|
| 1 | +/*global Mocha, assert*/ |
| 2 | +var Sinon = require("sinon") |
| 3 | +var stringify = require('../../vendor/json-stringify-safe/stringify'); |
| 4 | + |
| 5 | +function jsonify(obj) { return JSON.stringify(obj, null, 2) } |
| 6 | + |
| 7 | +describe("Stringify", function() { |
| 8 | + it("must stringify circular objects", function() { |
| 9 | + var obj = {name: "Alice"} |
| 10 | + obj.self = obj |
| 11 | + var json = stringify(obj, null, 2) |
| 12 | + assert.deepEqual(json, jsonify({name: "Alice", self: "[Circular ~]"})) |
| 13 | + }) |
| 14 | + |
| 15 | + it("must stringify circular objects with intermediaries", function() { |
| 16 | + var obj = {name: "Alice"} |
| 17 | + obj.identity = {self: obj} |
| 18 | + var json = stringify(obj, null, 2) |
| 19 | + assert.deepEqual(json, jsonify({name: "Alice", identity: {self: "[Circular ~]"}})) |
| 20 | + }) |
| 21 | + |
| 22 | + it("must stringify circular objects deeper", function() { |
| 23 | + var obj = {name: "Alice", child: {name: "Bob"}} |
| 24 | + obj.child.self = obj.child |
| 25 | + |
| 26 | + assert.deepEqual(stringify(obj, null, 2), jsonify({ |
| 27 | + name: "Alice", |
| 28 | + child: {name: "Bob", self: "[Circular ~.child]"} |
| 29 | + })) |
| 30 | + }) |
| 31 | + |
| 32 | + it("must stringify circular objects deeper with intermediaries", function() { |
| 33 | + var obj = {name: "Alice", child: {name: "Bob"}} |
| 34 | + obj.child.identity = {self: obj.child} |
| 35 | + |
| 36 | + assert.deepEqual(stringify(obj, null, 2), jsonify({ |
| 37 | + name: "Alice", |
| 38 | + child: {name: "Bob", identity: {self: "[Circular ~.child]"}} |
| 39 | + })) |
| 40 | + }) |
| 41 | + |
| 42 | + it("must stringify circular objects in an array", function() { |
| 43 | + var obj = {name: "Alice"} |
| 44 | + obj.self = [obj, obj] |
| 45 | + |
| 46 | + assert.deepEqual(stringify(obj, null, 2), jsonify({ |
| 47 | + name: "Alice", self: ["[Circular ~]", "[Circular ~]"] |
| 48 | + })) |
| 49 | + }) |
| 50 | + |
| 51 | + it("must stringify circular objects deeper in an array", function() { |
| 52 | + var obj = {name: "Alice", children: [{name: "Bob"}, {name: "Eve"}]} |
| 53 | + obj.children[0].self = obj.children[0] |
| 54 | + obj.children[1].self = obj.children[1] |
| 55 | + |
| 56 | + assert.deepEqual(stringify(obj, null, 2), jsonify({ |
| 57 | + name: "Alice", |
| 58 | + children: [ |
| 59 | + {name: "Bob", self: "[Circular ~.children.0]"}, |
| 60 | + {name: "Eve", self: "[Circular ~.children.1]"} |
| 61 | + ] |
| 62 | + })) |
| 63 | + }) |
| 64 | + |
| 65 | + it("must stringify circular arrays", function() { |
| 66 | + var obj = [] |
| 67 | + obj.push(obj) |
| 68 | + obj.push(obj) |
| 69 | + var json = stringify(obj, null, 2) |
| 70 | + assert.deepEqual(json, jsonify(["[Circular ~]", "[Circular ~]"])) |
| 71 | + }) |
| 72 | + |
| 73 | + it("must stringify circular arrays with intermediaries", function() { |
| 74 | + var obj = [] |
| 75 | + obj.push({name: "Alice", self: obj}) |
| 76 | + obj.push({name: "Bob", self: obj}) |
| 77 | + |
| 78 | + assert.deepEqual(stringify(obj, null, 2), jsonify([ |
| 79 | + {name: "Alice", self: "[Circular ~]"}, |
| 80 | + {name: "Bob", self: "[Circular ~]"} |
| 81 | + ])) |
| 82 | + }) |
| 83 | + |
| 84 | + it("must stringify repeated objects in objects", function() { |
| 85 | + var obj = {} |
| 86 | + var alice = {name: "Alice"} |
| 87 | + obj.alice1 = alice |
