1.1 --- /dev/null Thu Jan 01 00:00:00 1970 +0000
1.2 +++ b/toolkit/devtools/server/tests/mochitest/test_inspector-retain.html Wed Dec 31 06:09:35 2014 +0100
1.3 @@ -0,0 +1,183 @@
1.4 +<!DOCTYPE HTML>
1.5 +<html>
1.6 +<!--
1.7 +https://bugzilla.mozilla.org/show_bug.cgi?id=
1.8 +-->
1.9 +<head>
1.10 + <meta charset="utf-8">
1.11 + <title>Test for Bug </title>
1.12 +
1.13 + <script type="application/javascript" src="chrome://mochikit/content/tests/SimpleTest/SimpleTest.js"></script>
1.14 + <link rel="stylesheet" type="text/css" href="chrome://mochikit/content/tests/SimpleTest/test.css">
1.15 + <script type="application/javascript;version=1.8" src="inspector-helpers.js"></script>
1.16 + <script type="application/javascript;version=1.8">
1.17 +Components.utils.import("resource://gre/modules/devtools/Loader.jsm");
1.18 +const {Promise: promise} = Components.utils.import("resource://gre/modules/Promise.jsm", {});
1.19 +
1.20 +const inspector = devtools.require("devtools/server/actors/inspector");
1.21 +
1.22 +window.onload = function() {
1.23 + SimpleTest.waitForExplicitFinish();
1.24 + runNextTest();
1.25 +}
1.26 +
1.27 +var gWalker = null;
1.28 +var gClient = null;
1.29 +var gInspectee = null;
1.30 +
1.31 +function assertOwnership() {
1.32 + return assertOwnershipTrees(gWalker);
1.33 +}
1.34 +
1.35 +addTest(function setup() {
1.36 + let url = document.getElementById("inspectorContent").href;
1.37 + attachURL(url, function(err, client, tab, doc) {
1.38 + gInspectee = doc;
1.39 + let {InspectorFront} = devtools.require("devtools/server/actors/inspector");
1.40 + let inspector = InspectorFront(client, tab);
1.41 + promiseDone(inspector.getWalker().then(walker => {
1.42 + ok(walker, "getWalker() should return an actor.");
1.43 + gClient = client;
1.44 + gWalker = walker;
1.45 + }).then(runNextTest));
1.46 + });
1.47 +});
1.48 +
1.49 +// Retain a node, and a second-order child (in another document, for kicks)
1.50 +// Release the parent of the top item, which should cause one retained orphan.
1.51 +
1.52 +// Then unretain the top node, which should retain the orphan.
1.53 +
1.54 +// Then change the source of the iframe, which should kill that orphan.
1.55 +
1.56 +addTest(function testRetain() {
1.57 + let originalOwnershipSize = 0;
1.58 + let bodyFront = null;
1.59 + let frameFront = null;
1.60 + let childListFront = null;
1.61 + // Get the toplevel body element and retain it.
1.62 + promiseDone(gWalker.querySelector(gWalker.rootNode, "body").then(front => {
1.63 + bodyFront = front;
1.64 + return gWalker.retainNode(bodyFront);
1.65 + }).then(() => {
1.66 + // Get an element in the child frame and retain it.
1.67 + return gWalker.querySelector(gWalker.rootNode, "#childFrame");
1.68 + }).then(frame => {
1.69 + frameFront = frame;
1.70 + return gWalker.children(frame, { maxNodes: 1 }).then(children => {
1.71 + return children.nodes[0];
1.72 + });
1.73 + }).then(childDoc => {
1.74 + return gWalker.querySelector(childDoc, "#longlist");
1.75 + }).then(list => {
1.76 + childListFront = list;
1.77 + originalOwnershipSize = assertOwnership();
1.78 + // and rtain it.
1.79 + return gWalker.retainNode(childListFront);
1.80 + }).then(() => {
1.81 + // OK, try releasing the parent of the first retained.
1.82 + return gWalker.releaseNode(bodyFront.parentNode());
1.83 + }).then(() => {
1.84 + let size = assertOwnership();
1.85 + let clientTree = clientOwnershipTree(gWalker);
1.86 +
1.87 + // That request should have freed the parent of the first retained
1.88 + // but moved the rest into the retained orphaned tree.
1.89 + is(ownershipTreeSize(clientTree.root) + ownershipTreeSize(clientTree.retained[0]) + 1,
1.90 + originalOwnershipSize,
1.91 + "Should have only lost one item overall.");
1.92 + is(gWalker._retainedOrphans.size, 1, "Should have retained one orphan");
1.93 + ok(gWalker._retainedOrphans.has(bodyFront), "Should have retained the expected node.");
1.94 + }).then(() => {
1.95 + // Unretain the body, which should promote the childListFront to a retained orphan.
