forked from web-platform-tests/wpt
-
Notifications
You must be signed in to change notification settings - Fork 0
/
window-named-properties-object.html
284 lines (226 loc) · 10.6 KB
/
window-named-properties-object.html
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
<!doctype html>
<meta charset="utf-8">
<title>Internal methods of Window's named properties object</title>
<link rel="help" href="https://heycam.github.io/webidl/#named-properties-object">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<body>
<script>
function sloppyModeSet(base, key, value) { base[key] = value; }
</script>
<script>
"use strict";
const supportedNonIndex = "supported non-index property name";
const supportedIndex = "supported indexed property name";
const unsupportedNonIndex = "unsupported non-index property name";
const unsupportedIndex = "unsupported indexed property name";
const existingSymbol = "existing symbol property name";
const nonExistingSymbol = "non-existing symbol property name";
test(t => {
const { w, wp } = createWindowProperties(t);
Object.setPrototypeOf(wp, w.EventTarget.prototype); // Setting current [[Prototype]] value shouldn't throw
assert_throws_js(TypeError, () => { Object.setPrototypeOf(wp, {}); });
assert_throws_js(w.TypeError, () => { wp.__proto__ = null; });
assert_false(Reflect.setPrototypeOf(wp, w.Object.prototype));
assert_equals(Object.getPrototypeOf(wp), w.EventTarget.prototype);
}, "[[SetPrototypeOf]] and [[GetPrototypeOf]]");
test(t => {
const { wp } = createWindowProperties(t);
assert_throws_js(TypeError, () => { Object.preventExtensions(wp); });
assert_false(Reflect.preventExtensions(wp));
assert_true(Object.isExtensible(wp));
}, "[[PreventExtensions]] and [[IsExtensible]]");
test(t => {
const { w, wp } = createWindowProperties(t);
const elA = appendElementWithId(w, "a");
const el0 = appendIframeWithName(w, 0);
assert_prop_desc(Object.getOwnPropertyDescriptor(wp, "a"), elA, supportedNonIndex);
assert_prop_desc(Reflect.getOwnPropertyDescriptor(wp, 0), el0, supportedIndex);
assert_equals(Reflect.getOwnPropertyDescriptor(wp, "b"), undefined, unsupportedNonIndex);
assert_equals(Object.getOwnPropertyDescriptor(wp, 1), undefined, unsupportedIndex);
}, "[[GetOwnProperty]]");
test(t => {
const { w, wp } = createWindowProperties(t);
appendIframeWithName(w, "hasOwnProperty");
appendFormWithName(w, "addEventListener");
appendElementWithId(w, "a");
appendIframeWithName(w, 0);
w.Object.prototype.a = {};
w.EventTarget.prototype[0] = {};
// These are shadowed by properties higher in [[Prototype]] chain. See https://heycam.github.io/webidl/#dfn-named-property-visibility
assert_equals(Object.getOwnPropertyDescriptor(wp, "hasOwnProperty"), undefined, supportedNonIndex);
assert_equals(Reflect.getOwnPropertyDescriptor(wp, "addEventListener"), undefined, supportedNonIndex);
assert_equals(Object.getOwnPropertyDescriptor(wp, "a"), undefined, supportedNonIndex);
assert_equals(Reflect.getOwnPropertyDescriptor(wp, 0), undefined, supportedIndex);
}, "[[GetOwnProperty]] (named property visibility algorithm)");
test(t => {
const { w, wp } = createWindowProperties(t);
appendElementWithId(w, "a");
appendFormWithName(w, 0);
assert_define_own_property_fails(wp, "a", {}, supportedNonIndex);
assert_define_own_property_fails(wp, 0, {}, supportedIndex);
assert_define_own_property_fails(wp, "b", {}, unsupportedNonIndex);
assert_define_own_property_fails(wp, 1, {}, unsupportedIndex);
