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Does anyone here use a Javascript Code Coverage tool for testing your code?

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Aug 13.2012

I’m looking for a javascript code coverage tool that lists the lines of javascript code executed during a user session. I’ve found some, but requires a Windows machine.

Ideally, the coverage tool can be installed as a Firebug plugin to Firefox. Also, I installed the plugin, “Code Coverage v2 for Firebug”, but unfortunately, that no longer works on latest versions of Firefox.

Any ideas would be much appreciated.

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@rnd_meAug 13.2012 — firebug's profile tool does that, but it sounds like you want something deploy-able.

you can write a script that wraps all your functions with a wrapper logging function, but that might be over-kill for what you need. try just adding lots of console.log() statements inside the functions you need to log.

if you want to auto-log, there are some simple options.

here's one that i whipped up in firebug:

[CODE]
function addWrapper(fn){
window[fn.name]=function(){
var args=[].slice.call(arguments);
console.log(+new Date+"t"+fn.name +"["+args+"]");
return fn.apply(this, args);

};
}

//usage:

//std functions:
function even(a){ return a%2==0;}
function odd(a){ return a%2!==0;}

//wrapping thos functions:
[even, odd].map(addWrapper);


//running the newly wrapped functions to produce console logs:
[1,2,3,4,5].filter(odd);
[/CODE]
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@anthoangauthorAug 13.2012 — rnd_me,

Thanks. The profiler will be very helpful.


I was looking into stepping-through a javascript framework. More specifically, Sencha ExtJS code - which has over 40,000+ lines of code and it would be crazy to put console.log statements all over the place.
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