js/src/tests/ecma_5/extensions/es5ish-defineGetter-defineSetter.js@6474c204b198
js/src/tests/ecma_5/extensions/es5ish-defineGetter-defineSetter.js
Wed, 31 Dec 2014 06:09:35 +0100
- author
- Michael Schloh von Bennewitz <michael@schloh.com>
- date
- Wed, 31 Dec 2014 06:09:35 +0100
- changeset 0
- 6474c204b198
- permissions
- -rw-r--r--
Cloned upstream origin tor-browser at tor-browser-31.3.0esr-4.5-1-build1
revision ID fc1c9ff7c1b2defdbc039f12214767608f46423f for hacking purpose.
1 // Any copyright is dedicated to the Public Domain.
2 // http://creativecommons.org/licenses/publicdomain/
4 //-----------------------------------------------------------------------------
5 var BUGNUMBER = 715821;
6 var summary = "Implement __define[GS]etter__ using Object.defineProperty";
8 print(BUGNUMBER + ": " + summary);
10 /*************
11 * UTILITIES *
12 *************/
14 function s(desc)
15 {
16 if (typeof desc === "undefined")
17 return "<undefined>";
18 assertEq(typeof desc, "object");
19 assertEq(desc !== null, true);
21 var str = "<enumerable: <" + desc.enumerable + ">, " +
22 " configurable: <" + desc.configurable + ">,";
24 if (desc.hasOwnProperty("value"))
25 {
26 return str +
27 " value: <" + desc.value + ">," +
28 " writable: <" + desc.writable + ">>";
29 }
31 return str +
32 " get: <" + desc.get + ">," +
33 " set: <" + desc.set + ">>";
34 }
36 function checkField(field, desc, expected)
37 {
38 var present = desc.hasOwnProperty(field);
39 assertEq(present, expected.hasOwnProperty(field),
40 field + " presence mismatch (got " + s(desc) + ", expected " + s(expected) + ")");
41 if (present)
42 {
43 assertEq(desc[field], expected[field],
44 field + " value mismatch (got " + s(desc) + ", expected " + s(expected) + ")");
45 }
46 }
48 function check(obj, prop, expected)
49 {
50 var desc = Object.getOwnPropertyDescriptor(obj, prop);
51 assertEq(typeof desc, typeof expected,
52 "type mismatch (got " + s(desc) + ", expected " + s(expected) + ")");
54 assertEq(desc.hasOwnProperty("get"), desc.hasOwnProperty("set"),
55 "bad descriptor: " + s(desc));
56 assertEq(desc.hasOwnProperty("value"), desc.hasOwnProperty("writable"),
57 "bad descriptor: " + s(desc));
59 assertEq(desc.hasOwnProperty("get"), !desc.hasOwnProperty("value"),
60 "bad descriptor: " + s(desc));
62 checkField("get", desc, expected);
63 checkField("set", desc, expected);
64 checkField("value", desc, expected);
65 checkField("writable", desc, expected);
66 checkField("enumerable", desc, expected);
67 checkField("configurable", desc, expected);
68 }
70 function expectTypeError(f)
71 {
72 try
73 {
74 f();
75 throw new Error("no error thrown");
76 }
77 catch (e)
78 {
79 assertEq(e instanceof TypeError, true,
80 "wrong error thrown: got " + e + ", not a TypeError");
81 }
82 }
84 /**************
85 * BEGIN TEST *
86 **************/
88 // Adding a new getter, overwriting an existing one
90 function g1() { }
91 var gobj = {};
92 gobj.__defineGetter__("foo", g1);
93 check(gobj, "foo", { get: g1, set: undefined, enumerable: true, configurable: true });
95 function g2() { }
96 gobj.__defineGetter__("foo", g2);
97 check(gobj, "foo", { get: g2, set: undefined, enumerable: true, configurable: true });
99 /******************************************************************************/
101 // Adding a new setter, overwriting an existing one
103 function s1() { }
104 var sobj = {};
105 sobj.__defineSetter__("bar", s1);
106 check(sobj, "bar", { get: undefined, set: s1, enumerable: true, configurable: true });
108 function s2() { }
109 sobj.__defineSetter__("bar", s2);
110 check(sobj, "bar", { get: undefined, set: s2, enumerable: true, configurable: true });
112 /******************************************************************************/
114 // Adding a new getter, then adding a setter
