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authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-19 00:47:55 +0000
commit26a029d407be480d791972afb5975cf62c9360a6 (patch)
treef435a8308119effd964b339f76abb83a57c29483 /dom/base/test/test_mutationobservers.html
parentInitial commit. (diff)
downloadfirefox-26a029d407be480d791972afb5975cf62c9360a6.tar.xz
firefox-26a029d407be480d791972afb5975cf62c9360a6.zip
Adding upstream version 124.0.1.upstream/124.0.1
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=641821
+-->
+<head>
+ <meta charset="utf-8">
+ <title>Test for Bug 641821</title>
+ <script src="/tests/SimpleTest/SimpleTest.js"></script>
+ <link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
+</head>
+<body onload="runTest()">
+<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=641821">Mozilla Bug 641821</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+/** Test for Bug 641821 **/
+
+SimpleTest.requestFlakyTimeout("requestFlakyTimeout is silly. (But make sure marquee has time to initialize itself.)");
+
+var div = document.createElement("div");
+
+var M;
+if ("MozMutationObserver" in window) {
+ M = window.MozMutationObserver;
+} else if ("WebKitMutationObserver" in window) {
+ M = window.WebKitMutationObserver;
+} else {
+ M = window.MutationObserver;
+}
+
+function log(str) {
+ var d = document.createElement("div");
+ d.textContent = str;
+ if (str.includes("PASSED")) {
+ d.setAttribute("style", "color: green;");
+ } else {
+ d.setAttribute("style", "color: red;");
+ }
+ document.getElementById("log").appendChild(d);
+}
+
+// Some helper functions so that this test runs also outside mochitest.
+if (!("ok" in window)) {
+ window.ok = function(val, str) {
+ log(str + (val ? " PASSED\n" : " FAILED\n"));
+ }
+}
+
+if (!("is" in window)) {
+ window.is = function(val, refVal, str) {
+ log(str + (val == refVal? " PASSED " : " FAILED ") +
+ (val != refVal ? "expected " + refVal + " got " + val + "\n" : "\n"));
+ }
+}
+
+if (!("isnot" in window)) {
+ window.isnot = function(val, refVal, str) {
+ log(str + (val != refVal? " PASSED " : " FAILED ") +
+ (val == refVal ? "Didn't expect " + refVal + "\n" : "\n"));
+ }
+}
+
+if (!("SimpleTest" in window)) {
+ window.SimpleTest =
+ {
+ finish() {
+ document.getElementById("log").appendChild(document.createTextNode("DONE"));
+ },
+ waitForExplicitFinish() {}
+ }
+}
+
+function then(thenFn) {
+ setTimeout(function() {
+ if (thenFn) {
+ setTimeout(thenFn, 0);
+ } else {
+ SimpleTest.finish();
+ }
+ }, 0);
+}
+
+var m;
+var m2;
+var m3;
+var m4;
+
+// Checks normal 'this' handling.
+// Tests also basic attribute handling.
+function runTest() {
+ m = new M(function(records, observer) {
+ is(observer, m, "2nd parameter should be the mutation observer");
+ is(observer, this, "2nd parameter should be 'this'");
+ is(records.length, 1, "Should have one record.");
+ is(records[0].type, "attributes", "Should have got attributes record");
+ is(records[0].target, div, "Should have got div as target");
+ is(records[0].attributeName, "foo", "Should have got record about foo attribute");
+ observer.disconnect();
+ then(testThisBind);
+ m = null;
+ });
+ m.observe(div, { attributes: true, attributeFilter: ["foo"] });
+ div.setAttribute("foo", "bar");
+}
+
+// 'this' handling when fn.bind() is used.
