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
|
// Copyright (C) 2016 Apple Inc. All rights reserved.
// This code is governed by the BSD license found in the LICENSE file.
/*---
esid: sec-object.prototype.tostring
description: >
Non-string values of `Symbol.toStringTag` property are ignored.
info: |
ProxyCreate ( target, handler )
[...]
7. If IsCallable(target) is true, then
a. Set P.[[Call]] as specified in 9.5.12.
Object.prototype.toString ( )
[...]
7. Else if O has a [[Call]] internal method, let builtinTag be "Function".
[...]
15. Let tag be ? Get(O, @@toStringTag).
16. If Type(tag) is not String, set tag to builtinTag.
17. Return the string-concatenation of "[object ", tag, and "]".
features: [generators, async-functions, Proxy, Symbol.toStringTag]
---*/
var generatorProxy = new Proxy(function* () {}, {});
var generatorProxyProxy = new Proxy(generatorProxy, {});
delete generatorProxy.constructor.prototype[Symbol.toStringTag];
assert.sameValue(
Object.prototype.toString.call(generatorProxy),
'[object Function]',
'generator function proxy without Symbol.toStringTag'
);
assert.sameValue(
Object.prototype.toString.call(generatorProxyProxy),
'[object Function]',
'proxy for generator function proxy without Symbol.toStringTag'
);
var asyncProxy = new Proxy(async function() {}, {});
var asyncProxyProxy = new Proxy(asyncProxy, {});
Object.defineProperty(asyncProxy.constructor.prototype, Symbol.toStringTag, {
value: undefined,
});
assert.sameValue(
Object.prototype.toString.call(asyncProxy),
'[object Function]',
'async function proxy without Symbol.toStringTag'
);
assert.sameValue(
Object.prototype.toString.call(asyncProxyProxy),
'[object Function]',
'proxy for async function proxy without Symbol.toStringTag'
);
reportCompare(0, 0);
|
