<!DOCTYPE HTML>
<html>
<!--
https://bugzilla.mozilla.org/show_bug.cgi?id=1034110
-->
<head>
<title>Test for Bug 1034110</title>
<script type="application/javascript" src="/tests/SimpleTest/SimpleTest.js"></script>
<script type="application/javascript" src="/tests/SimpleTest/EventUtils.js"></script>
<link rel="stylesheet" type="text/css" href="/tests/SimpleTest/test.css"/>
</head>
<body>
<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=1034110">Mozilla Bug 1034110</a>
<style type="text/css">
#pseudo.before::before { content: "before"; }
#pseudo.after::after { content: "after"; }
</style>
<div id="pseudo"></div>
<video id="video"></video>
<p id="display"></p>
<div id="content" style="display: none">
</div>
<pre id="test">
<script type="application/javascript">
/** Test for Bug 1034110 **/
SimpleTest.waitForExplicitFinish();
function getWalker(node) {
return SpecialPowers.createDOMWalker(node, true);
}
function getFirstChild(parent) {
return SpecialPowers.unwrap(getWalker(parent).firstChild);
}
function getLastChild(parent) {
return SpecialPowers.unwrap(getWalker(parent).lastChild);
}
function assertSamePseudoElement(which, node1, node2) {
is(SpecialPowers.wrap(node1).nodeName, "_moz_generated_content_" + which,
"Correct pseudo element type");
is(node1, node2,
"Referencing the same ::after element");
}
window.onload = function () {
testOneAdded();
};
function testOneAdded() {
let parent = document.getElementById("pseudo");
var m = new MutationObserver(function(records, observer) {
is(records.length, 1, "Correct number of records");
is(records[0].type, "nativeAnonymousChildList", "Correct record type");
is(records[0].target, parent, "Correct target");
is(records[0].addedNodes.length, 1, "Should have got addedNodes");
assertSamePseudoElement("before", records[0].addedNodes[0], getFirstChild(parent));
is(records[0].removedNodes.length, 0, "Shouldn't have got removedNodes");
observer.disconnect();
testAddedAndRemoved();
});
SpecialPowers.observeMutationEvents(m, parent, true);
parent.className = "before";
}
function testAddedAndRemoved() {
let parent = document.getElementById("pseudo");
let originalBeforeElement = getFirstChild(parent);
var m = new MutationObserver(function(records, observer) {
is(records.length, 2, "Correct number of records");
is(records[0].type, "nativeAnonymousChildList", "Correct record type (1)");
is(records[1].type, "nativeAnonymousChildList", "Correct record type (2)");
is(records[0].target, parent, "Correct target (1)");
is(records[1].target, parent, "Correct target (2)");
// Two records are sent - one for removed and one for added.
is(records[0].addedNodes.length, 0, "Shouldn't have got addedNodes");
is(records[0].removedNodes.length, 1, "Should have got removedNodes");
assertSamePseudoElement("before", records[0].removedNodes[0], originalBeforeElement);
is(records[1].addedNodes.length, 1, "Should have got addedNodes");
assertSamePseudoElement("after", records[1].addedNodes[0], getLastChild(parent));
is(records[1].removedNodes.length, 0, "Shouldn't have got removedNodes");
observer.disconnect();
testRemoved();
});
SpecialPowers.observeMutationEvents(m, parent, true);
parent.className = "after";
}
function testRemoved() {
let parent = document.getElementById("pseudo");
let originalAfterElement = getLastChild(parent);
var m = new MutationObserver(function(records, observer) {
is(records.length, 1, "Correct number of records");
is(records[0].type, "nativeAnonymousChildList", "Correct record type");
is(records[0].target, parent, "Correct target");
is(records[0].addedNodes.length, 0, "Shouldn't have got addedNodes");
is(records[0].removedNodes.length, 1, "Should have got removedNodes");
assertSamePseudoElement("after", records[0].removedNodes[0], originalAfterElement);
observer.disconnect();
testMultipleAdded();
});
SpecialPowers.observeMutationEvents(m, parent, true);
parent.className = "";
}
function testMultipleAdded() {
let parent = document.getElementById("pseudo");
var m = new MutationObserver(function(records, observer) {
is(records.length, 2, "Correct number of records");
is(records[0].type, "nativeAnonymousChildList", "Correct record type (1)");
is(records[1].type, "nativeAnonymousChildList", "Correct record type (2)");
is(records[0].target, parent, "Correct target (1)");
is(records[1].target, parent, "Correct target (2)");
is(records[0].addedNodes.length, 1, "Should have got addedNodes");
assertSamePseudoElement("before", records[0].addedNodes[0], getFirstChild(parent));
is(records[0].removedNodes.length, 0, "Shouldn't have got removedNodes");
is(records[1].addedNodes.length, 1, "Should have got addedNodes");
assertSamePseudoElement("after", records[1].addedNodes[0], getLastChild(parent));
