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/*
* Any copyright is dedicated to the Public Domain.
* https://creativecommons.org/publicdomain/zero/1.0/
*/
if (typeof getBuildConfiguration === "undefined") {
var getBuildConfiguration = SpecialPowers.Cu.getJSTestingFunctions().getBuildConfiguration;
}
if (typeof getRealmConfiguration === "undefined") {
var getRealmConfiguration = SpecialPowers.Cu.getJSTestingFunctions().getRealmConfiguration;
}
if (getBuildConfiguration()['new-set-methods'] && getRealmConfiguration().enableNewSetMethods) {
assertEq(typeof Set.prototype.isSubsetOf, 'function');
assertEq(Set.prototype.isSubsetOf.length, 1);
assertEq(Set.prototype.isSubsetOf.name, 'isSubsetOf');
assertEq(new Set([1, true, null]).isSubsetOf(new Set()), false);
assertEq(new Set([1, true, null]).isSubsetOf([1, true, null]), true);
assertEq(new Set([1, 2, 3]).isSubsetOf([2, 3, 4]), false);
assertEq(new Set([1, 2, 3]).isSubsetOf([1, 2, 3, 4]), true);
// Works when the argument is a custom iterable which follows the Symbol.iterator protocol
assertEq(new Set([1, 2, 3]).isSubsetOf(makeArrayIteratorWithHasMethod([3, 4])), false);
// Works when the `this` is a custom iterable which follows the Symbol.iterator protocol
assertEq(
Set.prototype.isSubsetOf.call(
makeArrayIteratorWithHasMethod([1, 2, 3, 3, 2]),
makeArrayIteratorWithHasMethod([4, 5, 6])
),
false
);
// Does not modify the original set object
const set = new Set([1]);
assertEq(set.isSubsetOf(new Set([2])) !== set, true);
// Argument must be iterable and an object
assertThrowsInstanceOf(function () {
const set = new Set();
set.isSubsetOf();
}, TypeError);
for (const arg of [null, {}, true, 1, undefined, NaN, Symbol(), ""]) {
assertThrowsInstanceOf(function () {
const set = new Set();
set.isSubsetOf(arg);
}, TypeError);
}
// `this` must be an Object
for (const arg of [null, undefined, Symbol()]) {
assertThrowsInstanceOf(function () {
Set.prototype.isSubsetOf.call(arg, []);
}, TypeError);
}
// `this` must be iterable
assertThrowsInstanceOf(function () {
Set.prototype.isSubsetOf.call({}, []);
}, TypeError);
} else {
assertEq(typeof Set.prototype.isSubsetOf, 'undefined');
}
if (typeof reportCompare === "function")
reportCompare(true, true);
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