gecko-dev/testing/web-platform/tests/dom/nodes/MutationObserver-attributes.html

<!DOCTYPE HTML>
<meta charset=utf-8>
<title>MutationObservers: attributes mutations</title>
<script src="/resources/testharness.js"></script>
<script src="/resources/testharnessreport.js"></script>
<script src="mutationobservers.js"></script>
<h1>MutationObservers: attributes mutations</h1>
<div id="log"></div>

<section style="display: none">
<p id='n'></p>

<p id='n00'></p>
<p id='n01'></p>
<p id='n02'></p>
<p id='n03'></p>
<input id="n04" type="text">

<p id='n10'></p>
<p id='n11'></p>
<p id='n12' class='c01'></p>
<p id='n13' class='c01 c02'></p>

<p id='n20'></p>
<p id='n21'></p>
<p id='n22'></p>
<p id='n23'></p>
<p id='n24' class="c01 c02"></p>

<p id='n30' class="c01 c02"></p>
<p id='n31' class="c01 c02"></p>
<p id='n32' class="c01 c02"></p>

<p id='n40' class="c01 c02"></p>
<p id='n41' class="c01 c02"></p>
<p id='n42' class="c01 c02"></p>
<p id='n43' class="c01 c02"></p>
<p id='n44' class="c01 c02"></p>
<p id='n45' class="c01 c02"></p>

<p id='n50' class="c01 c02"></p>
<p id='n51'></p>

<p id='n60'></p>
<p id='n61' class="c01"></p>
<p id='n62'></p>

<p id='n70' class="c01"></p>
<p id='n71'></p>
<input id="n72" type="text">

<p id='n80'></p>
<p id='n81'></p>

<p id='n90'></p>
<p id='n91'></p>
<p id='n92'></p>

<p id='n1000'></p>
<p id='n1001' class='c01'></p>

<p id='n2000'></p>
<p id='n2001' class='c01'></p>

<p id='n3000'></p>

</section>

<script>

var n = document.getElementById('n');

runMutationTest(n,
                  {"attributes":true},
                  [{type: "attributes", attributeName: "id"}],
                  function() { n.id = "n000";},
                  "attributes Element.id: update, no oldValue, mutation");

var n00 = document.getElementById('n00');
runMutationTest(n00,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n00", attributeName: "id"}],
                  function() { n00.id = "n000";},
                  "attributes Element.id: update mutation");

var n01 = document.getElementById('n01');
runMutationTest(n01,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n01", attributeName: "id"}],
                  function() { n01.id = "";},
                  "attributes Element.id: empty string update mutation");

var n02 = document.getElementById('n02');
runMutationTest(n02,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n02", attributeName: "id"}, {type: "attributes", attributeName: "class"}],
                  function() { n02.id = "n02"; n02.setAttribute("class", "c01");},
                  "attributes Element.id: same value mutation");

var n03 = document.getElementById('n03');
runMutationTest(n03,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n03", attributeName: "id"}],
                  function() { n03.unknown = "c02"; n03.id = "n030";},
                  "attributes Element.unknown: IDL attribute no mutation");

var n04 = document.getElementById('n04');
runMutationTest(n04,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "text", attributeName: "type"}, {type: "attributes", oldValue: "n04", attributeName: "id"}],
                  function() { n04.type = "unknown"; n04.id = "n040";},
                  "attributes HTMLInputElement.type: type update mutation");

  var n10 = document.getElementById('n10');
runMutationTest(n10,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", attributeName: "class"}],
                  function() { n10.className = "c01";},
                  "attributes Element.className: new value mutation");

  var n11 = document.getElementById('n11');
runMutationTest(n11,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", attributeName: "class"}],
                  function() { n11.className = "";},
                  "attributes Element.className: empty string update mutation");

  var n12 = document.getElementById('n12');
runMutationTest(n12,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01", attributeName: "class"}],
                  function() { n12.className = "c01";},
                  "attributes Element.className: same value mutation");

  var n13 = document.getElementById('n13');
runMutationTest(n13,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
                  function() { n13.className = "c01 c02";},
                  "attributes Element.className: same multiple values mutation");

  var n20 = document.getElementById('n20');
runMutationTest(n20,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", attributeName: "class"}],
                  function() { n20.classList.add("c01");},
                  "attributes Element.classList.add: single token addition mutation");

