mozilla-central/testing/web-platform/tests/html/infrastructure/common-dom-interfaces/collections/htmlformcontrolscollection.html

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<!DOCTYPE html>
<meta charset="utf-8">
<title>HTML Test: the HTMLFormControlsCollection interface</title>
<link rel="author" title="Intel" href="http://www.intel.com/">
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<div id="log"></div>
<form id="f1">
<input type="radio" id="r1" name="ra">
<keygen id="kg" name="key"></keygen> <!-- we test that it does *not* appear in form.elements -->
</form>
<form id="f2">
<table>
<tr>
<td>
<input type="checkbox" id="cb">
<input type="checkbox" name="cb">
</td>
</tr>
<tr>
<td>
<button id="btn"></button>
<button name="btn"></button>
</td>
</tr>
</table>
</form>
<script>
var coll1, coll2, rdo;
setup(function () {
rdo = document.getElementById("r1");
coll1 = document.forms[0].elements;
coll2 = document.forms[1].elements;
});
//length
test(function () {
assert_equals(coll1.length, 1, "The length attribute is incorrect.");
assert_equals(coll2.length, 4, "The length attribute is incorrect.");
}, "The length attribute must return the number of elements in the form");
//getter - index
test(function () {
assert_equals(coll1.item(0), rdo, "HTMLFormControlsCollection.item(index) should return the 'input' element in radio status.");
}, "HTMLFormControlsCollection.item(index) must return the indexed item");
test(function () {
assert_equals(coll1[0], rdo, "HTMLFormControlsCollection[index] should return the 'input' element in radio status.");
}, "HTMLFormControlsCollection[index] must return the indexed item");
//getter - name
test(function () {
assert_throws_js(TypeError, function() { coll1("r1") });
}, "HTMLFormControlsCollection is not callable");
test(function () {
assert_equals(coll1["r1"], rdo, "HTMLFormControlsCollection[name] should return the 'input' element in radio status.");
}, "HTMLFormControlsCollection[name] must return the named item");
//getter - namedItem
test(function () {
assert_equals(coll1.namedItem("r1"), rdo, "HTMLFormControlsCollection.namedItem(name) should return the 'input' element in radio status.");
}, "HTMLFormControlsCollection.namedItem(name) must return the named item");
test(function () {
assert_true(coll1.namedItem("r1") instanceof Element, "Can not return 'Element' object.");
}, "The namedItem(name) must return an Element");
test(function () {
assert_true(coll2.namedItem("cb") instanceof RadioNodeList, "Can not return 'RadioNodeList' object.");
}, "The namedItem(name) must return RadioNodeList");
test(function () {
assert_equals(coll1.namedItem(""), null, "The return value of namedItem() should be null.");
}, "The namedItem(name) must return null if the name is empty");
test(function () {
assert_equals(coll1.namedItem("test"), null, "The return value of namedItem() should be null.");
}, "The namedItem(name) must return null if there is no matched element");
test(function () {
assert_equals(coll1.namedItem("r1"), document.getElementById("r1"), "Controls can be named by 'id' attribute.");
assert_equals(coll1.namedItem("ra"), document.getElementById("r1"), "Controls can be named by 'name' attribute.");
}, "Controls can be indexed by id or name attribute");
test(function () {
assert_equals(coll1.namedItem("kg"), null, "Keygen does not show up when queried by id.");
assert_equals(coll1.namedItem("key"), null, "Keygen does not show up when queried by name.");
}, "Keygen controls do not show up at all");
test(function () {
assert_equals(coll2.namedItem("btn").length, 2, "The length attribute should be 2.");
}, "The namedItem(name) must return the items with id or name attribute");
//various controls in fieldset and form
var containers = ["form", "fieldset"],
controls = ["button", "fieldset", "input", "object", "output", "select", "textarea"];
for (var m = 0; m < containers.length; m++) {
test(function () {
var container = document.createElement(containers[m]);
var len = controls.length;
for (var n = 0; n < len; n++)
container.appendChild(document.createElement(controls[n]));
document.body.appendChild(container);
assert_equals(container.elements.length, len, "The length should be " + len + ".");
}, "The HTMLFormControlsCollection interface is used for collections of listed elements in " + containers[m] + " element");
}
//Check the controls' order
test(function () {
var opt = document.forms[1].insertBefore(document.createElement("output"), document.forms[1].firstChild);
assert_array_equals(document.forms[1].elements,
[opt, document.getElementsByTagName("input")[1], document.getElementsByTagName("input")[2],
document.getElementsByTagName("button")[0], document.getElementsByTagName("button")[1]]);
}, "The controls in the form element must be sorted in tree order");
</script>