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/debug/Object-preventExtensions-01.js	Wed Dec 31 06:09:35 2014 +0100
     1.3 @@ -0,0 +1,17 @@
     1.4 +// Basic preventExtensions test.
     1.5 +
     1.6 +var g = newGlobal();
     1.7 +var obj = g.eval("({x: 1})");
     1.8 +assertEq(g.Object.isExtensible(obj), true);
     1.9 +
    1.10 +var dbg = new Debugger;
    1.11 +var gw = dbg.addDebuggee(g);
    1.12 +var objw = gw.makeDebuggeeValue(obj);
    1.13 +assertEq(objw.isExtensible(), true);
    1.14 +
    1.15 +assertEq(objw.preventExtensions(), undefined);
    1.16 +assertEq(g.Object.isExtensible(obj), false);
    1.17 +assertEq(objw.isExtensible(), false);
    1.18 +
    1.19 +// Calling preventExtensions again has no effect.
    1.20 +assertEq(objw.preventExtensions(), undefined);