assert_define_own_property_fails(wp, Symbol.toStringTag, {}, existingSymbol);
assert_define_own_property_fails(wp, Symbol(), {}, nonExistingSymbol);
}, "[[DefineOwnProperty]]");
test(t => {
const { w, wp } = createWindowProperties(t);
appendFormWithName(w, "a");
appendElementWithId(w, 0);
assert_true("a" in wp, supportedNonIndex);
assert_true(Reflect.has(wp, "a"), supportedNonIndex);
assert_true(0 in wp, supportedIndex);
assert_true(Reflect.has(wp, 0), supportedIndex);
assert_false("b" in wp, unsupportedNonIndex);
assert_false(Reflect.has(wp, 1), unsupportedIndex);
}, "[[HasProperty]]");
test(t => {
const { w, wp } = createWindowProperties(t);
const elA = appendFormWithName(w, "a");
const el0 = appendIframeWithName(w, 0);
assert_equals(wp.a, elA, supportedNonIndex);
assert_equals(wp[0], el0, supportedIndex);
assert_equals(wp[Symbol.toStringTag], "WindowProperties", existingSymbol);
assert_equals(wp.b, undefined, unsupportedNonIndex);
assert_equals(wp[1], undefined, unsupportedIndex);
assert_equals(wp[Symbol.iterator], undefined, nonExistingSymbol);
}, "[[Get]]");
test(t => {
const { w, wp } = createWindowProperties(t);
appendIframeWithName(w, "isPrototypeOf");
appendFormWithName(w, "dispatchEvent");
appendElementWithId(w, "a");
appendElementWithId(w, 0);
w.EventTarget.prototype.a = 10;
w.Object.prototype[0] = 20;
// These are shadowed by properties higher in [[Prototype]] chain. See https://heycam.github.io/webidl/#dfn-named-property-visibility
assert_equals(wp.isPrototypeOf, w.Object.prototype.isPrototypeOf, supportedNonIndex);
assert_equals(wp.dispatchEvent, w.EventTarget.prototype.dispatchEvent, supportedNonIndex);
assert_equals(wp.a, 10, supportedNonIndex);
assert_equals(wp[0], 20, supportedIndex);
}, "[[Get]] (named property visibility algorithm)");
test(t => {
const { w, wp } = createWindowProperties(t);
const elA = appendIframeWithName(w, "a");
const el0 = appendFormWithName(w, 0);
assert_set_fails(wp, "a", supportedNonIndex);
assert_set_fails(wp, "b", unsupportedNonIndex);
assert_set_fails(wp, 0, supportedIndex);
assert_set_fails(wp, 1, unsupportedIndex);
assert_set_fails(wp, Symbol.toStringTag, existingSymbol);
assert_set_fails(wp, Symbol(), nonExistingSymbol);
assert_equals(wp.a, elA, supportedNonIndex);
assert_equals(wp[0], el0, supportedIndex);
assert_equals(wp.b, undefined, unsupportedNonIndex);
assert_equals(wp[1], undefined, unsupportedIndex);
}, "[[Set]] (direct)");
test(t => {
const { w, wp } = createWindowProperties(t);
const receiver = Object.create(wp);
appendIframeWithName(w, "a");
appendElementWithId(w, 0);
let setterThisValue;
Object.defineProperty(w.Object.prototype, 1, { set() { setterThisValue = this; } });
Object.defineProperty(w.EventTarget.prototype, "b", { writable: false });
receiver.a = 10;
assert_throws_js(TypeError, () => { receiver.b = {}; }, unsupportedNonIndex);
receiver[0] = 20;
receiver[1] = {};
assert_equals(receiver.a, 10, supportedNonIndex);
assert_equals(receiver[0], 20, supportedIndex);
assert_false(receiver.hasOwnProperty("b"), unsupportedNonIndex);
assert_false(receiver.hasOwnProperty(1), unsupportedIndex);
assert_equals(setterThisValue, receiver, "setter |this| value is receiver");
}, "[[Set]] (prototype chain)");
test(t => {
const { w, wp } = createWindowProperties(t);
const receiver = {};
appendFormWithName(w, "a");
appendIframeWithName(w, 0);
let setterThisValue;
Object.defineProperty(w.Object.prototype, "b", { set() { setterThisValue = this; } });
