The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/browser/components/sessionstore/test/browser_687710.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,44 @@
     1.4 +/* Any copyright is dedicated to the Public Domain.
     1.5 +   http://creativecommons.org/publicdomain/zero/1.0/ */
     1.6 +
     1.7 +// Test that sessionrestore handles cycles in the shentry graph properly.
     1.8 +//
     1.9 +// These cycles shouldn't be there in the first place, but they cause hangs
    1.10 +// when they mysteriously appear (bug 687710).  Docshell code assumes this
    1.11 +// graph is a tree and tires to walk to the root.  But if there's a cycle,
    1.12 +// there is no root, and we loop forever.
    1.13 +
    1.14 +let stateBackup = ss.getBrowserState();
    1.15 +
    1.16 +let state = {windows:[{tabs:[{entries:[
    1.17 +  {
    1.18 +    docIdentifier: 1,
    1.19 +    url: "http://example.com",
    1.20 +    children: [
    1.21 +      {
    1.22 +        docIdentifier: 2,
    1.23 +        url: "http://example.com"
    1.24 +      }
    1.25 +    ]
    1.26 +  },
    1.27 +  {
    1.28 +    docIdentifier: 2,
    1.29 +    url: "http://example.com",
    1.30 +    children: [
    1.31 +      {
    1.32 +        docIdentifier: 1,
    1.33 +        url: "http://example.com"
    1.34 +      }
    1.35 +    ]
    1.36 +  }
    1.37 +]}]}]}
    1.38 +
    1.39 +function test() {
    1.40 +  registerCleanupFunction(function () {
    1.41 +    ss.setBrowserState(stateBackup);
    1.42 +  });
    1.43 +
    1.44 +  /* This test fails by hanging. */
    1.45 +  ss.setBrowserState(JSON.stringify(state));
    1.46 +  ok(true, "Didn't hang!");
    1.47 +}