+function testThisBind() {
+ var child = div.appendChild(document.createElement("div"));
+ var gchild = child.appendChild(document.createElement("div"));
+ m = new M((function(records, observer) {
+ is(observer, m, "2nd parameter should be the mutation observer");
+ isnot(observer, this, "2nd parameter should be 'this'");
+ is(records.length, 3, "Should have one record.");
+ is(records[0].type, "attributes", "Should have got attributes record");
+ is(records[0].target, div, "Should have got div as target");
+ is(records[0].attributeName, "foo", "Should have got record about foo attribute");
+ is(records[0].oldValue, "bar", "oldValue should be bar");
+ is(records[1].type, "attributes", "Should have got attributes record");
+ is(records[1].target, div, "Should have got div as target");
+ is(records[1].attributeName, "foo", "Should have got record about foo attribute");
+ is(records[1].oldValue, "bar2", "oldValue should be bar2");
+ is(records[2].type, "attributes", "Should have got attributes record");
+ is(records[2].target, gchild, "Should have got div as target");
+ is(records[2].attributeName, "foo", "Should have got record about foo attribute");
+ is(records[2].oldValue, null, "oldValue should be bar2");
+ observer.disconnect();
+ then(testCharacterData);
+ m = null;
+ }).bind(window));
+ m.observe(div, { attributes: true, attributeOldValue: true, subtree: true });
+ div.setAttribute("foo", "bar2");
+ div.removeAttribute("foo");
+ div.removeChild(child);
+ child.removeChild(gchild);
+ div.appendChild(gchild);
+ div.removeChild(gchild);
+ gchild.setAttribute("foo", "bar");
+}
+
+function testCharacterData() {
+ m = new M(function(records, observer) {
+ is(records[0].type, "characterData", "Should have got characterData");
+ is(records[0].oldValue, null, "Shouldn't have got oldData");
+ observer.disconnect();
+ m = null;
+ });
+ m2 = new M(function(records, observer) {
+ is(records[0].type, "characterData", "Should have got characterData");
+ is(records[0].oldValue, "foo", "Should have got oldData");
+ observer.disconnect();
+ m2 = null;
+ });
+ m3 = new M(function(records, observer) {
+ ok(false, "This should not be called!");
+ observer.disconnect();
+ m3 = null;
+ });
+ m4 = new M(function(records, observer) {
+ is(records[0].oldValue, null, "Shouldn't have got oldData");
+ observer.disconnect();
+ m3.disconnect();
+ m3 = null;
+ then(testChildList);
+ m4 = null;
+ });
+
+ div.appendChild(document.createTextNode("foo"));
+ m.observe(div, { characterData: true, subtree: true });
+ m2.observe(div, { characterData: true, characterDataOldValue: true, subtree: true});
+ // If observing the same node twice, only the latter option should apply.
+ m3.observe(div, { characterData: true, subtree: true });
+ m3.observe(div, { characterData: true, subtree: false });
+ m4.observe(div.firstChild, { characterData: true, subtree: false });
+
+ div.firstChild.data = "bar";
+}
+
+function testChildList() {
+ var fc = div.firstChild;
+ m = new M(function(records, observer) {
+ is(records[0].type, "childList", "Should have got childList");
+ is(records[0].addedNodes.length, 0, "Shouldn't have got addedNodes");
+ is(records[0].removedNodes.length, 1, "Should have got removedNodes");
+ is(records[0].removedNodes[0], fc, "Should have removed a text node");
+ observer.disconnect();
+ then(testChildList2);
+ m = null;
+ });
+ m.observe(div, { childList: true});
+ div.firstChild.remove();
+}
+
+function testChildList2() {
+ div.innerHTML = "<span>1</span><span>2</span>";
+ m = new M(function(records, observer) {
+ is(records[0].type, "childList", "Should have got childList");
+ is(records[0].removedNodes.length, 2, "Should have got removedNodes");
+ is(records[0].addedNodes.length, 1, "Should have got addedNodes");
+ observer.disconnect();
+ then(testChildList3);
+ m = null;
+ });
