Object-getOwnPropertyDescriptor-06.js

Enable keyboard shortcuts

// obj.getOwnPropertyDescriptor works when obj is a transparent cross-compartment wrapper.

var g1 = newGlobal({newCompartment: true});

var g2 = newGlobal({newCompartment: true});

g1.next = g2;

// This test is a little hard to follow, especially the !== assertions.

//

// Bottom line: the value of a property of g1 can only be an object in g1's

// compartment, so any Debugger.Objects obtained by calling

// g1obj.getOwnPropertyDescriptor should all have referents in g1's

// compartment.

var dbg = new Debugger;

var g1obj = dbg.addDebuggee(g1);

var g2obj = dbg.addDebuggee(g2);

var wobj = g1obj.getOwnPropertyDescriptor("next").value;

assertEq(wobj instanceof Debugger.Object, true);

assertEq(wobj !== g2obj, true);  // referents are in two different compartments

g2.x = "ok";

assertEq(wobj.getOwnPropertyDescriptor("x").value, "ok");

g1.g2min = g2.min = g2.Math.min;

g2.eval("Object.defineProperty(this, 'y', {get: min});");

assertEq(g2.y, Infinity);

var wmin = wobj.getOwnPropertyDescriptor("y").get;

assertEq(wmin !== g2obj.getOwnPropertyDescriptor("min").value, true);  // as above

assertEq(wmin, g1obj.getOwnPropertyDescriptor("g2min").value);