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<!DOCTYPE html>
<meta charset="utf-8">
<title>Legacy platform objects [[OwnPropertyKeys]] method</title>
<link rel="help" href="https://webidl.spec.whatwg.org/#legacy-platform-object-ownpropertykeys">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script>
function custom_assert_array_equals(actual, expected, msg) {
function replacer(k, v) {
if (typeof v === "symbol") {
return v.toString();
}
return v;
}
assert_array_equals(actual, expected, " actual " + JSON.stringify(actual, replacer) + " expected " + JSON.stringify(expected, replacer));
}
test(function() {
var element = document.createElement("div");
element.appendChild(document.createElement("div"));
element.appendChild(document.createElement("div"));
element.appendChild(document.createElement("div"));
custom_assert_array_equals(Reflect.ownKeys(element.childNodes), ["0", "1", "2"]);
}, "must enumerate property indices in ascending numerical order");
test(function() {
var element = document.createElement("div");
element.setAttribute("data-foo", "foo content");
element.setAttribute("data-bar", "bar content");
element.setAttribute("data-baz", "baz content");
custom_assert_array_equals(Reflect.ownKeys(element.dataset), ["foo", "bar", "baz"]);
}, "must enumerate property names in list order");
test(function() {
var element = document.createElement("div");
element.setAttribute("id", "foo");
element.setAttribute("class", "bar");
custom_assert_array_equals(Reflect.ownKeys(element.attributes), ["0", "1", "id", "class"]);
}, "must first enumerate property indices in ascending numerical order, then named properties in list order");
test(function() {
var element = document.createElement("div");
element.attributes.foo = "some value";
element.attributes.bar = "and another";
element.setAttribute("id", "foo");
element.setAttribute("class", "bar");
custom_assert_array_equals(Reflect.ownKeys(element.attributes), ["0", "1", "id", "class", "foo", "bar"]);
}, "must enumerate own properties after indexed and named properties even when they're added first");
test(function() {
var symb1 = Symbol();
var symb2 = Symbol();
var element = document.createElement("div");
element.attributes.foo = "some value";
element.attributes[symb1] = "symb1";
element.attributes[symb2] = "symb2";
element.attributes.bar = "and another";
element.setAttribute("id", "foo");
element.setAttribute("class", "bar");
custom_assert_array_equals(Reflect.ownKeys(element.attributes),
["0", "1", "id", "class", "foo", "bar", symb1, symb2]);
}, "must enumerate symbols after strings, regardless of which ones got added first");
</script>
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