(' null '), isNull); 19 expect(JSON.decode(' null '), isNull);
19 expect(JSON.decode('\n\rnull\t'), isNull); 20 expect(JSON.decode('\n\rnull\t'), isNull);
20 expect(JSON.decode(' "hi there\\" bob" '), equals('hi there" bob')); 21 expect(JSON.decode(' "hi there\\" bob" '), equals('hi there" bob'));
21 expect(JSON.decode(' "" '), isEmpty); 22 expect(JSON.decode(' "" '), isEmpty);
22 23
23 // Lists. 24 // Lists.
24 expect(JSON.decode(' [] '), isEmpty); 25 expect(JSON.decode(' [] '), isEmpty);
25 expect(JSON.decode('[ ]'), isEmpty); 26 expect(JSON.decode('[ ]'), isEmpty);
26 expect(JSON.decode(' [3, -4.5, true, "hi", false] '), 27 expect(JSON.decode(' [3, -4.5, true, "hi", false] '),
27 equals([3, -4.5, true, 'hi', false])); 28 equals([3, -4.5, true, 'hi', false]));
28 // Nulls are tricky. 29 // Nulls are tricky.
29 expect(JSON.decode('[null]'), orderedEquals([null])); 30 expect(JSON.decode('[null]'), orderedEquals([null]));
30 expect(JSON.decode(' [3, -4.5, null, true, "hi", false] '), 31 expect(JSON.decode(' [3, -4.5, null, true, "hi", false] '),
31 equals([3, -4.5, null, true, 'hi', false])); 32 equals([3, -4.5, null, true, 'hi', false]));
32 expect(JSON.decode('[[null]]'), equals([[null]])); 33 expect(
33 expect(JSON.decode(' [ [3], [], [null], ["hi", true]] '), 34 JSON.decode('[[null]]'),
34 equals([[3], [], [null], ['hi', true]])); 35 equals([
36 [null]
37 ]));
38 expect(
39 JSON.decode(' [ [3], [], [null], ["hi", true]] '),
40 equals([
41 [3],
42 [],
43 [null],
44 ['hi', true]
45 ]));
35 46
36 // Maps. 47 // Maps.
37 expect(JSON.decode(' {} '), isEmpty); 48 expect(JSON.decode(' {} '), isEmpty);
38 expect(JSON.decode('{ }'), isEmpty); 49 expect(JSON.decode('{ }'), isEmpty);
39 50
40 expect(JSON.decode( 51 expect(
41 ' {"x":3, "y": -4.5, "z" : "hi","u" : true, "v": false } '), 52 JSON.decode(
42 equals({"x":3, "y": -4.5, "z" : "hi", "u" : true, "v": false })); 53 ' {"x":3, "y": -4.5, "z" : "hi","u" : true, "v": false } '),
54 equals({"x": 3, "y": -4.5, "z": "hi", "u": true, "v": false}));
43 55
44 expect(JSON.decode(' {"x":3, "y": -4.5, "z" : "hi" } '), 56 expect(JSON.decode(' {"x":3, "y": -4.5, "z" : "hi" } '),
45 equals({"x":3, "y": -4.5, "z" : "hi" })); 57 equals({"x": 3, "y": -4.5, "z": "hi"}));
46 58
47 expect(JSON.decode(' {"y": -4.5, "z" : "hi" ,"x":3 } '), 59 expect(JSON.decode(' {"y": -4.5, "z" : "hi" ,"x":3 } '),
48 equals({"y": -4.5, "z" : "hi" ,"x":3 })); 60 equals({"y": -4.5, "z": "hi", "x": 3}));
49 61
50 expect(JSON.decode('{ " hi bob " :3, "": 4.5}'), 62 expect(JSON.decode('{ " hi bob " :3, "": 4.5}'),
51 equals({ " hi bob " :3, "": 4.5})); 63 equals({" hi bob ": 3, "": 4.5}));
52 64
53 expect(JSON.decode(' { "x" : { } } '), equals({ 'x' : {}})); 65 expect(JSON.decode(' { "x" : { } } '), equals({'x': {}}));
54 expect(JSON.decode('{"x":{}}'), equals({ 'x' : {}})); 66 expect(JSON.decode('{"x":{}}'), equals({'x': {}}));
55 67
56 // Nulls are tricky. 68 // Nulls are tricky.
