Debugger-onNewGlobalObject-01.js

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// Debugger.prototype.onNewGlobalObject surfaces.

load(libdir + 'asserts.js');

var dbg = new Debugger;

function f() { }

function g() { }

assertEq(Object.getOwnPropertyDescriptor(dbg, 'onNewGlobalObject'), undefined);

var d = Object.getOwnPropertyDescriptor(Object.getPrototypeOf(dbg), 'onNewGlobalObject');

assertEq(d.enumerable, false);

assertEq(d.configurable, true);

assertEq(typeof d.get, "function");

assertEq(typeof d.set, "function");

assertEq(dbg.onNewGlobalObject, undefined);

assertThrowsInstanceOf(function () { dbg.onNewGlobalObject = ''; }, TypeError);

assertEq(dbg.onNewGlobalObject, undefined);

assertThrowsInstanceOf(function () { dbg.onNewGlobalObject = false; }, TypeError);

assertEq(dbg.onNewGlobalObject, undefined);

assertThrowsInstanceOf(function () { dbg.onNewGlobalObject = 0; }, TypeError);

assertEq(dbg.onNewGlobalObject, undefined);

assertThrowsInstanceOf(function () { dbg.onNewGlobalObject = Math.PI; }, TypeError);

assertEq(dbg.onNewGlobalObject, undefined);

assertThrowsInstanceOf(function () { dbg.onNewGlobalObject = null; }, TypeError);

assertEq(dbg.onNewGlobalObject, undefined);

assertThrowsInstanceOf(function () { dbg.onNewGlobalObject = {}; }, TypeError);

assertEq(dbg.onNewGlobalObject, undefined);

// But any function, even a useless one, is okay. How fair is that?

dbg.onNewGlobalObject = f;

assertEq(dbg.onNewGlobalObject, f);

dbg.onNewGlobalObject = undefined;

assertEq(dbg.onNewGlobalObject, undefined);

var dbg2 = new Debugger;

assertEq(dbg.onNewGlobalObject, undefined);

assertEq(dbg2.onNewGlobalObject, undefined);

dbg.onNewGlobalObject = f;

assertEq(dbg.onNewGlobalObject, f);

assertEq(dbg2.onNewGlobalObject, undefined);

dbg2.onNewGlobalObject = g;

assertEq(dbg.onNewGlobalObject, f);

assertEq(dbg2.onNewGlobalObject, g);

dbg.onNewGlobalObject = undefined;

assertEq(dbg.onNewGlobalObject, undefined);

assertEq(dbg2.onNewGlobalObject, g);

// You shouldn't be able to apply the accessor to the prototype.

assertThrowsInstanceOf(function () {

                         Debugger.prototype.onNewGlobalObject = function () { };

                       }, TypeError);