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<!doctype html>
<meta charset=utf-8>
<title>DOMTokenList iteration: keys, values, etc.</title>
<script src=/resources/testharness.js></script>
<script src=/resources/testharnessreport.js></script>
<span class=" a a b "></span>
<script>
test(() => {
var list = document.querySelector("span").classList;
assert_array_equals([...list], ["a", "b"]);
}, "classList");
test(() => {
var keys = document.querySelector("span").classList.keys();
assert_false(keys instanceof Array, "must not be Array");
keys = [...keys];
assert_array_equals(keys, [0, 1]);
}, "classList.keys");
test(() => {
var values = document.querySelector("span").classList.values();
assert_false(values instanceof Array, "must not be Array");
values = [...values];
assert_array_equals(values, ["a", "b"]);
}, "classList.values");
test(() => {
var entries = document.querySelector("span").classList.entries();
assert_false(entries instanceof Array, "must not be Array");
entries = [...entries];
var keys = [...document.querySelector("span").classList.keys()];
var values = [...document.querySelector("span").classList.values()];
assert_equals(entries.length, keys.length, "entries.length == keys.length");
assert_equals(entries.length, values.length,
"entries.length == values.length");
for (var i = 0; i < entries.length; ++i) {
assert_array_equals(entries[i], [keys[i], values[i]],
"entries[" + i + "]");
}
}, "classList.entries");
test(() => {
var list = document.querySelector("span").classList;
var values = [...list.values()];
var keys = [...list.keys()];
var entries = [...list.entries()];
var cur = 0;
var thisObj = {};
list.forEach(function(value, key, listObj) {
assert_equals(listObj, list, "Entry " + cur + " listObj");
assert_equals(this, thisObj, "Entry " + cur + " this");
assert_equals(value, values[cur], "Entry " + cur + " value");
assert_equals(key, keys[cur], "Entry " + cur + " key");
cur++;
}, thisObj);
assert_equals(cur, entries.length, "length");
}, "classList.forEach");
test(() => {
var list = document.querySelector("span").classList;
assert_equals(list[Symbol.iterator], Array.prototype[Symbol.iterator],
"[Symbol.iterator]");
assert_equals(list.keys, Array.prototype.keys, ".keys");
if (Array.prototype.values) {
assert_equals(list.values, Array.prototype.values, ".values");
}
assert_equals(list.entries, Array.prototype.entries, ".entries");
assert_equals(list.forEach, Array.prototype.forEach, ".forEach");
}, "classList inheritance from Array.prototype");
</script>
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