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
|
function testNumBoundArgsGuard() {
function f(a, b, c, d, e, f, g, h) {
return [a, b, c, d, e, f, g, h].join(",");
}
var arr = [
f.bind(null, 1, 2, 3, 4, 5, 6),
f.bind(null, 4, 5, 6, 7, 8, 9),
f.bind(null, 1, 2),
f.bind(null, 1),
];
var expected = [
"1,2,3,4,5,6,10,11",
"4,5,6,7,8,9,10,11",
"1,2,10,11,12,13,14,15",
"1,10,11,12,13,14,15,",
];
for (var i = 0; i < 100; i++) {
assertEq(arr[0](10, 11, 12, 13, 14, 15), expected[0]);
assertEq(arr[1](10, 11, 12, 13, 14, 15), expected[1]);
assertEq(arr[2](10, 11, 12, 13, 14, 15), expected[2]);
assertEq(arr[3](10, 11, 12, 13, 14, 15), expected[3]);
assertEq(arr[i % arr.length](10, 11, 12, 13, 14, 15), expected[i % arr.length]);
}
}
testNumBoundArgsGuard();
function testJSFunctionGuard() {
var arr = [
(x => x * 0).bind(null, 1),
(x => x * 1).bind(null, 2),
(x => x * 2).bind(null, 3),
(x => x * 3).bind(null, 4),
(x => x * 4).bind(null, 5),
(x => x * 5).bind(null, 6),
(x => x * 6).bind(null, 7),
(x => x * 7).bind(null, 8),
(x => x * 8).bind(null, 9),
];
var boundNative = Math.abs.bind(null, -123);
var boundProxy = (new Proxy(x => x * 42, {})).bind(null, 7);
for (var i = 0; i < 100; i++) {
var idx = i % arr.length;
var fun1 = arr[idx];
var expected1 = idx * (idx + 1);
assertEq(fun1(), expected1);
var fun2 = i > 70 ? boundNative : fun1;
assertEq(fun2(), i > 70 ? 123 : expected1);
var fun3 = i > 70 ? boundProxy : fun1;
assertEq(fun3(), i > 70 ? 294 : expected1);
}
}
testJSFunctionGuard();
function testCrossRealmTarget() {
globalThis.num = "FAIL";
var globals = [];
for (var i = 0; i < 4; i++) {
var g = newGlobal({sameCompartmentAs: this});
g.num = i;
globals.push(g);
}
var arr = globals.map(g => g.evaluate("(x => this.num)"));
arr = arr.map(f => Function.prototype.bind.call(f, null));
for (var i = 0; i < 200; i++) {
assertEq(arr[0](), 0);
var idx = i % arr.length;
assertEq(arr[idx](), idx);
}
}
testCrossRealmTarget();
// Bug 1819651.
function testReturnsItself() {
var fun = function() { return boundFun; };
var boundFun = fun.bind(null);
for (var i = 0; i < 20; i++) {
assertEq(boundFun(), boundFun);
assertEq(new boundFun(), boundFun);
}
}
testReturnsItself();
|