+ m.observe(div, { childList: true });
+ div.innerHTML = "<span><span>foo</span></span>";
+}
+
+function testChildList3() {
+ m = new M(function(records, observer) {
+ is(records[0].type, "childList", "Should have got childList");
+ is(records[0].removedNodes.length, 1, "Should have got removedNodes");
+ is(records[0].addedNodes.length, 1, "Should have got addedNodes");
+ observer.disconnect();
+ then(testChildList4);
+ m = null;
+ });
+ m.observe(div, { childList: true });
+ div.textContent = "hello";
+}
+
+function testChildList4() {
+ div.textContent = null;
+ var df = document.createDocumentFragment();
+ var t1 = df.appendChild(document.createTextNode("Hello "));
+ var t2 = df.appendChild(document.createTextNode("world!"));
+ var s1 = div.appendChild(document.createElement("span"));
+ s1.textContent = "foo";
+ var s2 = div.appendChild(document.createElement("span"));
+ function callback(records, observer) {
+ is(records.length, 3, "Should have got one record for removing nodes from document fragment and one record for adding them to div");
+ is(records[0].removedNodes.length, 2, "Should have got removedNodes");
+ is(records[0].removedNodes[0], t1, "Should be the 1st textnode");
+ is(records[0].removedNodes[1], t2, "Should be the 2nd textnode");
+ is(records[1].addedNodes.length, 2, "Should have got addedNodes");
+ is(records[1].addedNodes[0], t1, "Should be the 1st textnode");
+ is(records[1].addedNodes[1], t2, "Should be the 2nd textnode");
+ is(records[1].previousSibling, s1, "Should have previousSibling");
+ is(records[1].nextSibling, s2, "Should have nextSibling");
+ is(records[2].type, "characterData", "3rd record should be characterData");
+ is(records[2].target, t1, "target should be the textnode");
+ is(records[2].oldValue, "Hello ", "oldValue was 'Hello '");
+ observer.disconnect();
+ then(testChildList5);
+ m = null;
+ };
+ m = new M(callback);
+ m.observe(df, { childList: true, characterData: true, characterDataOldValue: true, subtree: true });
+ m.observe(div, { childList: true });
+
+ // Make sure transient observers aren't leaked.
+ var leakTest = new M(function(){});
+ leakTest.observe(div, { characterData: true, subtree: true });
+
+ div.insertBefore(df, s2);
+ s1.firstChild.data = "bar"; // This should *not* create a record.
+ t1.data = "Hello the whole "; // This should create a record.
+}
+
+function testChildList5() {
+ div.textContent = null;
+ var c1 = div.appendChild(document.createElement("div"));
+ var c2 = document.createElement("div");
+ var div2 = document.createElement("div");
+ var c3 = div2.appendChild(document.createElement("div"));
+ var c4 = document.createElement("div");
+ var c5 = document.createElement("div");
+ var df = document.createDocumentFragment();
+ var emptyDF = document.createDocumentFragment();
+ var dfc1 = df.appendChild(document.createElement("div"));
+ var dfc2 = df.appendChild(document.createElement("div"));
+ var dfc3 = df.appendChild(document.createElement("div"));
+ m = new M(function(records, observer) {
+ is(records.length, 6 , "");
+ is(records[0].removedNodes.length, 1, "Should have got removedNodes");
+ is(records[0].removedNodes[0], c1, "");
+ is(records[0].addedNodes.length, 1, "Should have got addedNodes");
+ is(records[0].addedNodes[0], c2, "");
+ is(records[0].previousSibling, null, "");
+ is(records[0].nextSibling, null, "");
+ is(records[1].removedNodes.length, 1, "Should have got removedNodes");
+ is(records[1].removedNodes[0], c3, "");
+ is(records[1].addedNodes.length, 0, "Shouldn't have got addedNodes");
+ is(records[1].previousSibling, null, "");
+ is(records[1].nextSibling, null, "");
+ is(records[2].removedNodes.length, 1, "Should have got removedNodes");
+ is(records[2].removedNodes[0], c2, "");
+ is(records[2].addedNodes.length, 1, "Should have got addedNodes");
+ is(records[2].addedNodes[0], c3, "");
