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Diffstat (limited to 'dom/base/test/test_mutationobservers.html')
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diff --git a/dom/base/test/test_mutationobservers.html b/dom/base/test/test_mutationobservers.html new file mode 100644 index 0000000000..80e42713f7 --- /dev/null +++ b/dom/base/test/test_mutationobservers.html @@ -0,0 +1,862 @@ +<!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> |