The Tor Browser / file revision

 // Any copyright is dedicated to the Public Domain.

 // http://creativecommons.org/licenses/publicdomain/

 var a = 9;

 var global = this;

 function test() {

     var a = 0;

     // direct eval sees local a

     assertEq(eval('a+1'), 1);

     assertEq(eval('eval("a+1")'), 1);

     // indirect: using a name other than 'eval'

     var foo = eval;

     assertEq(foo('a+1'), 10);

     assertEq(eval('foo("a+1")'), 10); // outer eval is direct, inner foo("a+1") is indirect

     // indirect: qualified method call

     assertEq(this.eval("a+1"), 10);

     assertEq(global.eval("a+1"), 10);

     var obj = {foo: eval, eval: eval};

     assertEq(obj.foo('a+1'), 10);

     assertEq(obj.eval('a+1'), 10);

     var name = "eval";

     assertEq(obj[name]('a+1'), 10);

     assertEq([eval][0]('a+1'), 10);

     // indirect: not called from a CallExpression at all

     assertEq(eval.call(undefined, 'a+1'), 10);

     assertEq(eval.call(global, 'a+1'), 10);

     assertEq(eval.apply(undefined, ['a+1']), 10);

     assertEq(eval.apply(global, ['a+1']), 10);

     assertEq(['a+1'].map(eval)[0], 10);

 }

 test();

 reportCompare(0, 0);