+ is(records[2].previousSibling, null, "");
+ is(records[2].nextSibling, null, "");
+ // Check document fragment handling
+ is(records[5].removedNodes.length, 1, "");
+ is(records[5].removedNodes[0], c4, "");
+ is(records[5].addedNodes.length, 3, "");
+ is(records[5].addedNodes[0], dfc1, "");
+ is(records[5].addedNodes[1], dfc2, "");
+ is(records[5].addedNodes[2], dfc3, "");
+ is(records[5].previousSibling, c3, "");
+ is(records[5].nextSibling, c5, "");
+ observer.disconnect();
+ then(testNestedMutations);
+ m = null;
+ });
+ m.observe(div, { childList: true, subtree: true });
+ m.observe(div2, { childList: true, subtree: true });
+ div.replaceChild(c2, c1);
+ div.replaceChild(c3, c2);
+ div.appendChild(c4);
+ div.appendChild(c5);
+ div.replaceChild(df, c4);
+ div.appendChild(emptyDF); // empty document shouldn't cause mutation records
+}
+
+function testNestedMutations() {
+ div.textContent = null;
+ div.appendChild(document.createTextNode("foo"));
+ var m2WasCalled = false;
+ m = new M(function(records, observer) {
+ is(records[0].type, "characterData", "Should have got characterData");
+ observer.disconnect();
+ m = null;
+ m3 = new M(function(recordsInner, observerInnder) {
+ ok(m2WasCalled, "m2 should have been called before m3!");
+ is(recordsInner[0].type, "characterData", "Should have got characterData");
+ observerInnder.disconnect();
+ then(testAdoptNode);
+ m3 = null;
+ });
+ m3.observe(div, { characterData: true, subtree: true});
+ div.firstChild.data = "foo";
+ });
+ m2 = new M(function(records, observer) {
+ m2WasCalled = true;
+ is(records[0].type, "characterData", "Should have got characterData");
+ observer.disconnect();
+ m2 = null;
+ });
+ m2.observe(div, { characterData: true, subtree: true});
+ div.appendChild(document.createTextNode("foo"));
+ m.observe(div, { characterData: true, subtree: true });
+
+ div.firstChild.data = "bar";
+}
+
+function testAdoptNode() {
+ var d1 = document.implementation.createHTMLDocument(null);
+ var d2 = document.implementation.createHTMLDocument(null);
+ var addedNode;
+ m = new M(function(records, observer) {
+ is(records.length, 3, "Should have 2 records");
+ is(records[0].target.ownerDocument, d1, "ownerDocument should be the initial document")
+ is(records[1].target.ownerDocument, d2, "ownerDocument should be the new document");
+ is(records[2].type, "attributes", "Should have got attribute mutation")
+ is(records[2].attributeName, "foo", "Should have got foo attribute mutation")
+ observer.disconnect();
+ then(testOuterHTML);
+ m = null;
+ });
+ m.observe(d1, { childList: true, subtree: true, attributes: true });
+ d2.body.appendChild(d1.body);
+ addedNode = d2.body.lastChild.appendChild(d2.createElement("div"));
+ addedNode.setAttribute("foo", "bar");
+}
+
+function testOuterHTML() {
+ var doc = document.implementation.createHTMLDocument(null);
+ var d1 = doc.body.appendChild(document.createElement("div"));
+ var d2 = doc.body.appendChild(document.createElement("div"));
+ var d3 = doc.body.appendChild(document.createElement("div"));
+ var d4 = doc.body.appendChild(document.createElement("div"));
+ m = new M(function(records, observer) {
+ is(records.length, 4, "Should have 1 record");
+ is(records[0].removedNodes.length, 1, "Should have 1 removed nodes");
+ is(records[0].addedNodes.length, 2, "Should have 2 added nodes");
+ is(records[0].previousSibling, null, "");
+ is(records[0].nextSibling, d2, "");
+ is(records[1].removedNodes.length, 1, "Should have 1 removed nodes");
+ is(records[1].addedNodes.length, 2, "Should have 2 added nodes");
+ is(records[1].previousSibling, records[0].addedNodes[1], "");
+ is(records[1].nextSibling, d3, "");
+ is(records[2].removedNodes.length, 1, "Should have 1 removed nodes");
+ is(records[2].addedNodes.length, 2, "Should have 2 added nodes");
+ is(records[2].previousSibling, records[1].addedNodes[1], "");
