Object-makeDebuggeeValue-01.js

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// Debugger.Object.prototype.makeDebuggeeValue creates only one

// Debugger.Object instance for each debuggee object.

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

var dbg = new Debugger();

var gw = dbg.addDebuggee(g);

g.eval("var x = { 'now playing': 'Joy Division' };");

g.eval("var y = { 'mood': 'bleak' };");

wx = gw.makeDebuggeeValue(g.x);

assertEq(wx, gw.makeDebuggeeValue(g.x));

assertEq(wx === g.x, false);

assertEq("now playing" in wx, false);

assertEq(wx.getOwnPropertyNames().indexOf("now playing"), 0);

wx.commentary = "deconstruction";

assertEq("deconstruction" in g.x, false);

wy = gw.makeDebuggeeValue(g.y);

assertEq(wy === wx, false);

wy.commentary = "reconstruction";

assertEq(wx.commentary, "deconstruction");

// Separate debuggers get separate Debugger.Object instances, but both

// instances' referents are the same underlying object.

var dbg2 = new Debugger();

var gw2 = dbg2.addDebuggee(g);

w2x = gw2.makeDebuggeeValue(g.x);

assertEq(wx === w2x, false);

w2x.defineProperty("breadcrumb", { value: "pumpernickel" });

assertEq(wx.getOwnPropertyDescriptor("breadcrumb").value, "pumpernickel");

// Non-objects are already debuggee values.

assertEq(gw.makeDebuggeeValue("foonting turlingdromes"), "foonting turlingdromes");

assertEq(gw.makeDebuggeeValue(true), true);

assertEq(gw.makeDebuggeeValue(false), false);

assertEq(gw.makeDebuggeeValue(null), null);

assertEq(gw.makeDebuggeeValue(1729), 1729);

assertEq(gw.makeDebuggeeValue(Math.PI), Math.PI);

assertEq(gw.makeDebuggeeValue(undefined), undefined);

var s = g.eval("Symbol('Stavromula Beta')");

assertEq(gw.makeDebuggeeValue(s), s);