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
|
/* This Source Code Form is subject to the terms of the Mozilla Public
* License, v. 2.0. If a copy of the MPL was not distributed with this
* file, You can obtain one at http://mozilla.org/MPL/2.0/. */
// Simple functional test for destructuring rest parameters.
function arrayRest(...[a, b]) {
return a + b;
}
assertEq(arrayRest(3, 7), 10);
function arrayRestWithDefault(...[a, b = 1]) {
return a + b;
}
assertEq(arrayRestWithDefault(3, 7), 10);
assertEq(arrayRestWithDefault(4), 5);
assertEq(arrayRestWithDefault(4, undefined), 5);
function objectRest(...{length: len}) {
return len;
}
assertEq(objectRest(), 0);
assertEq(objectRest(10), 1);
assertEq(objectRest(10, 20), 2);
function objectRestWithDefault(...{0: a, 1: b = 1}) {
return a + b;
}
assertEq(objectRestWithDefault(3, 7), 10);
assertEq(objectRestWithDefault(4), 5);
assertEq(objectRestWithDefault(4, undefined), 5);
function arrayRestWithNestedRest(...[...r]) {
return r.length;
}
assertEq(arrayRestWithNestedRest(), 0);
assertEq(arrayRestWithNestedRest(10), 1);
assertEq(arrayRestWithNestedRest(10, 20), 2);
function arrayRestTDZ(...[a = a]) { }
assertThrowsInstanceOf(() => arrayRestTDZ(), ReferenceError);
function objectRestTDZ(...{a = a}) { }
assertThrowsInstanceOf(() => objectRestTDZ(), ReferenceError);
if (typeof reportCompare === "function")
reportCompare(0, 0);
|