+ is(records[2].nextSibling, d4, "");
+ is(records[3].removedNodes.length, 1, "Should have 1 removed nodes");
+ is(records[3].addedNodes.length, 0);
+ is(records[3].previousSibling, records[2].addedNodes[1], "");
+ is(records[3].nextSibling, null, "");
+ observer.disconnect();
+ then(testInsertAdjacentHTML);
+ m = null;
+ });
+ m.observe(doc, { childList: true, subtree: true });
+ d1.outerHTML = "<div>1</div><div>1</div>";
+ d2.outerHTML = "<div>2</div><div>2</div>";
+ d3.outerHTML = "<div>3</div><div>3</div>";
+ d4.outerHTML = "";
+}
+
+function testInsertAdjacentHTML() {
+ var doc = document.implementation.createHTMLDocument(null);
+ var d1 = doc.body.appendChild(document.createElement("div"));
+ var d2 = doc.body.appendChild(document.createElement("div"));
+ var d3 = doc.body.appendChild(document.createElement("div"));
+ var d4 = doc.body.appendChild(document.createElement("div"));
+ m = new M(function(records, observer) {
+ is(records.length, 4, "");
+ is(records[0].target, doc.body, "");
+ is(records[0].previousSibling, null, "");
+ is(records[0].nextSibling, d1, "");
+ is(records[1].target, d2, "");
+ is(records[1].previousSibling, null, "");
+ is(records[1].nextSibling, null, "");
+ is(records[2].target, d3, "");
+ is(records[2].previousSibling, null, "");
+ is(records[2].nextSibling, null, "");
+ is(records[3].target, doc.body, "");
+ is(records[3].previousSibling, d4, "");
+ is(records[3].nextSibling, null, "");
+ observer.disconnect();
+ then(testSyncXHR);
+ m = null;
+ });
+ m.observe(doc, { childList: true, subtree: true });
+ d1.insertAdjacentHTML("beforebegin", "<div></div><div></div>");
+ d2.insertAdjacentHTML("afterbegin", "<div></div><div></div>");
+ d3.insertAdjacentHTML("beforeend", "<div></div><div></div>");
+ d4.insertAdjacentHTML("afterend", "<div></div><div></div>");
+}
+
+
+var callbackHandled = false;
+
+function testSyncXHR() {
+ div.textContent = null;
+ m = new M(function(records, observer) {
+ is(records.length, 1, "");
+ is(records[0].addedNodes.length, 1, "");
+ callbackHandled = true;
+ observer.disconnect();
+ m = null;
+ });
+ m.observe(div, { childList: true, subtree: true });
+ div.innerHTML = "<div>hello</div>";
+ var x = new XMLHttpRequest();
+ x.open("GET", window.location, false);
+ x.send();
+ ok(!callbackHandled, "Shouldn't have called the mutation callback!");
+ setTimeout(testSyncXHR2, 0);
+}
+
+function testSyncXHR2() {
+ ok(callbackHandled, "Should have called the mutation callback!");
+ then(testTakeRecords);
+}
+
+function testTakeRecords() {
+ var s = "<span>1</span><span>2</span>";
+ div.innerHTML = s;
+ var takenRecords;
+ m = new M(function(records, observer) {
+ is(records.length, 3, "Should have got 3 records");
+
+ is(records[0].type, "attributes", "Should have got attributes");
+ is(records[0].attributeName, "foo", "");
+ is(records[0].attributeNamespace, null, "");
+ is(records[0].prevValue, null, "");
+ is(records[1].type, "childList", "Should have got childList");
+ is(records[1].removedNodes.length, 2, "Should have got removedNodes");
+ is(records[1].addedNodes.length, 2, "Should have got addedNodes");
+ is(records[2].type, "attributes", "Should have got attributes");
+ is(records[2].attributeName, "foo", "");
+
+ is(records.length, takenRecords.length, "Should have had similar mutations");
+ is(records[0].type, takenRecords[0].type, "Should have had similar mutations");
+ is(records[1].type, takenRecords[1].type, "Should have had similar mutations");
+ is(records[2].type, takenRecords[2].type, "Should have had similar mutations");
+
+ is(records[1].removedNodes.length, takenRecords[1].removedNodes.length, "Should have had similar mutations");
+ is(records[1].addedNodes.length, takenRecords[1].addedNodes.length, "Should have had similar mutations");
+
+ is(m.takeRecords().length, 0, "Shouldn't have any records");