| 88 | + obj.alice2 = alice |
| 89 | + |
| 90 | + assert.deepEqual(stringify(obj, null, 2), jsonify({ |
| 91 | + alice1: {name: "Alice"}, |
| 92 | + alice2: {name: "Alice"} |
| 93 | + })) |
| 94 | + }) |
| 95 | + |
| 96 | + it("must stringify repeated objects in arrays", function() { |
| 97 | + var alice = {name: "Alice"} |
| 98 | + var obj = [alice, alice] |
| 99 | + var json = stringify(obj, null, 2) |
| 100 | + assert.deepEqual(json, jsonify([{name: "Alice"}, {name: "Alice"}])) |
| 101 | + }) |
| 102 | + |
| 103 | + it("must call given decycler and use its output", function() { |
| 104 | + var obj = {} |
| 105 | + obj.a = obj |
| 106 | + obj.b = obj |
| 107 | + |
| 108 | + var decycle = Sinon.spy(function() { return decycle.callCount }) |
| 109 | + var json = stringify(obj, null, 2, decycle) |
| 110 | + assert.deepEqual(json, jsonify({a: 1, b: 2}, null, 2)) |
| 111 | + |
| 112 | + assert.strictEqual(decycle.callCount, 2) |
| 113 | + assert.strictEqual(decycle.thisValues[0], obj) |
| 114 | + assert.strictEqual(decycle.args[0][0], "a") |
| 115 | + assert.strictEqual(decycle.args[0][1], obj) |
| 116 | + assert.strictEqual(decycle.thisValues[1], obj) |
| 117 | + assert.strictEqual(decycle.args[1][0], "b") |
| 118 | + assert.strictEqual(decycle.args[1][1], obj) |
| 119 | + }) |
| 120 | + |
| 121 | + it("must call replacer and use its output", function() { |
| 122 | + var obj = {name: "Alice", child: {name: "Bob"}} |
| 123 | + |
| 124 | + var replacer = Sinon.spy(bangString) |
| 125 | + var json = stringify(obj, replacer, 2) |
| 126 | + assert.deepEqual(json, jsonify({name: "Alice!", child: {name: "Bob!"}})) |
| 127 | + |
| 128 | + assert.strictEqual(replacer.callCount, 4) |
| 129 | + assert.strictEqual(replacer.args[0][0], "") |
| 130 | + assert.strictEqual(replacer.args[0][1], obj) |
| 131 | + assert.strictEqual(replacer.thisValues[1], obj) |
| 132 | + assert.strictEqual(replacer.args[1][0], "name") |
| 133 | + assert.strictEqual(replacer.args[1][1], "Alice") |
| 134 | + assert.strictEqual(replacer.thisValues[2], obj) |
| 135 | + assert.strictEqual(replacer.args[2][0], "child") |
| 136 | + assert.strictEqual(replacer.args[2][1], obj.child) |
| 137 | + assert.strictEqual(replacer.thisValues[3], obj.child) |
| 138 | + assert.strictEqual(replacer.args[3][0], "name") |
| 139 | + assert.strictEqual(replacer.args[3][1], "Bob") |
| 140 | + }) |
| 141 | + |
| 142 | + it("must call replacer after describing circular references", function() { |
| 143 | + var obj = {name: "Alice"} |
| 144 | + obj.self = obj |
| 145 | + |
| 146 | + var replacer = Sinon.spy(bangString) |
| 147 | + var json = stringify(obj, replacer, 2) |
| 148 | + assert.deepEqual(json, jsonify({name: "Alice!", self: "[Circular ~]!"})) |
| 149 | + |
| 150 | + assert.strictEqual(replacer.callCount, 3) |
| 151 | + assert.strictEqual(replacer.args[0][0], "") |
| 152 | + assert.strictEqual(replacer.args[0][1], obj) |
| 153 | + assert.strictEqual(replacer.thisValues[1], obj) |
| 154 | + assert.strictEqual(replacer.args[1][0], "name") |
| 155 | + assert.strictEqual(replacer.args[1][1], "Alice") |
| 156 | + assert.strictEqual(replacer.thisValues[2], obj) |
| 157 | + assert.strictEqual(replacer.args[2][0], "self") |
| 158 | + assert.strictEqual(replacer.args[2][1], "[Circular ~]") |
| 159 | + }) |
| 160 | + |
| 161 | + it("must call given decycler and use its output for nested objects", |