57 expect(JSON.decode('{"w":null}'), equals({ 'w' : null})); 69 expect(JSON.decode('{"w":null}'), equals({'w': null}));
58 70
59 expect(JSON.decode('{"x":{"w":null}}'), equals({"x":{"w":null}})); 71 expect(
72 JSON.decode('{"x":{"w":null}}'),
73 equals({
74 "x": {"w": null}
75 }));
60 76
61 expect(JSON.decode(' {"x":3, "y": -4.5, "z" : "hi",' 77 expect(
62 '"w":null, "u" : true, "v": false } '), 78 JSON.decode(' {"x":3, "y": -4.5, "z" : "hi",'
63 equals({"x":3, "y": -4.5, "z" : "hi", 79 '"w":null, "u" : true, "v": false } '),
64 "w":null, "u" : true, "v": false })); 80 equals(
81 {"x": 3, "y": -4.5, "z": "hi", "w": null, "u": true, "v": false}));
65 82
66 expect(JSON.decode('{"x": {"a":3, "b": -4.5}, "y":[{}], ' 83 expect(
67 '"z":"hi","w":{"c":null,"d":true}, "v":null}'), 84 JSON.decode('{"x": {"a":3, "b": -4.5}, "y":[{}], '
68 equals({"x": {"a":3, "b": -4.5}, "y":[{}], 85 '"z":"hi","w":{"c":null,"d":true}, "v":null}'),
69 "z":"hi","w":{"c":null,"d":true}, "v":null})); 86 equals({
87 "x": {"a": 3, "b": -4.5},
88 "y": [{}],
89 "z": "hi",
90 "w": {"c": null, "d": true},
91 "v": null
92 }));
70 }); 93 });
71 94
72 test('stringify', () { 95 test('stringify', () {
73 // Scalars. 96 // Scalars.
74 expect(JSON.encode(5), equals('5')); 97 expect(JSON.encode(5), equals('5'));
75 expect(JSON.encode(-42), equals('-42')); 98 expect(JSON.encode(-42), equals('-42'));
76 // Dart does not guarantee a formatting for doubles, 99 // Dart does not guarantee a formatting for doubles,
77 // so reparse and compare to the original. 100 // so reparse and compare to the original.
78 validateRoundTrip(3.14); 101 validateRoundTrip(3.14);
79 expect(JSON.encode(true), equals('true')); 102 expect(JSON.encode(true), equals('true'));
80 expect(JSON.encode(false), equals('false')); 103 expect(JSON.encode(false), equals('false'));
81 expect(JSON.encode(null), equals('null')); 104 expect(JSON.encode(null), equals('null'));
82 expect(JSON.encode(' hi there" bob '), equals('" hi there\\" bob "')); 105 expect(JSON.encode(' hi there" bob '), equals('" hi there\\" bob "'));
83 expect(JSON.encode('hi\\there'), equals('"hi\\\\there"')); 106 expect(JSON.encode('hi\\there'), equals('"hi\\\\there"'));
84 expect(JSON.encode('hi\nthere'), equals('"hi\\nthere"')); 107 expect(JSON.encode('hi\nthere'), equals('"hi\\nthere"'));
85 expect(JSON.encode('hi\r\nthere'), equals('"hi\\r\\nthere"')); 108 expect(JSON.encode('hi\r\nthere'), equals('"hi\\r\\nthere"'));
86 expect(JSON.encode(''), equals('""')); 109 expect(JSON.encode(''), equals('""'));
87 110
88 // Lists. 111 // Lists.
89 expect(JSON.encode([]), equals('[]')); 112 expect(JSON.encode([]), equals('[]'));
90 expect(JSON.encode(new List(0)), equals('[]')); 113 expect(JSON.encode(new List(0)), equals('[]'));
91 expect(JSON.encode(new List(3)), equals('[null,null,null]')); 114 expect(JSON.encode(new List(3)), equals('[null,null,null]'));
92 validateRoundTrip([3, -4.5, null, true, 'hi', false]); 115 validateRoundTrip([3, -4.5, null, true, 'hi', false]);
93 expect(JSON.encode([[3], [], [null], ['hi', true]]), 116 expect(
94 equals('[[3],[],[null],["hi",true]]')); 117 JSON.encode([
118 [3],
119 [],
120 [null],
121 ['hi', true]
122 ]),
123 equals('[[3],[],[null],["hi",true]]'));
95 124
96 // Maps. 125 // Maps.
97 expect(JSON.encode({}), equals('{}')); 126 expect(JSON.encode({}), equals('{}'));
98 expect(JSON.encode(new Map()), equals('{}')); 127 expect(JSON.encode(new Map()), equals('{}'));
99 expect(JSON.encode({'x':{}}), equals('{"x":{}}')); 128 expect(JSON.encode({'x': {}}), equals('{"x":{}}'));
100 expect(JSON.encode({'x':{'a':3}}), equals('{"x":{"a":3}}')); 129 expect(
130 JSON.encode({
131 'x': {'a': 3}
132 }),
133 equals('{"x":{"a":3}}'));
101 134
102 // Dart does not guarantee an order on the keys 135 // Dart does not guarantee an order on the keys
103 // of a map literal, so reparse and compare to the original Map. 136 // of a map literal, so reparse and compare to the original Map.
