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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 type="application/javascript" 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.indexOf("PASSED") >= 0) {
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: function() {
document.getElementById("log").appendChild(document.createTextNode("DONE"));
},
waitForExplicitFinish: function() {}
}
}
function then(thenFn) {
setTimeout(function() {
if (thenFn) {
setTimeout(thenFn, 0);
} else {
SimpleTest.finish();
}
}, 0);
}
var m;
var m2;
var m3;
var m4;
// Checks basic parameter validation and normal 'this' handling.
// Tests also basic attribute handling.
function runTest() {
m = new M(function(){});
ok(m, "MutationObserver supported");
var e = null;
try {
m.observe(document, {});
} catch (ex) {
e = ex;
}
ok(e, "Should have thrown an exception");
is(e.name, "TypeError", "Should have thrown TypeError");
e = null;
try {
m.observe(document, { childList: true, attributeOldValue: true });
} catch (ex) {
e = ex;
}
ok(!e, "Shouldn't have thrown an exception");
e = null;
try {
m.observe(document, { childList: true, attributeFilter: ["foo"] });
} catch (ex) {
e = ex;
}
ok(!e, "Shouldn't have thrown an exception");
e = null;
try {
m.observe(document, { childList: true, characterDataOldValue: true });
} catch (ex) {
e = ex;
}
ok(!e, "Shouldn't have thrown an exception");
e = null;
try {
m.observe(document);
} catch (ex) {
e = ex;
}
ok(e, "Should have thrown an exception");
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"] });
is(SpecialPowers.wrap(div).getBoundMutationObservers()[0].getObservingInfo()[0].attributes, true);
is(SpecialPowers.wrap(div).getBoundMutationObservers()[0].getObservingInfo()[0].attributeFilter.length, 1)
is(SpecialPowers.wrap(div).getBoundMutationObservers()[0].getObservingInfo()[0].attributeFilter[0], "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 });
is(SpecialPowers.wrap(div).getBoundMutationObservers()[0].getObservingInfo()[0].attributes, true)
is(SpecialPowers.wrap(div).getBoundMutationObservers()[0].getObservingInfo()[0].attributeOldValue, true)
is(SpecialPowers.wrap(div).getBoundMutationObservers()[0].getObservingInfo()[0].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 });
is(SpecialPowers.wrap(div).getBoundMutationObservers().length, 3)
is(SpecialPowers.wrap(div).getBoundMutationObservers()[2].getObservingInfo()[0].characterData, true)
is(SpecialPowers.wrap(div).getBoundMutationObservers()[2].getObservingInfo()[0].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.removeChild(div.firstChild);
}
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 });
is(SpecialPowers.wrap(df).getBoundMutationObservers()[0].getObservingInfo()[0].childList, true)
is(SpecialPowers.wrap(df).getBoundMutationObservers()[0].getObservingInfo()[0].characterData, true)
is(SpecialPowers.wrap(df).getBoundMutationObservers()[0].getObservingInfo()[0].characterDataOldValue, true)
is(SpecialPowers.wrap(df).getBoundMutationObservers()[0].getObservingInfo()[0].subtree, true)
ok(SpecialPowers.compare(SpecialPowers.wrap(df).getBoundMutationObservers()[0].mutationCallback, callback))
m.observe(div, { childList: true });
is(SpecialPowers.wrap(df).getBoundMutationObservers()[0].getObservingInfo().length, 2)
// 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(records, observer) {
ok(m2WasCalled, "m2 should have been called before m3!");
is(records[0].type, "characterData", "Should have got characterData");
observer.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 });
// Note, [0] points to a mutation observer which is there for a leak test!
ok(SpecialPowers.compare(SpecialPowers.wrap(div).getBoundMutationObservers()[1], m));
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() {
var 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() {
var m = new M(function(records, observer) {
is(records.length, 1);
is(records[0].type, "attributes", "Should have got attributes");
observer.disconnect();
then(testInsideShadowDOM);
});
m.observe(div, {
attributes: true,
childList: true,
characterData: true,
subtree: true
})
var sr = div.createShadowRoot();
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 testInsideShadowDOM() {
var m = new M(function(records, observer) {
is(records.length, 4);
is(records[0].type, "childList");
is(records[1].type, "attributes");
is(records[2].type, "characterData");
is(records[3].type, "childList");
observer.disconnect();
then(testMarquee);
});
var sr = div.createShadowRoot();
m.observe(sr, {
attributes: true,
childList: true,
characterData: true,
subtree: true
});
sr.innerHTML = "<div" + ">text</" + "div>";
sr.firstChild.setAttribute("foo", "bar");
sr.firstChild.firstChild.data = "text2";
sr.firstChild.appendChild(document.createElement("div"));
div.setAttribute("foo", "bar2");
}
function testMarquee() {
var 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");
var 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");
var 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");
var 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");
var 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 nativeAnonymousChildList
try {
var mo = new M(function(records, observer) { });
mo.observe(div, { nativeAnonymousChildList: 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>
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