  var n21 = document.getElementById('n21');
runMutationTest(n21,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", attributeName: "class"}],
                  function() { n21.classList.add("c01", "c02", "c03");},
                  "attributes Element.classList.add: multiple tokens addition mutation");

  var n22 = document.getElementById('n22');
runMutationTest(n22,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n22", attributeName: "id"}],
                  function() { try { n22.classList.add("c01", "", "c03"); } catch (e) { };
                               n22.id = "n220"; },
                  "attributes Element.classList.add: syntax err/no mutation");

  var n23 = document.getElementById('n23');
runMutationTest(n23,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n23", attributeName: "id"}],
                  function() { try { n23.classList.add("c01", "c 02", "c03"); } catch (e) { };
                               n23.id = "n230"; },
                  "attributes Element.classList.add: invalid character/no mutation");

  var n24 = document.getElementById('n24');
runMutationTest(n24,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}, {type: "attributes", oldValue: "n24", attributeName: "id"}],
                  function() { n24.classList.add("c02"); n24.id = "n240";},
                  "attributes Element.classList.add: same value mutation");

  var n30 = document.getElementById('n30');
runMutationTest(n30,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
                  function() { n30.classList.remove("c01");},
                  "attributes Element.classList.remove: single token removal mutation");

  var n31 = document.getElementById('n31');
runMutationTest(n31,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
                  function() { n31.classList.remove("c01", "c02");},
                  "attributes Element.classList.remove: multiple tokens removal mutation");

  var n32 = document.getElementById('n32');
runMutationTest(n32,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}, {type: "attributes", oldValue: "n32", attributeName: "id"}],
                  function() { n32.classList.remove("c03"); n32.id = "n320";},
                  "attributes Element.classList.remove: missing token removal mutation");

  var n40 = document.getElementById('n40');
runMutationTest(n40,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
                  function() { n40.classList.toggle("c01");},
                  "attributes Element.classList.toggle: token removal mutation");

  var n41 = document.getElementById('n41');
runMutationTest(n41,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
                  function() { n41.classList.toggle("c03");},
                  "attributes Element.classList.toggle: token addition mutation");

  var n42 = document.getElementById('n42');
runMutationTest(n42,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
                  function() { n42.classList.toggle("c01", false);},
                  "attributes Element.classList.toggle: forced token removal mutation");

  var n43 = document.getElementById('n43');
runMutationTest(n43,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n43", attributeName: "id"}],
                  function() { n43.classList.toggle("c03", false); n43.id = "n430"; },
                  "attributes Element.classList.toggle: forced missing token removal no mutation");

  var n44 = document.getElementById('n44');
runMutationTest(n44,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n44", attributeName: "id"}],
                  function() { n44.classList.toggle("c01", true); n44.id = "n440"; },
                  "attributes Element.classList.toggle: forced existing token addition no mutation");

  var n45 = document.getElementById('n45');
runMutationTest(n45,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
                  function() { n45.classList.toggle("c03", true);},
                  "attributes Element.classList.toggle: forced token addition mutation");

  var n50 = document.getElementById('n50');
runMutationTest(n50,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01 c02", attributeName: "class"}],
                  function() {
                    for (var i = 0; i < n50.attributes.length; i++) {
                      var attr = n50.attributes[i];
                      if (attr.localName === "class") {
                        attr.value = "c03";
                      }
                    };
                  },
                  "attributes Element.attributes.value: update mutation");

  var n51 = document.getElementById('n51');
runMutationTest(n51,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n51", attributeName: "id"}],
                  function() {
                    n51.attributes[0].value = "n51";
                  },
                  "attributes Element.attributes.value: same id mutation");

  var n60 = document.getElementById('n60');
runMutationTest(n60,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n60", attributeName: "id"}],
                  function() {
                    n60.setAttribute("id", "n601");
                  },
                  "attributes Element.setAttribute: id mutation");

  var n61 = document.getElementById('n61');
runMutationTest(n61,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01", attributeName: "class"}],
                  function() {
                    n61.setAttribute("class", "c01");
                  },
                  "attributes Element.setAttribute: same class mutation");

  var n62 = document.getElementById('n62');
runMutationTest(n62,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", attributeName: "classname"}],
                  function() {
                    n62.setAttribute("classname", "c01");
                  },
                  "attributes Element.setAttribute: classname mutation");

  var n70 = document.getElementById('n70');
runMutationTest(n70,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "c01", attributeName: "class"}],
                  function() {
                    n70.removeAttribute("class");
                  },
                  "attributes Element.removeAttribute: removal mutation");