+ observer.disconnect();
+ then(testMutationObserverAndEvents);
+ m = null;
+ });
+ m.observe(div, { childList: true, attributes: true });
+ div.setAttribute("foo", "bar");
+ div.innerHTML = s;
+ div.removeAttribute("foo");
+ takenRecords = m.takeRecords();
+ div.setAttribute("foo", "bar");
+ div.innerHTML = s;
+ div.removeAttribute("foo");
+}
+
+function testTakeRecords() {
+ function mutationListener(e) {
+ ++mutationEventCount;
+ is(e.attrChange, MutationEvent.ADDITION, "unexpected change");
+ }
+
+ m = new M(function(records, observer) {
+ is(records.length, 2, "Should have got 2 records");
+ is(records[0].type, "attributes", "Should have got attributes");
+ is(records[0].attributeName, "foo", "");
+ is(records[0].oldValue, null, "");
+ is(records[1].type, "attributes", "Should have got attributes");
+ is(records[1].attributeName, "foo", "");
+ is(records[1].oldValue, "bar", "");
+ observer.disconnect();
+ div.removeEventListener("DOMAttrModified", mutationListener);
+ then(testExpandos);
+ m = null;
+ });
+ m.observe(div, { attributes: true, attributeOldValue: true });
+ var mutationEventCount = 0;
+ div.addEventListener("DOMAttrModified", mutationListener);
+ div.setAttribute("foo", "bar");
+ div.setAttribute("foo", "bar");
+ is(mutationEventCount, 1, "Should have got only one mutation event!");
+}
+
+function testExpandos() {
+ m2 = new M(function(records, observer) {
+ is(observer.expandoProperty, true);
+ observer.disconnect();
+ then(testOutsideShadowDOM);
+ });
+ m2.expandoProperty = true;
+ m2.observe(div, { attributes: true });
+ m2 = null;
+ if (SpecialPowers) {
+ // Run GC several times to see if the expando property disappears.
+
+ SpecialPowers.gc();
+ SpecialPowers.gc();
+ SpecialPowers.gc();
+ SpecialPowers.gc();
+ }
+ div.setAttribute("foo", "bar2");
+}
+
+function testOutsideShadowDOM() {
+ if (!div.attachShadow) {
+ todo(false, "Skipping testOutsideShadowDOM and testInsideShadowDOM " +
+ "because attachShadow is not supported");
+ then(testMarquee);
+ return;
+ }
+ m = new M(function(records, observer) {
+ is(records.length, 1);
+ is(records[0].type, "attributes", "Should have got attributes");
+ observer.disconnect();
+ then(testMarquee);
+ });
+ m.observe(div, {
+ attributes: true,
+ childList: true,
+ characterData: true,
+ subtree: true
+ })
+ var sr = div.attachShadow({ mode: "open" });
+ sr.innerHTML = "<div" + ">text</" + "div>";
+ sr.firstChild.setAttribute("foo", "bar");
+ sr.firstChild.firstChild.data = "text2";
+ sr.firstChild.appendChild(document.createElement("div"));
+ div.setAttribute("foo", "bar");
+}
+
+function testMarquee() {
+ m = new M(function(records, observer) {
+ is(records.length, 1);
+ is(records[0].type, "attributes");
+ is(records[0].attributeName, "ok");
+ is(records[0].oldValue, null);
+ observer.disconnect();
+ then(testStyleCreate);
+ });
+ var marquee = document.createElement("marquee");
+ m.observe(marquee, {
+ attributes: true,
+ attributeOldValue: true,
+ childList: true,
+ characterData: true,
+ subtree: true
+ });
+ document.body.appendChild(marquee);
+ setTimeout(function() {marquee.setAttribute("ok", "ok")}, 500);
+}
+
+function testStyleCreate() {
+ m = new M(function(records, observer) {
+ is(records.length, 1, "number of records");
+ is(records[0].type, "attributes", "record.type");
+ is(records[0].attributeName, "style", "record.attributeName");
+ is(records[0].oldValue, null, "record.oldValue");
+ isnot(div.getAttribute("style"), null, "style attribute after creation");
+ observer.disconnect();
+ m = null;
+ div.removeAttribute("style");
+ then(testStyleModify);
+ });
+ m.observe(div, { attributes: true, attributeOldValue: true });
+ is(div.getAttribute("style"), null, "style attribute before creation");
+ div.style.color = "blue";
+}
+
+function testStyleModify() {
+ div.style.color = "yellow";
