Adding upstream version 110.0.1.upstream/110.0.1 upstream

Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
author: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-07 09:22:09 +0000
committer: Daniel Baumann <daniel.baumann@progress-linux.org> 2024-04-07 09:22:09 +0000
commit: 43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree: 620249daf56c0258faa40cbdcf9cfba06de2a846 /dom/base/test/test_mutationobservers.html
parent: Initial commit. (diff)
download: firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz
firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip
1 files changed, 862 insertions, 0 deletions
diff --git a/dom/base/test/test_mutationobservers.html b/dom/base/test/test_mutationobservers.html
new file mode 100644
index 0000000000..69b27253db
--- /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 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>
author	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-07 09:22:09 +0000
committer	Daniel Baumann <daniel.baumann@progress-linux.org>	2024-04-07 09:22:09 +0000
commit	43a97878ce14b72f0981164f87f2e35e14151312 (patch)
tree	620249daf56c0258faa40cbdcf9cfba06de2a846 /dom/base/test/test_mutationobservers.html
parent	Initial commit. (diff)
download	firefox-43a97878ce14b72f0981164f87f2e35e14151312.tar.xz firefox-43a97878ce14b72f0981164f87f2e35e14151312.zip