Frame-this-04.js - mozsearch

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// Debugger.Frame.prototype.this in functions, with object values

function classOf(obj) {

    return Object.prototype.toString.call(obj).match(/^\[object (.*)\]$/)[1];

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

var dbg = new Debugger(g);

var hits = 0;

dbg.onDebuggerStatement = function (frame) {

    hits++;

    assertEq(frame.this instanceof Debugger.Object, true);

    assertEq(frame.this.class, classOf(Object(g.v)));

};

g.eval("function f() { debugger; }");

g.eval("v = {}; f.call(v);");

g.eval("v.f = f; v.f();");

g.eval("v = new Date; f.call(v);");

g.eval("v.f = f; v.f();");

g.eval("v = []; f.call(v);");

g.eval("Object.prototype.f = f; v.f();");

g.eval("v = this; f();");

assertEq(hits, 7);