+ m = new M(function(records, observer) {
+ is(records.length, 1, "number of records");
+ is(records[0].type, "attributes", "record.type");
+ is(records[0].attributeName, "style", "record.attributeName");
+ isnot(div.getAttribute("style"), null, "style attribute after modification");
+ observer.disconnect();
+ m = null;
+ div.removeAttribute("style");
+ then(testStyleRead);
+ });
+ m.observe(div, { attributes: true });
+ isnot(div.getAttribute("style"), null, "style attribute before modification");
+ div.style.color = "blue";
+}
+
+function testStyleRead() {
+ m = new M(function(records, observer) {
+ is(records.length, 1, "number of records");
+ is(records[0].type, "attributes", "record.type");
+ is(records[0].attributeName, "data-test", "record.attributeName");
+ is(div.getAttribute("style"), null, "style attribute after read");
+ observer.disconnect();
+ div.removeAttribute("data-test");
+ m = null;
+ then(testStyleRemoveProperty);
+ });
+ m.observe(div, { attributes: true });
+ is(div.getAttribute("style"), null, "style attribute before read");
+ var value = div.style.color; // shouldn't generate any mutation records
+ div.setAttribute("data-test", "a");
+}
+
+function testStyleRemoveProperty() {
+ div.style.color = "blue";
+ m = new M(function(records, observer) {
+ is(records.length, 1, "number of records");
+ is(records[0].type, "attributes", "record.type");
+ is(records[0].attributeName, "style", "record.attributeName");
+ isnot(div.getAttribute("style"), null, "style attribute after successful removeProperty");
+ observer.disconnect();
+ m = null;
+ div.removeAttribute("style");
+ then(testStyleRemoveProperty2);
+ });
+ m.observe(div, { attributes: true });
+ isnot(div.getAttribute("style"), null, "style attribute before successful removeProperty");
+ div.style.removeProperty("color");
+}
+
+function testStyleRemoveProperty2() {
+ m = new M(function(records, observer) {
+ is(records.length, 1, "number of records");
+ is(records[0].type, "attributes", "record.type");
+ is(records[0].attributeName, "data-test", "record.attributeName");
+ is(div.getAttribute("style"), null, "style attribute after unsuccessful removeProperty");
+ observer.disconnect();
+ m = null;
+ div.removeAttribute("data-test");
+ then(testAttributeRecordMerging1);
+ });
+ m.observe(div, { attributes: true });
+ is(div.getAttribute("style"), null, "style attribute before unsuccessful removeProperty");
+ div.style.removeProperty("color"); // shouldn't generate any mutation records
+ div.setAttribute("data-test", "a");
+}
+
+function testAttributeRecordMerging1() {
+ ok(true, "testAttributeRecordMerging1");
+ m = new M(function(records, observer) {
+ is(records.length, 2);
+ is(records[0].type, "attributes");
+ is(records[0].target, div);
+ is(records[0].attributeName, "foo");
+ is(records[0].attributeNamespace, null);
+ is(records[0].oldValue, null);
+
+ is(records[1].type, "attributes");
+ is(records[1].target, div.firstChild);
+ is(records[1].attributeName, "foo");
+ is(records[1].attributeNamespace, null);
+ is(records[1].oldValue, null);
+ observer.disconnect();
+ div.innerHTML = "";
+ div.removeAttribute("foo");
+ then(testAttributeRecordMerging2);
+ });
+ m.observe(div, {
+ attributes: true,
+ subtree: true
+ });
+ SpecialPowers.wrap(m).mergeAttributeRecords = true;
+
+ div.setAttribute("foo", "bar_1");
+ div.setAttribute("foo", "bar_2");
+ div.innerHTML = "<div></div>";
+ div.firstChild.setAttribute("foo", "bar_1");
+ div.firstChild.setAttribute("foo", "bar_2");
+}
+
+function testAttributeRecordMerging2() {
+ ok(true, "testAttributeRecordMerging2");
+ m = new M(function(records, observer) {
+ is(records.length, 2);
+ is(records[0].type, "attributes");
+ is(records[0].target, div);
+ is(records[0].attributeName, "foo");
+ is(records[0].attributeNamespace, null);
+ is(records[0].oldValue, "initial");