104 validateRoundTrip( 137 validateRoundTrip(
105 {'x':3, 'y':-4.5, 'z':'hi', 'w':null, 'u':true, 'v':false}); 138 {'x': 3, 'y': -4.5, 'z': 'hi', 'w': null, 'u': true, 'v': false});
106 validateRoundTrip({"x":3, "y":-4.5, "z":'hi'}); 139 validateRoundTrip({"x": 3, "y": -4.5, "z": 'hi'});
107 validateRoundTrip({' hi bob ':3, '':4.5}); 140 validateRoundTrip({' hi bob ': 3, '': 4.5});
108 validateRoundTrip( 141 validateRoundTrip({
109 {'x':{'a':3, 'b':-4.5}, 'y':[{}], 'z':'hi', 'w':{'c':null, 'd':true}, 142 'x': {'a': 3, 'b': -4.5},
110 'v':null}); 143 'y': [{}],
144 'z': 'hi',
145 'w': {'c': null, 'd': true},
146 'v': null
147 });
111 148
112 expect(JSON.encode(new ToJson(4)), "4"); 149 expect(JSON.encode(new ToJson(4)), "4");
113 expect(JSON.encode(new ToJson([4, "a"])), '[4,"a"]'); 150 expect(JSON.encode(new ToJson([4, "a"])), '[4,"a"]');
114 expect(JSON.encode(new ToJson([4, new ToJson({"x":42})])), 151 expect(
115 '[4,{"x":42}]'); 152 JSON.encode(new ToJson([
153 4,
154 new ToJson({"x": 42})
155 ])),
156 '[4,{"x":42}]');
116 157
117 expect(() { 158 expect(() {
118 JSON.encode([new ToJson(new ToJson(4))]); 159 JSON.encode([new ToJson(new ToJson(4))]);
119 }, throwsJsonError); 160 }, throwsJsonError);
120 161
121 expect(() { 162 expect(() {
122 JSON.encode([new Object()]); 163 JSON.encode([new Object()]);
123 }, throwsJsonError); 164 }, throwsJsonError);
124
125 }); 165 });
126 166
127 test('stringify throws if argument cannot be converted', () { 167 test('stringify throws if argument cannot be converted', () {
128 /** 168 /**
129 * Checks that we get an exception (rather than silently returning null) if 169 * Checks that we get an exception (rather than silently returning null) if
130 * we try to stringify something that cannot be converted to json. 170 * we try to stringify something that cannot be converted to json.
131 */ 171 */
132 expect(() => JSON.encode(new TestClass()), throwsJsonError); 172 expect(() => JSON.encode(new TestClass()), throwsJsonError);
133 }); 173 });
134 174
135 test('stringify throws if toJson throws', () { 175 test('stringify throws if toJson throws', () {
136 expect(() => JSON.encode(new ToJsoner("bad", throws: true)), 176 expect(
137 throwsJsonError); 177 () => JSON.encode(new ToJsoner("bad", throws: true)), throwsJsonError);
138 }); 178 });
139 179
140 test('stringify throws if toJson returns non-serializable value', () { 180 test('stringify throws if toJson returns non-serializable value', () {
141 expect(() => JSON.encode(new ToJsoner(new TestClass())), 181 expect(() => JSON.encode(new ToJsoner(new TestClass())), throwsJsonError);
142 throwsJsonError);
143 }); 182 });
144 183
145 test('stringify throws on cyclic values', () { 184 test('stringify throws on cyclic values', () {
146 var a = []; 185 var a = [];
147 var b = a; 186 var b = a;
148 for (int i = 0; i < 50; i++) { 187 for (int i = 0; i < 50; i++) {
149 b = [b]; 188 b = [b];
150 } 189 }
151 a.add(b); 190 a.add(b);
152 expect(() => JSON.encode(a), throwsJsonError); 191 expect(() => JSON.encode(a), throwsJsonError);
153 }); 192 });
154 } 193 }
155 194
156 class TestClass { 195 class TestClass {
157 int x; 196 int x;
158 String y; 197 String y;
159 198
160 TestClass() : x = 3, y = 'joe' { } 199 TestClass()
200 : x = 3,
201 y = 'joe' {}
161 } 202 }
162 203
163 class ToJsoner { 204 class ToJsoner {
164 final Object returnValue; 205 final Object returnValue;
165 final bool throws; 206 final bool throws;
166 ToJsoner(this.returnValue, {this.throws}); 207 ToJsoner(this.returnValue, {this.throws});
167 Object toJson() { 208 Object toJson() {
168 if (throws) throw returnValue; 209 if (throws) throw returnValue;
169 return returnValue; 210 return returnValue;
170 } 211 }
171 } 212 }
172 213
173 class ToJson { 214 class ToJson {
174 final object; 215 final object;
175 const ToJson(this.object); 216 const ToJson(this.object);
176 toJson() => object; 217 toJson() => object;
177 } 218 }
178 219
179 var throwsJsonError = 220 var throwsJsonError = throwsA(new isInstanceOf<JsonUnsupportedObjectError>());
180 throwsA(new isInstanceOf<JsonUnsupportedObjectError>());
181 221
182 /** 222 /**
183 * Checks that the argument can be converted to a JSON string and 223 * Checks that the argument can be converted to a JSON string and
184 * back, and produce something equivalent to the argument. 224 * back, and produce something equivalent to the argument.
185 */ 225 */
186 validateRoundTrip(expected) { 226 validateRoundTrip(expected) {
187 expect(JSON.decode(JSON.encode(expected)), equals(expected)); 227 expect(JSON.decode(JSON.encode(expected)), equals(expected));
188 } 228 }
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