Jasmine reporter to find slow running tests

gistfile1.js

SlowDescribeReporter.prototype = {

    threshold: 400,

    reportRunnerStarting: function(runner){
        var i, len, suites = runner.suites_, self = this;
        this.topLevels = {};

        for(i = 0, len = suites.length; i < len; i++){
            (function(exec){
                suites[i].execute = function(){
                    self.topLevels[this.id].start = new Date();
                    exec.apply(this, arguments);
                };
            }(suites[i].execute));

            this.topLevels[suites[i].id] = {
                start: null,
                stop: null
            }
        }
    },

    reportRunnerResults: function(runner){
    },


    resultsForSpecs: function(){
    },

    reportSuiteResults: function(suite){
        var start, stop, ms;
        if(this.topLevels[suite.id]){
            start = this.topLevels[suite.id].start;
            stop = this.topLevels[suite.id].stop = new Date();
            if(!start || !stop){
                console.log(suite.description, 'failed', start, stop);
            } else {
                ms = (stop.getTime() - start.getTime());
                if(ms > this.threshold){
                    console.log(suite.getFullName(), 'completed in ', ms / 1000, 'seconds (', ms, ' ms)');
                }
            }
        }
    },

    reportSpecStarting: function(spec){
    },

    reportSpecResults: function(spec){
    
    }
};

In case this was not clear this is a quick hack to find slow running describe blocks inside of your test suite.
There might be a better way to monitor the "start" of a suite but I could not find one easily so I simply override execute per suite and record the start time there.

You can use this to add it to your env (like a spec helper)

jasmine.getEnv().reporter.addReporter(new SlowDescribeReporter());

I wrote something simple to find the slowest running specs in Jasmine 2.3, might be useful to others: http://jipiboily.com/how-to-know-jasmine-specs-are-slow/