Object.defineProperty(w.EventTarget.prototype, 1, { writable: false });
assert_true(Reflect.set(wp, "a", 10, receiver), supportedNonIndex);
assert_true(Reflect.set(wp, 0, 20, receiver), supportedIndex);
assert_true(Reflect.set(wp, "b", {}, receiver), unsupportedNonIndex);
assert_false(Reflect.set(wp, 1, {}, receiver), unsupportedIndex);
assert_equals(receiver.a, 10, supportedNonIndex);
assert_equals(receiver[0], 20, supportedIndex);
assert_false(receiver.hasOwnProperty("b"), unsupportedNonIndex);
assert_equals(setterThisValue, receiver, "setter |this| value is receiver");
assert_false(receiver.hasOwnProperty(1), unsupportedIndex);
}, "[[Set]] (Reflect.set)");
test(t => {
const { w, wp } = createWindowProperties(t);
const elA = appendFormWithName(w, "a");
const el0 = appendElementWithId(w, 0);
assert_delete_fails(wp, "a", supportedNonIndex);
assert_delete_fails(wp, 0, supportedIndex);
assert_delete_fails(wp, "b", unsupportedNonIndex);
assert_delete_fails(wp, 1, unsupportedIndex);
assert_delete_fails(wp, Symbol.toStringTag, existingSymbol);
assert_delete_fails(wp, Symbol("foo"), nonExistingSymbol);
assert_equals(wp.a, elA, supportedNonIndex);
assert_equals(wp[0], el0, supportedIndex);
assert_equals(wp[Symbol.toStringTag], "WindowProperties", existingSymbol);
}, "[[Delete]]");
test(t => {
const { w, wp } = createWindowProperties(t);
appendIframeWithName(w, "a");
appendElementWithId(w, 0);
appendFormWithName(w, "b");
const forInKeys = [];
for (const key in wp)
forInKeys.push(key);
assert_array_equals(forInKeys, Object.keys(w.EventTarget.prototype));
assert_array_equals(Object.getOwnPropertyNames(wp), []);
assert_array_equals(Reflect.ownKeys(wp), [Symbol.toStringTag]);
}, "[[OwnPropertyKeys]]");
function createWindowProperties(t) {
const iframe = document.createElement("iframe");
document.body.append(iframe);
t.add_cleanup(() => { iframe.remove(); });
const w = iframe.contentWindow;
const wp = Object.getPrototypeOf(w.Window.prototype);
return { w, wp };
}
function appendIframeWithName(w, name) {
const el = w.document.createElement("iframe");
el.name = name;
w.document.body.append(el);
return el.contentWindow;
}
function appendFormWithName(w, name) {
const el = w.document.createElement("form");
el.name = name;
w.document.body.append(el);
return el;
}
function appendElementWithId(w, id) {
const el = w.document.createElement("div");
el.id = id;
w.document.body.append(el);
return el;
}
function assert_prop_desc(desc, value, testInfo) {
assert_equals(typeof desc, "object", `${testInfo} typeof desc`);
assert_equals(desc.value, value, `${testInfo} [[Value]]`);
assert_true(desc.writable, `${testInfo} [[Writable]]`);
assert_false(desc.enumerable, `${testInfo} [[Enumerable]]`);
assert_true(desc.configurable, `${testInfo} [[Configurable]]`);
}
function assert_define_own_property_fails(object, key, desc, testInfo) {
assert_throws_js(TypeError, () => { Object.defineProperty(object, key, desc); }, testInfo);
assert_false(Reflect.defineProperty(object, key, desc), testInfo);
}
function assert_set_fails(object, key, value, testInfo) {
sloppyModeSet(object, key, value);
assert_throws_js(TypeError, () => { object[key] = value; }, testInfo);
assert_false(Reflect.set(object, key, value), testInfo);
}
function assert_delete_fails(object, key, testInfo) {
assert_throws_js(TypeError, () => { delete object[key]; }, testInfo);
assert_false(Reflect.deleteProperty(object, key), testInfo);
}
</script>