fune/browser/components/sessionstore/test/browser_687710.js
2017-10-15 20:50:39 +01:00

48 lines
1.2 KiB
JavaScript

/* Any copyright is dedicated to the Public Domain.
http://creativecommons.org/publicdomain/zero/1.0/ */
// Test that sessionrestore handles cycles in the shentry graph properly.
//
// These cycles shouldn't be there in the first place, but they cause hangs
// when they mysteriously appear (bug 687710). Docshell code assumes this
// graph is a tree and tires to walk to the root. But if there's a cycle,
// there is no root, and we loop forever.
var stateBackup = ss.getBrowserState();
var state = {windows: [{tabs: [{entries: [
{
docIdentifier: 1,
url: "http://example.com",
triggeringPrincipal_base64,
children: [
{
docIdentifier: 2,
url: "http://example.com",
triggeringPrincipal_base64,
}
]
},
{
docIdentifier: 2,
url: "http://example.com",
triggeringPrincipal_base64,
children: [
{
docIdentifier: 1,
url: "http://example.com",
triggeringPrincipal_base64,
}
]
}
]}]}]};
function test() {
registerCleanupFunction(function() {
ss.setBrowserState(stateBackup);
});
/* This test fails by hanging. */
ss.setBrowserState(JSON.stringify(state));
ok(true, "Didn't hang!");
}