HTMLCollection-own-props.html

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This WPT test may be referenced by the following Test IDs:
- /dom/collections/HTMLCollection-own-props.html - WPT Dashboard Interop Dashboard

<!doctype html>

<meta charset=utf-8>

<title>HTMLCollection getters and own properties</title>

<script src=/resources/testharness.js></script>

<script src=/resources/testharnessreport.js></script>

<div id=log></div>

<script>

function append(t, tag, name) {

  var element = document.createElement(tag);

  if (name) {

    element.id = name;

  document.body.appendChild(element);

  t.add_cleanup(function() { element.remove(); });

  return element;

test(function() {

  var name = "named", tag = "a";

  var c = document.getElementsByTagName(tag);

  var element = append(this, tag, name);

  assert_equals(c[name], element);

  c[name] = "foo";

  assert_equals(c[name], element);

}, "Setting non-array index while named property exists (loose)");

test(function() {

  "use strict";

  var name = "named", tag = "b";

  var c = document.getElementsByTagName(tag);

  var element = append(this, tag, name);

  assert_equals(c[name], element);

  assert_throws_js(TypeError, function() {

    c[name] = "foo";

});

  assert_equals(c[name], element);

}, "Setting non-array index while named property exists (strict)");

test(function() {

  var name = "named", tag = "i";

  var c = document.getElementsByTagName(tag);

  assert_equals(c[name], undefined);

  c[name] = "foo";

  assert_equals(c[name], "foo");

  var element = append(this, tag, name);

  assert_equals(c[name], "foo");

  assert_equals(c.namedItem(name), element);

}, "Setting non-array index while named property doesn't exist (loose)");

test(function() {

  "use strict";

  var name = "named", tag = "p";

  var c = document.getElementsByTagName(tag);

  assert_equals(c[name], undefined);

  c[name] = "foo";

  assert_equals(c[name], "foo");

  var element = append(this, tag, name);

  assert_equals(c[name], "foo");

  assert_equals(c.namedItem(name), element);

}, "Setting non-array index while named property doesn't exist (strict)");

test(function() {

  var tag = "q";

  var c = document.getElementsByTagName(tag);

  var element = append(this, tag);

  assert_equals(c[0], element);

  c[0] = "foo";

  assert_equals(c[0], element);

}, "Setting array index while indexed property exists (loose)");

test(function() {

  "use strict";

  var tag = "s";

  var c = document.getElementsByTagName(tag);

  var element = append(this, tag);

  assert_equals(c[0], element);

  assert_throws_js(TypeError, function() {

    c[0] = "foo";

});

  assert_equals(c[0], element);

}, "Setting array index while indexed property exists (strict)");

test(function() {

  var tag = "u";

  var c = document.getElementsByTagName(tag);

  assert_equals(c[0], undefined);

  c[0] = "foo";

  assert_equals(c[0], undefined);

  var element = append(this, tag);

  assert_equals(c[0], element);

}, "Setting array index while indexed property doesn't exist (loose)");

test(function() {

  "use strict";

  var tag = "u";

  var c = document.getElementsByTagName(tag);

  assert_equals(c[0], undefined);

  assert_throws_js(TypeError, function() {

    c[0] = "foo";

});

  assert_equals(c[0], undefined);

  var element = append(this, tag);

  assert_equals(c[0], element);

}, "Setting array index while indexed property doesn't exist (strict)");

</script>