is(records[1].removedNodes.length, 0, "Shouldn't have got removedNodes");
observer.disconnect();
testRemovedDueToDisplay();
});
SpecialPowers.observeMutationEvents(m, parent, true);
parent.className = "before after";
}
function testRemovedDueToDisplay() {
let parent = document.getElementById("pseudo");
let originalBeforeElement = getFirstChild(parent);
let originalAfterElement = getLastChild(parent);
var m = new MutationObserver(function(records, observer) {
is(records.length, 2, "Correct number of records");
is(records[0].type, "nativeAnonymousChildList", "Correct record type (1)");
is(records[1].type, "nativeAnonymousChildList", "Correct record type (2)");
is(records[0].target, parent, "Correct target (1)");
is(records[1].target, parent, "Correct target (2)");
is(records[0].addedNodes.length, 0, "Shouldn't have got addedNodes");
is(records[0].removedNodes.length, 1, "Should have got removedNodes");
assertSamePseudoElement("after", records[0].removedNodes[0], originalAfterElement);
is(records[1].addedNodes.length, 0, "Shouldn't have got addedNodes");
is(records[1].removedNodes.length, 1, "Should have got removedNodes");
assertSamePseudoElement("before", records[1].removedNodes[0], originalBeforeElement);
observer.disconnect();
testAddedDueToDisplay();
});
SpecialPowers.observeMutationEvents(m, parent, true);
parent.style.display = "none";
}
function testAddedDueToDisplay() {
let parent = document.getElementById("pseudo");
var m = new MutationObserver(function(records, observer) {
is(records.length, 2, "Correct number of records");
is(records[0].type, "nativeAnonymousChildList", "Correct record type (1)");
is(records[1].type, "nativeAnonymousChildList", "Correct record type (2)");
is(records[0].target, parent, "Correct target (1)");
is(records[1].target, parent, "Correct target (2)");
is(records[0].addedNodes.length, 1, "Should have got addedNodes");
assertSamePseudoElement("before", records[0].addedNodes[0], getFirstChild(parent));
is(records[0].removedNodes.length, 0, "Shouldn't have got removedNodes");
is(records[1].addedNodes.length, 1, "Should have got addedNodes");
assertSamePseudoElement("after", records[1].addedNodes[0], getLastChild(parent));
is(records[1].removedNodes.length, 0, "Shouldn't have got removedNodes");
observer.disconnect();
testDifferentTargetNoSubtree();
});
SpecialPowers.observeMutationEvents(m, parent, true);
parent.style.display = "block";
}
function testDifferentTargetNoSubtree() {
let parent = document.getElementById("pseudo");
var m = new MutationObserver(function(records, observer) {
ok(false,
"No mutation should fire when observing on a parent without subtree option.");
});
SpecialPowers.observeMutationEvents(m, document, true);
parent.style.display = "none";
// Wait for the actual mutation to come through, making sure that
// the original observer never fires.
var m2 = new MutationObserver(function(records, observer) {
ok(!getFirstChild(parent), "Pseudo element has been removed, but no mutation");
ok(!getLastChild(parent), "Pseudo element has been removed, but no mutation");
observer.disconnect();
testSubtree();
});
SpecialPowers.observeMutationEvents(m2, parent, true);
}
function testSubtree() {
let parent = document.getElementById("pseudo");
var m = new MutationObserver(function(records, observer) {
is(records.length, 2, "Correct number of records");
is(records[0].type, "nativeAnonymousChildList", "Correct record type (1)");
is(records[1].type, "nativeAnonymousChildList", "Correct record type (2)");
is(records[0].target, parent, "Correct target (1)");
is(records[1].target, parent, "Correct target (2)");
is(records[0].addedNodes.length, 1, "Should have got addedNodes");
assertSamePseudoElement("before", records[0].addedNodes[0], getFirstChild(parent));
is(records[0].removedNodes.length, 0, "Shouldn't have got removedNodes");
is(records[1].addedNodes.length, 1, "Should have got addedNodes");
assertSamePseudoElement("after", records[1].addedNodes[0], getLastChild(parent));
is(records[1].removedNodes.length, 0, "Shouldn't have got removedNodes");
observer.disconnect();
testDictionaryWithoutChromePriv();
});
SpecialPowers.observeMutationEvents(m, document, true, true);
parent.style.display = "block";
}
function testDictionaryWithoutChromePriv()
{
var m = new MutationObserver(function() {});
try {
m.observe(document, { childList: true, get nativeAnonymousChildList() { throw "Foo1"; } } );
ok(true, "Shouldn't throw!");
} catch(ex) {
ok(false, "Did throw " + ex);
}
try {
m.observe(document, { childList: true, get animations() { throw "Foo2"; } } );
ok(true, "Shouldn't throw!");
} catch(ex) {
ok(false, "Did throw " + ex);
}
SimpleTest.finish();
}
</script>
</pre>
</body>
</html>