The Tor Browser: browser/components/sessionstore/test/browser

Incorporate requested changes from Mozilla in review:
https://bugzilla.mozilla.org/show_bug.cgi?id=1123480#c6

     1 /* Any copyright is dedicated to the Public Domain.

     2    http://creativecommons.org/publicdomain/zero/1.0/ */

     4 // Test that sessionrestore handles cycles in the shentry graph properly.

     5 //

     6 // These cycles shouldn't be there in the first place, but they cause hangs

     7 // when they mysteriously appear (bug 687710).  Docshell code assumes this

     8 // graph is a tree and tires to walk to the root.  But if there's a cycle,

     9 // there is no root, and we loop forever.

    11 let stateBackup = ss.getBrowserState();

    13 let state = {windows:[{tabs:[{entries:[

    14   {

    15     docIdentifier: 1,

    16     url: "http://example.com",

    17     children: [

    18       {

    19         docIdentifier: 2,

    20         url: "http://example.com"

    21       }

    22     ]

    23   },

    24   {

    25     docIdentifier: 2,

    26     url: "http://example.com",

    27     children: [

    28       {

    29         docIdentifier: 1,

    30         url: "http://example.com"

    31       }

    32     ]

    33   }

    34 ]}]}]}

    36 function test() {

    37   registerCleanupFunction(function () {

    38     ss.setBrowserState(stateBackup);

    39   });

    41   /* This test fails by hanging. */

    42   ss.setBrowserState(JSON.stringify(state));

    43   ok(true, "Didn't hang!");

    44 }

The Tor Browser / file revision