<!DOCTYPE HTML> <html> <!-- https://bugzilla.mozilla.org/show_bug.cgi?id= --> <head> <meta charset="utf-8"> <title>Test for Bug </title> <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script> <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css"> <script type="application/javascript;version=1.8" src="inspector-helpers.js"></script> <script type="application/javascript;version=1.8"> const inspector = require("devtools/shared/fronts/inspector"); window.onload = function() { SimpleTest.waitForExplicitFinish(); runNextTest(); } var gWalker = null; var gClient = null; function assertOwnership() { return assertOwnershipTrees(gWalker); } addTest(function setup() { let url = document.getElementById("inspectorContent").href; attachURL(url, function(err, client, tab, doc) { let {InspectorFront} = require("devtools/shared/fronts/inspector"); let inspector = InspectorFront(client, tab); promiseDone(inspector.getWalker().then(walker => { ok(walker, "getWalker() should return an actor."); gClient = client; gWalker = walker; }).then(runNextTest)); }); }); addTest(function testReleaseSubtree() { let originalOwnershipSize = 0; let longlist = null; let firstChild = null; promiseDone(gWalker.querySelectorAll(gWalker.rootNode, "#longlist div").then(list => { // Make sure we have the 26 children of longlist in our ownership tree. is(list.length, 26, "Expect 26 div children."); // Make sure we've read in all those children and incorporated them in our ownership tree. return list.items(); }).then((items)=> { originalOwnershipSize = assertOwnership(); // Here is how the ownership tree is summed up: // #document 1 // <html> 1 // <body> 1 // <div id=longlist> 1 // <div id=a>a</div> 26*2 (each child plus it's singleTextChild) // ... // <div id=z>z</div> // ----- // 56 is(originalOwnershipSize, 56, "Correct number of items in ownership tree"); firstChild = items[0].actorID; }).then(() => { // Now get the longlist and release it from the ownership tree. return gWalker.querySelector(gWalker.rootNode, "#longlist"); }).then(node => { longlist = node.actorID; return gWalker.releaseNode(node); }).then(() => { // Our ownership size should now be 53 fewer (we forgot about #longlist + 26 children + 26 singleTextChild nodes) let newOwnershipSize = assertOwnership(); is(newOwnershipSize, originalOwnershipSize - 53, "Ownership tree should be lower"); // Now verify that some nodes have gone away return checkMissing(gClient, longlist); }).then(() => { return checkMissing(gClient, firstChild); }).then(runNextTest)); }); addTest(function cleanup() { delete gWalker; delete gClient; runNextTest(); }); </script> </head> <body> <a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=">Mozilla Bug </a> <a id="inspectorContent" target="_blank" href="inspector-traversal-data.html">Test Document</a> <p id="display"></p> <div id="content" style="display: none"> </div> <pre id="test"> </pre> </body> </html>