115 // Changing an existing accessor's enumerability, then "null"-changing the accessor
116 // Changing an accessor's configurability, then "null"-changing and real-changing the accessor
118 function g3() { }
119 var gsobj = {};
120 gsobj.__defineGetter__("baz", g3);
121 check(gsobj, "baz", { get: g3, set: undefined, enumerable: true, configurable: true });
123 function s3() { }
124 gsobj.__defineSetter__("baz", s3);
125 check(gsobj, "baz", { get: g3, set: s3, enumerable: true, configurable: true });
127 Object.defineProperty(gsobj, "baz", { enumerable: false });
128 check(gsobj, "baz", { get: g3, set: s3, enumerable: false, configurable: true });
130 gsobj.__defineGetter__("baz", g3);
131 check(gsobj, "baz", { get: g3, set: s3, enumerable: true, configurable: true });
133 Object.defineProperty(gsobj, "baz", { enumerable: false });
134 check(gsobj, "baz", { get: g3, set: s3, enumerable: false, configurable: true });
136 gsobj.__defineSetter__("baz", s3);
137 check(gsobj, "baz", { get: g3, set: s3, enumerable: true, configurable: true });
139 Object.defineProperty(gsobj, "baz", { configurable: false });
140 expectTypeError(function() { gsobj.__defineSetter__("baz", s2); });
141 expectTypeError(function() { gsobj.__defineSetter__("baz", s3); });
142 check(gsobj, "baz", { get: g3, set: s3, enumerable: true, configurable: false });
144 /******************************************************************************/
146 // Adding a new setter, then adding a getter
147 // Changing an existing accessor's enumerability, then "null"-changing the accessor
148 // Changing an accessor's configurability, then "null"-changing and real-changing the accessor
150 function s4() { }
151 var sgobj = {};
152 sgobj.__defineSetter__("baz", s4);
153 check(sgobj, "baz", { get: undefined, set: s4, enumerable: true, configurable: true });
155 function g4() { }
156 sgobj.__defineGetter__("baz", g4);
157 check(sgobj, "baz", { get: g4, set: s4, enumerable: true, configurable: true });
159 Object.defineProperty(sgobj, "baz", { enumerable: false });
160 check(sgobj, "baz", { get: g4, set: s4, enumerable: false, configurable: true });
162 sgobj.__defineSetter__("baz", s4);
163 check(sgobj, "baz", { get: g4, set: s4, enumerable: true, configurable: true });
165 Object.defineProperty(sgobj, "baz", { enumerable: false });
166 check(sgobj, "baz", { get: g4, set: s4, enumerable: false, configurable: true });
168 sgobj.__defineSetter__("baz", s4);
169 check(sgobj, "baz", { get: g4, set: s4, enumerable: true, configurable: true });
171 Object.defineProperty(sgobj, "baz", { configurable: false });
172 expectTypeError(function() { sgobj.__defineGetter__("baz", g3); });
173 expectTypeError(function() { sgobj.__defineSetter__("baz", s4); });
174 check(sgobj, "baz", { get: g4, set: s4, enumerable: true, configurable: false });
176 /******************************************************************************/
178 // Adding a getter over a writable data property
180 function g5() { }
181 var gover = { quux: 17 };
182 check(gover, "quux", { value: 17, writable: true, enumerable: true, configurable: true });
184 gover.__defineGetter__("quux", g5);
185 check(gover, "quux", { get: g5, set: undefined, enumerable: true, configurable: true });
187 /******************************************************************************/
189 // Adding a setter over a writable data property
191 function s5() { }
192 var sover = { quux: 17 };
193 check(sover, "quux", { value: 17, writable: true, enumerable: true, configurable: true });
195 sover.__defineSetter__("quux", s5);
196 check(sover, "quux", { get: undefined, set: s5, enumerable: true, configurable: true });
198 /******************************************************************************/
200 // Adding a getter over a non-writable data property
202 function g6() { }
203 var gnover = { eit: 17 };
