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<?xml version="1.0"?>
<window id="396649Test"
width="600"
height="600"
onload="setTimeout(nextTest, 0);"
<script type="application/javascript" src="docshell_helpers.js" />
<script type="application/javascript"><![CDATA[
Services.prefs.setBoolPref("browser.navigation.requireUserInteraction", false);
// Define the generator-iterator for the tests.
var tests = testIterator();
// Maximum number of entries in the bfcache for this session history.
// This number is hardcoded in docshell code. In the test, we'll
// navigate through enough pages so that we hit one that's been
// evicted from the bfcache because it's farther from the current
// page than this number.
const MAX_BFCACHE_PAGES = 3;
////
// Execute the next test in the generator function.
//
function nextTest() {
tests.next();
}
////
// viewers should be evicted from bfcache when going back if more
// than MAX_BFCACHE_PAGES from the current index.
//
function* testIterator()
{
// Make sure bfcache is on.
enableBFCache(true);
// Load enough pages so that the first loaded is eviced from
// the bfcache, since it is greater the MAX_BFCACHE_PAGES from
// the current position in the session history. Verify all
// of the pages are initially stored in the bfcache when
// they're unloaded.
for (var i = 0; i <= MAX_BFCACHE_PAGES + 1; i++) {
let eventsToListenFor = ["pageshow"];
let expectedEvents = [ { type: "pageshow",
if (i > 0) {
eventsToListenFor.push("pagehide");
expectedEvents.unshift({ type: "pagehide",
}
doPageNavigation( {
uri: "data:text/html,<!DOCTYPE html><html>" +
"</title></head>" +
"<body>" +
"test page " + i +
"</body></html>",
eventsToListenFor,
expectedEvents,
onNavComplete: nextTest
} );
yield undefined;
}
// Go back to the first page, one page at a time. The first
// MAX_BFCACHE_PAGES pages loaded via back should come from the bfcache,
// the last should not, since it should have been evicted during the
// previous navigation sequence. Verify all pages are initially stored
// in the bfcache when they're unloaded.
for (i = MAX_BFCACHE_PAGES + 1; i > 0; i--) {
doPageNavigation( {
back: true,
eventsToListenFor: ["pageshow", "pagehide"],
expectedEvents: [ { type: "pagehide",
persisted: true },
{ type: "pageshow",
persisted: i > 1 } ],
onNavComplete: nextTest
} );
yield undefined;
}
// Traverse history forward now. Again, the first MAX_BFCACHE_PAGES
// pages should come from the bfcache, the last should not,
// since it should have been evicted during the backwards
// traversal above. Verify all pages are initially stored
// in the bfcache when they're unloaded.
for (i = 1; i <= MAX_BFCACHE_PAGES + 1; i++) {
doPageNavigation( {
forward: true,
eventsToListenFor: ["pageshow", "pagehide"],
expectedEvents: [ { type: "pagehide",
persisted: true },
{ type: "pageshow",
persisted: i < MAX_BFCACHE_PAGES + 1 } ],
onNavComplete: nextTest
} );
yield undefined;
}
Services.prefs.clearUserPref("browser.navigation.requireUserInteraction");
// Tell the framework the test is finished.
finish();
}
]]></script>
<browser type="content" primary="true" flex="1" id="content" remote="true" maychangeremoteness="true" />
</window>