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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.difference, 'function');
assertEq(Set.prototype.difference.length, 1);
assertEq(Set.prototype.difference.name, 'difference');
assertSetContainsExactOrderedItems(new Set([1, true, null]).difference(new Set()), [1, true, null]);
assertSetContainsExactOrderedItems(new Set([1, true, null]).difference([1, true, null]), []);
assertSetContainsExactOrderedItems(new Set([1, 2, 3]).difference([2, 3, 4]), [1]);
assertSetContainsExactOrderedItems(new Set([1, 2, 3]).difference([4]), [1, 2, 3]);
// Works when the argument is a custom iterable which follows the Symbol.iterator protocol
assertSetContainsExactOrderedItems(new Set([1, 2, 3]).difference(makeArrayIterator([3, 4])), [1, 2]);
assertSetContainsExactOrderedItems(new Set(['a','d']).difference('abc'), ['d']);
// Works when the `this` is a custom iterable which follows the Symbol.iterator protocol
assertSetContainsExactOrderedItems(Set.prototype.difference.call(makeArrayIterator([1, 2, 3, 3, 2]), [4, 5, 6]), [1, 2, 3]);
// Does not modify the original set object
const set = new Set([1]);
assertEq(set.difference([1]) !== set, true);
// Argument must be iterable
assertThrowsInstanceOf(function () {
const set = new Set();
set.difference();
}, TypeError);
for (const arg of [null, {}, true, 1, undefined, NaN, Symbol()]) {
assertThrowsInstanceOf(function () {
const set = new Set();
set.difference(arg);
}, TypeError);
}
// `this` must be an Object
for (const arg of [null, undefined, Symbol()]) {
assertThrowsInstanceOf(function () {
Set.prototype.difference.call(arg, []);
}, TypeError);
}
// `this` must be iterable
assertThrowsInstanceOf(function () {
Set.prototype.difference.call({}, []);
}, TypeError);
} else {
assertEq(typeof Set.prototype.difference, 'undefined');
}
if (typeof reportCompare === "function")
reportCompare(true, true);
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