The Tor Browser / file diff

     1.1 --- /dev/null	Thu Jan 01 00:00:00 1970 +0000
     1.2 +++ b/js/src/jit-test/tests/proxy/testDirectProxyPreventExtensions4.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,10 @@
     1.4 +load(libdir + "asserts.js");
     1.5 +
     1.6 +// Throw a TypeError if the object refuses to be made non-extensible
     1.7 +assertThrowsInstanceOf(function () {
     1.8 +    Object.preventExtensions(new Proxy({}, {
     1.9 +        preventExtensions: function () {
    1.10 +            return false;
    1.11 +        }
    1.12 +    }));
    1.13 +}, TypeError);