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+<!DOCTYPE HTML>
+<html>
+<!--
+https://bugzilla.mozilla.org/show_bug.cgi?id=580313
+-->
+<head>
+ <title>Test Prefetch (bug 580313)</title>
+ <script type="text/javascript" src="/tests/SimpleTest/SimpleTest.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=580313">Mozilla Bug 580313</a>
+<p id="display"></p>
+<div id="content" style="display: none">
+
+</div>
+<pre id="test">
+<script type="application/javascript">
+
+ SimpleTest.waitForExplicitFinish();
+
+ var prefetch = SpecialPowers.Cc["@mozilla.org/prefetch-service;1"].
+ getService(SpecialPowers.Ci.nsIPrefetchService);
+ var ios = SpecialPowers.Cc["@mozilla.org/network/io-service;1"].
+ getService(SpecialPowers.Ci.nsIIOService);
+
+ is(prefetch.hasMoreElements(), false, "No prefetches at the test start.");
+
+ var linkElem = document.createElement('link');
+ linkElem.rel = "prefetch";
+
+ // Href is empty.
+ document.head.appendChild(linkElem);
+ is(prefetch.hasMoreElements(), false,
+ "If href is not a valid uri, a prefetch has not been started.");
+
+ // Change uri of an existing link. Now it is a valid uri and
+ // a prefetch should start.
+ linkElem.href = "https://example.com/1";
+ is(prefetch.hasMoreElements(), true,
+ "Setting the href to a valid uri has started a new prefetch.");
+
+ // Removing a link, removes its prefetch.
+ document.head.removeChild(linkElem);
+ is(prefetch.hasMoreElements(), false,
+ "Removing the link has canceled the prefetch.");
+
+ // Add link again.
+ document.head.appendChild(linkElem);
+ is(prefetch.hasMoreElements(), true,
+ "Adding link again, has started the prefetch again.");
+
+ // Changing the href should cancel the current prefetch.
+ linkElem.href = "https://example.com/2";
+ is(prefetch.hasMoreElements(), true,
+ "Changing href, a new prefetch has been started.");
+ // To check if "https://example.com/1" prefetch has been canceled, we try to
+ // cancel it using PrefetService. Since the prefetch for
+ // "https://example.com/1" does not exist, the cancel will throw.
+ var cancelError = 0;
+ try {
+ var uri = ios.newURI("https://example.com/1", null, null);
+ prefetch.cancelPrefetchURI(uri, linkElem);
+ } catch(e) {
+ cancelError = 1;
+ }
+ is(cancelError, 1, "This prefetch has aleady been canceled");
+
+ // Now cancel the right uri.
+ cancelError = 0;
+ try {
+ var uri = ios.newURI("https://example.com/2", null, null);
+ prefetch.cancelPrefetchURI(uri, linkElem);
+ } catch(e) {
+ cancelError = 1;
+ }
+ is(cancelError, 0, "This prefetch has been canceled successfully");
+
+ is(prefetch.hasMoreElements(), false, "The prefetch has already been canceled.");
+
+ // Removing the link will do nothing regarding prefetch service.
+ document.head.removeChild(linkElem);
+
+ // Adding two links to the same uri and removing one will not remove the other.
+ document.head.appendChild(linkElem);
+ is(prefetch.hasMoreElements(), true,
+ "Added one prefetch for 'https://example.com/2'.");
+
+ var linkElem2 = document.createElement('link');
+ linkElem2.rel = "prefetch";
+ linkElem2.href = "https://example.com/2";
+ document.head.appendChild(linkElem2);
+ is(prefetch.hasMoreElements(), true,
+ "Added second prefetch for 'https://example.com/2'.");
+
+ // Remove first link element. This should not remove the prefetch.
+ document.head.removeChild(linkElem);
+ is(prefetch.hasMoreElements(), true,
+ "The prefetch for 'https://example.com/2' is still present.");
+
+ // Remove the second link element. This should remove the prefetch.
+ document.head.removeChild(linkElem2);
+ is(prefetch.hasMoreElements(), false,
+ "There is no prefetch.");
+
+ SimpleTest.finish();
+</script>
+</pre>
+</body>
+</html>