| 162 | + function() { |
| 163 | + var obj = {} |
| 164 | + obj.a = obj |
| 165 | + obj.b = {self: obj} |
| 166 | + |
| 167 | + var decycle = Sinon.spy(function() { return decycle.callCount }) |
| 168 | + var json = stringify(obj, null, 2, decycle) |
| 169 | + assert.deepEqual(json, jsonify({a: 1, b: {self: 2}})) |
| 170 | + |
| 171 | + assert.strictEqual(decycle.callCount, 2) |
| 172 | + assert.strictEqual(decycle.args[0][0], "a") |
| 173 | + assert.strictEqual(decycle.args[0][1], obj) |
| 174 | + assert.strictEqual(decycle.args[1][0], "self") |
| 175 | + assert.strictEqual(decycle.args[1][1], obj) |
| 176 | + }) |
| 177 | + |
| 178 | + it("must use decycler's output when it returned null", function() { |
| 179 | + var obj = {a: "b"} |
| 180 | + obj.self = obj |
| 181 | + obj.selves = [obj, obj] |
| 182 | + |
| 183 | + function decycle() { return null } |
| 184 | + assert.deepEqual(stringify(obj, null, 2, decycle), jsonify({ |
| 185 | + a: "b", |
| 186 | + self: null, |
| 187 | + selves: [null, null] |
| 188 | + })) |
| 189 | + }) |
| 190 | + |
| 191 | + it("must use decycler's output when it returned undefined", function() { |
| 192 | + var obj = {a: "b"} |
| 193 | + obj.self = obj |
| 194 | + obj.selves = [obj, obj] |
| 195 | + |
| 196 | + function decycle() {} |
| 197 | + assert.deepEqual(stringify(obj, null, 2, decycle), jsonify({ |
| 198 | + a: "b", |
| 199 | + selves: [null, null] |
| 200 | + })) |
| 201 | + }) |
| 202 | + |
| 203 | + it("must throw given a decycler that returns a cycle", function() { |
| 204 | + var obj = {} |
| 205 | + obj.self = obj |
| 206 | + var err |
| 207 | + function identity(key, value) { return value } |
| 208 | + try { stringify(obj, null, 2, identity) } catch (ex) { err = ex } |
| 209 | + assert.ok(err instanceof TypeError) |
| 210 | + }) |
| 211 | + |
| 212 | + describe(".getSerialize", function() { |
| 213 | + it("must stringify circular objects", function() { |
| 214 | + var obj = {a: "b"} |
| 215 | + obj.circularRef = obj |
| 216 | + obj.list = [obj, obj] |
| 217 | + |
| 218 | + var json = JSON.stringify(obj, stringify.getSerialize(), 2) |
| 219 | + assert.deepEqual(json, jsonify({ |
| 220 | + "a": "b", |
| 221 | + "circularRef": "[Circular ~]", |
| 222 | + "list": ["[Circular ~]", "[Circular ~]"] |
| 223 | + })) |
| 224 | + }) |
| 225 | + |
| 226 | + // This is the behavior as of Mar 3, 2015. |
| 227 | + // The serializer function keeps state inside the returned function and |
| 228 | + // so far I'm not sure how to not do that. JSON.stringify's replacer is not |
| 229 | + // called _after_ serialization. |
| 230 | + xit("must return a function that could be called twice", function() { |
| 231 | + var obj = {name: "Alice"} |
| 232 | + obj.self = obj |
| 233 | + |
| 234 | + var json |
| 235 | + var serializer = stringify.getSerialize() |
| 236 | + |
| 237 | + json = JSON.stringify(obj, serializer, 2) |
| 238 | + assert.deepEqual(json, jsonify({name: "Alice", self: "[Circular ~]"})) |
| 239 | + |
| 240 | + json = JSON.stringify(obj, serializer, 2) |
| 241 | + assert.deepEqual(json, jsonify({name: "Alice", self: "[Circular ~]"})) |
| 242 | + }) |
| 243 | + }) |
| 244 | +}) |
| 245 | + |
| 246 | +function bangString(key, value) { |
| 247 | + return typeof value == "string" ? value + "!" : value |
| 248 | +} |
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