+
+ is(records[1].type, "attributes");
+ is(records[1].target, div.firstChild);
+ is(records[1].attributeName, "foo");
+ is(records[1].attributeNamespace, null);
+ is(records[1].oldValue, "initial");
+ observer.disconnect();
+ div.innerHTML = "";
+ div.removeAttribute("foo");
+ then(testAttributeRecordMerging3);
+ });
+
+ div.setAttribute("foo", "initial");
+ div.innerHTML = "<div></div>";
+ div.firstChild.setAttribute("foo", "initial");
+ m.observe(div, {
+ attributes: true,
+ subtree: true,
+ attributeOldValue: true
+ });
+ SpecialPowers.wrap(m).mergeAttributeRecords = true;
+
+ div.setAttribute("foo", "bar_1");
+ div.setAttribute("foo", "bar_2");
+ div.firstChild.setAttribute("foo", "bar_1");
+ div.firstChild.setAttribute("foo", "bar_2");
+}
+
+function testAttributeRecordMerging3() {
+ ok(true, "testAttributeRecordMerging3");
+ m = new M(function(records, observer) {
+ is(records.length, 4);
+ is(records[0].type, "attributes");
+ is(records[0].target, div);
+ is(records[0].attributeName, "foo");
+ is(records[0].attributeNamespace, null);
+ is(records[0].oldValue, "initial");
+
+ is(records[1].type, "attributes");
+ is(records[1].target, div.firstChild);
+ is(records[1].attributeName, "foo");
+ is(records[1].attributeNamespace, null);
+ is(records[1].oldValue, "initial");
+
+ is(records[2].type, "attributes");
+ is(records[2].target, div);
+ is(records[2].attributeName, "foo");
+ is(records[2].attributeNamespace, null);
+ is(records[2].oldValue, "bar_1");
+
+ is(records[3].type, "attributes");
+ is(records[3].target, div.firstChild);
+ is(records[3].attributeName, "foo");
+ is(records[3].attributeNamespace, null);
+ is(records[3].oldValue, "bar_1");
+
+ observer.disconnect();
+ div.innerHTML = "";
+ div.removeAttribute("foo");
+ then(testAttributeRecordMerging4);
+ });
+
+ div.setAttribute("foo", "initial");
+ div.innerHTML = "<div></div>";
+ div.firstChild.setAttribute("foo", "initial");
+ m.observe(div, {
+ attributes: true,
+ subtree: true,
+ attributeOldValue: true
+ });
+ SpecialPowers.wrap(m).mergeAttributeRecords = true;
+
+ // No merging should happen.
+ div.setAttribute("foo", "bar_1");
+ div.firstChild.setAttribute("foo", "bar_1");
+ div.setAttribute("foo", "bar_2");
+ div.firstChild.setAttribute("foo", "bar_2");
+}
+
+function testAttributeRecordMerging4() {
+ ok(true, "testAttributeRecordMerging4");
+ m = new M(function(records, observer) {
+ });
+
+ div.setAttribute("foo", "initial");
+ div.innerHTML = "<div></div>";
+ div.firstChild.setAttribute("foo", "initial");
+ m.observe(div, {
+ attributes: true,
+ subtree: true,
+ attributeOldValue: true
+ });
+ SpecialPowers.wrap(m).mergeAttributeRecords = true;
+
+ div.setAttribute("foo", "bar_1");
+ div.setAttribute("foo", "bar_2");
+ div.firstChild.setAttribute("foo", "bar_1");
+ div.firstChild.setAttribute("foo", "bar_2");
+
+ var records = m.takeRecords();
+
+ is(records.length, 2);
+ is(records[0].type, "attributes");
+ is(records[0].target, div);
+ is(records[0].attributeName, "foo");
+ is(records[0].attributeNamespace, null);
+ is(records[0].oldValue, "initial");
+
+ is(records[1].type, "attributes");
+ is(records[1].target, div.firstChild);
+ is(records[1].attributeName, "foo");
+ is(records[1].attributeNamespace, null);
+ is(records[1].oldValue, "initial");
+ m.disconnect();
+ div.innerHTML = "";
+ div.removeAttribute("foo");
+ then(testChromeOnly);
+}
+
+function testChromeOnly() {
+ // Content can't access chromeOnlyNodes
+ try {
+ var mo = new M(function(records, observer) { });
+ mo.observe(div, { chromeOnlyNodes: true });
+ ok(false, "Should have thrown when trying to observe with chrome-only init");
+ } catch (e) {
+ ok(true, "Throws when trying to observe with chrome-only init");
+ }
+
+ then();
+}
+
+SimpleTest.waitForExplicitFinish();
+
+</script>
+</pre>
+<div id="log">
+</div>
+</body>
+</html>