Frame-this-12.js (1342B)
1 // Check evalInFrame("this") always returns the same object for a given frame. 2 // Primitive this-values should not be boxed multiple times. 3 4 var g = newGlobal({newCompartment: true}); 5 var dbg = new Debugger(g); 6 var framesEntered = 0; 7 var framesPopped = 0; 8 var numSteps = 0; 9 dbg.onEnterFrame = function (frame) { 10 if (frame.type === 'eval') 11 return; 12 framesEntered++; 13 14 var frameThis = frame.eval('this').return; 15 16 frame.onPop = function() { 17 framesPopped++; 18 assertEq(frame.eval('this').return, frameThis); 19 }; 20 21 frame.onStep = function() { 22 numSteps++; 23 assertEq(frame.eval('this').return, frameThis); 24 } 25 26 g.gotThis = frameThis.unsafeDereference(); 27 assertEq(frame.this, frameThis); 28 }; 29 30 g.eval("function nonstrictfun() { return this; }"); 31 g.eval("nonstrictfun.call(Math); assertEq(gotThis, Math);"); 32 g.eval("nonstrictfun.call(true); assertEq(gotThis.valueOf(), true);"); 33 g.eval("nonstrictfun.call(); assertEq(gotThis, this);"); 34 35 g.eval("function nonstrictfunNoThis() { return 1; }"); 36 g.eval("nonstrictfunNoThis.call(Math); assertEq(gotThis, Math);"); 37 g.eval("nonstrictfunNoThis.call(true); assertEq(gotThis.valueOf(), true);"); 38 g.eval("nonstrictfunNoThis.call(); assertEq(gotThis, this);"); 39 40 assertEq(framesEntered, 6); 41 assertEq(framesPopped, 6); 42 assertEq(numSteps > 15, true);