204 check(gnover, "eit", { value: 17, writable: true, enumerable: true, configurable: true });
205 Object.defineProperty(gnover, "eit", { writable: false });
206 check(gnover, "eit", { value: 17, writable: false, enumerable: true, configurable: true });
208 gnover.__defineGetter__("eit", g6);
209 check(gnover, "eit", { get: g6, set: undefined, enumerable: true, configurable: true });
211 /******************************************************************************/
213 // Adding a setter over a non-writable data property
215 function s6() { }
216 var snover = { eit: 17 };
217 check(snover, "eit", { value: 17, writable: true, enumerable: true, configurable: true });
218 Object.defineProperty(snover, "eit", { writable: false });
219 check(snover, "eit", { value: 17, writable: false, enumerable: true, configurable: true });
221 snover.__defineSetter__("eit", s6);
222 check(snover, "eit", { get: undefined, set: s6, enumerable: true, configurable: true });
224 /******************************************************************************/
226 // Adding a getter over a non-configurable, writable data property
228 function g7() { }
229 var gncover = { moo: 17 };
230 check(gncover, "moo", { value: 17, writable: true, enumerable: true, configurable: true });
231 Object.defineProperty(gncover, "moo", { configurable: false });
232 check(gncover, "moo", { value: 17, writable: true, enumerable: true, configurable: false });
234 expectTypeError(function() { gncover.__defineGetter__("moo", g7); });
235 check(gncover, "moo", { value: 17, writable: true, enumerable: true, configurable: false });
237 /******************************************************************************/
239 // Adding a setter over a non-configurable, writable data property
241 function s7() { }
242 var sncover = { moo: 17 };
243 check(sncover, "moo", { value: 17, writable: true, enumerable: true, configurable: true });
244 Object.defineProperty(sncover, "moo", { configurable: false });
245 check(sncover, "moo", { value: 17, writable: true, enumerable: true, configurable: false });
247 expectTypeError(function() { sncover.__defineSetter__("moo", s7); });
248 check(sncover, "moo", { value: 17, writable: true, enumerable: true, configurable: false });
250 /******************************************************************************/
252 // Adding a getter over a non-configurable, non-writable data property
254 function g8() { }
255 var gncwover = { fwoosh: 17 };
256 check(gncwover, "fwoosh", { value: 17, writable: true, enumerable: true, configurable: true });
257 Object.defineProperty(gncwover, "fwoosh", { writable: false, configurable: false });
258 check(gncwover, "fwoosh", { value: 17, writable: false, enumerable: true, configurable: false });
260 expectTypeError(function() { gncwover.__defineGetter__("fwoosh", g7); });
261 check(gncwover, "fwoosh", { value: 17, writable: false, enumerable: true, configurable: false });
263 /******************************************************************************/
265 // Adding a setter over a non-configurable, non-writable data property
267 function s8() { }
268 var sncwover = { fwoosh: 17 };
269 check(sncwover, "fwoosh", { value: 17, writable: true, enumerable: true, configurable: true });
270 Object.defineProperty(sncwover, "fwoosh", { writable: false, configurable: false });
271 check(sncwover, "fwoosh", { value: 17, writable: false, enumerable: true, configurable: false });
273 expectTypeError(function() { sncwover.__defineSetter__("fwoosh", s7); });
274 check(sncwover, "fwoosh", { value: 17, writable: false, enumerable: true, configurable: false });
276 /******************************************************************************/
278 if (typeof reportCompare === "function")
279 reportCompare(true, true);
281 print("Tests complete");