  var n71 = document.getElementById('n71');
runMutationTest(n71,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n71", attributeName: "id"}],
                  function() {
                    n71.removeAttribute("class");
                    n71.id = "n710";
                  },
                  "attributes Element.removeAttribute: removal no mutation");

  var n72 = document.getElementById('n72');
runMutationTest(n72,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "text", attributeName: "type"}, {type: "attributes", oldValue: "n72", attributeName: "id"}],
                  function() {
                    n72.removeAttribute("type");
                    n72.id = "n720";
                  },
                  "childList HTMLInputElement.removeAttribute: type removal mutation");

  var n80 = document.getElementById('n80');
runMutationTest(n80,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", attributeName: "private", attributeNamespace: "http://example.org/"}],
                  function() {
                    n80.setAttributeNS("http://example.org/", "private", "42");
                  },
                  "attributes Element.setAttributeNS: creation mutation");

  var n81 = document.getElementById('n81');
runMutationTest(n81,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", attributeName: "lang", attributeNamespace: "http://www.w3.org/XML/1998/namespace"}],
                  function() {
                    n81.setAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang", "42");
                  },
                  "attributes Element.setAttributeNS: prefixed attribute creation mutation");

  var n90 = document.getElementById('n90');
  n90.setAttributeNS("http://example.org/", "private", "42");
runMutationTest(n90,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "42", attributeName: "private", attributeNamespace: "http://example.org/"}],
                  function() {
                    n90.removeAttributeNS("http://example.org/", "private");
                  },
                  "attributes Element.removeAttributeNS: removal mutation");

  var n91 = document.getElementById('n91');
runMutationTest(n91,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n91", attributeName: "id"}],
                  function() {
                    n91.removeAttributeNS("http://example.org/", "private");
                    n91.id = "n910";
                  },
                  "attributes Element.removeAttributeNS: removal no mutation");

  var n92 = document.getElementById('n92');
runMutationTest(n92,
                  {"attributes":true, "attributeOldValue": true},
                  [{type: "attributes", oldValue: "n92", attributeName: "id"}],
                  function() {
                    n92.removeAttributeNS("http://www.w3.org/XML/1998/namespace", "xml:lang");
                    n92.id = "n920";
                  },
                  "attributes Element.removeAttributeNS: prefixed attribute removal no mutation");

  var n1000 = document.getElementById('n1000');
runMutationTest(n1000,
                  {"attributes":true, "attributeOldValue": true,"attributeFilter": ["id"]},
                  [{type: "attributes", oldValue: "n1000", attributeName: "id"}],
                  function() { n1000.id = "abc"; n1000.className = "c01"},
                  "attributes/attributeFilter Element.id/Element.className: update mutation");

  var n1001 = document.getElementById('n1001');
runMutationTest(n1001,
                  {"attributes":true, "attributeOldValue": true,"attributeFilter": ["id", "class"]},
                  [{type: "attributes", oldValue: "n1001", attributeName: "id"},
                   {type: "attributes", oldValue: "c01", attributeName: "class"}],
                  function() { n1001.id = "abc"; n1001.className = "c02"; n1001.setAttribute("lang", "fr");},
                  "attributes/attributeFilter Element.id/Element.className: multiple filter update mutation");

  var n2000 = document.getElementById('n2000');
runMutationTest(n2000,
                  {"attributeOldValue": true},
                  [{type: "attributes", oldValue: "n2000", attributeName: "id"}],
                  function() { n2000.id = "abc";},
                  "attributeOldValue alone Element.id: update mutation");

  var n2001 = document.getElementById('n2001');
runMutationTest(n2001,
                  {"attributeFilter": ["id", "class"]},
                  [{type: "attributes", attributeName: "id"},
                   {type: "attributes", attributeName: "class"}],
                  function() { n2001.id = "abcd"; n2001.className = "c02"; n2001.setAttribute("lang", "fr");},
                  "attributeFilter alone Element.id/Element.className: multiple filter update mutation");

  var n3000 = document.getElementById('n3000');
runMutationTest(n3000,
                  {"subtree": true, "childList":false, "attributes" : true},
                  [{type: "attributes", attributeName: "id" }],
                  function() { n3000.textContent = "CHANGED"; n3000.id = "abc";},
                  "childList false: no childList mutation");

</script>