1.96 + return gWalker.unretainNode(bodyFront);
1.97 + }).then(() => {
1.98 + assertOwnership();
1.99 + let clientTree = clientOwnershipTree(gWalker);
1.100 +
1.101 + is(gWalker._retainedOrphans.size, 1, "Should still only have one retained orphan.");
1.102 + ok(!gWalker._retainedOrphans.has(bodyFront), "Should have dropped the body node.")
1.103 + ok(gWalker._retainedOrphans.has(childListFront), "Should have retained the child node.")
1.104 + }).then(() => {
1.105 + // Change the source of the iframe, which should kill the retained orphan.
1.106 + gInspectee.querySelector("#childFrame").src = "data:text/html,<html>new child</html>";
1.107 + return waitForMutation(gWalker, isUnretained);
1.108 + }).then(mutations => {
1.109 + assertOwnership();
1.110 + let clientTree = clientOwnershipTree(gWalker);
1.111 + is(gWalker._retainedOrphans.size, 0, "Should have no more retained orphans.");
1.112 +
1.113 + }).then(runNextTest));
1.114 +});
1.115 +
1.116 +// Get a hold of a node, remove it from the doc and retain it at the same time.
1.117 +// We should always win that race (even though the mutation happens before the
1.118 +// retain request), because we haven't issued `getMutations` yet.
1.119 +addTest(function testWinRace() {
1.120 + let front = null;
1.121 + promiseDone(gWalker.querySelector(gWalker.rootNode, "#a").then(node => {
1.122 + front = node;
1.123 + let contentNode = gInspectee.querySelector("#a");
1.124 + contentNode.parentNode.removeChild(contentNode);
1.125 + // Now wait for that mutation and retain response to come in.
1.126 + return promise.all([
1.127 + gWalker.retainNode(front),
1.128 + waitForMutation(gWalker, isChildList)
1.129 + ]);
1.130 + }).then(() => {
1.131 + assertOwnership();
1.132 + let clientTree = clientOwnershipTree(gWalker);
1.133 + is(gWalker._retainedOrphans.size, 1, "Should have a retained orphan.");
1.134 + ok(gWalker._retainedOrphans.has(front), "Should have retained our expected node.");
1.135 + return gWalker.unretainNode(front);
1.136 + }).then(() => {
1.137 + // Make sure we're clear for the next test.
1.138 + assertOwnership();
1.139 + let clientTree = clientOwnershipTree(gWalker);
1.140 + is(gWalker._retainedOrphans.size, 0, "Should have no more retained orphans.");
1.141 + }).then(runNextTest));
1.142 +});
1.143 +
1.144 +// Same as above, but issue the request right after the 'new-mutations' event, so that
1.145 +// we *lose* the race.
1.146 +addTest(function testLoseRace() {
1.147 + let front = null;
1.148 + promiseDone(gWalker.querySelector(gWalker.rootNode, "#z").then(node => {
1.149 + front = node;
1.150 + gInspectee.querySelector("#z").parentNode = null;
1.151 + let contentNode = gInspectee.querySelector("#a");
1.152 + contentNode.parentNode.removeChild(contentNode);
1.153 + return promiseOnce(gWalker, "new-mutations");
1.154 + }).then(() => {
1.155 + // Verify that we have an outstanding request (no good way to tell that it's a
1.156 + // getMutations request, but there's nothing else it would be).
1.157 + is(gWalker._requests.length, 1, "Should have an outstanding request.");
1.158 + return gWalker.retainNode(front)
1.159 + }).then(() => { ok(false, "Request should not have succeeded!"); },
1.160 + (err) => {
1.161 + ok(err, "noSuchActor", "Should have lost the race.");
1.162 + let clientTree = clientOwnershipTree(gWalker);
1.163 + is(gWalker._retainedOrphans.size, 0, "Should have no more retained orphans.");
1.164 + // Don't re-throw the error.
1.165 + }).then(runNextTest));
1.166 +});
1.167 +
1.168 +addTest(function cleanup() {
1.169 + delete gWalker;
1.170 + delete gClient;
1.171 + runNextTest();
1.172 +});
1.173 +
1.174 + </script>
1.175 +</head>
1.176 +<body>
1.177 +<a target="_blank" href="https://bugzilla.mozilla.org/show_bug.cgi?id=">Mozilla Bug </a>
1.178 +<a id="inspectorContent" target="_blank" href="inspector-traversal-data.html">Test Document</a>
1.179 +<p id="display"></p>
1.180 +<div id="content" style="display: none">
1.181 +
1.182 +</div>
1.183 +<pre id="test">
1.184 +</pre>
1.185 +</body>
1.186 +</html>
