phantomjs testrunner.js

//  details: http://joseoncode.com/2011/08/08/javascript-continuous-testing-with-qunit-phantomjs-and-powershell/ 

/**
 * Wait until the test condition is true or a timeout occurs. Useful for waiting
 * on a server response or for a ui change (fadeIn, etc.) to occur.
 *
 * @param testFx javascript condition that evaluates to a boolean,
 * it can be passed in as a string (e.g.: "1 == 1" or "$('#bar').is(':visible')" or
 * as a callback function.
 * @param onReady what to do when testFx condition is fulfilled,
 * it can be passed in as a string (e.g.: "1 == 1" or "$('#bar').is(':visible')" or
 * as a callback function.
 * @param timeOutMillis the max amount of time to wait. If not specified, 3 sec is used.
 */
function waitFor(testFx, onReady, timeOutMillis) {
  var maxtimeOutMillis = timeOutMillis ? timeOutMillis : 3001, //< Default Max Timout is 3s
    start = new Date().getTime(),
    condition = false,
    interval = setInterval(function() {
      if ( (new Date().getTime() - start < maxtimeOutMillis) && !condition ) {
        // If not time-out yet and condition not yet fulfilled
        condition = (typeof(testFx) === "string" ? eval(testFx) : testFx()); //< defensive code
      } else {
        if(!condition) {
          // If condition still not fulfilled (timeout but condition is 'false')
          console.log("'waitFor()' timeout");
          phantom.exit(1);
        } else {
          // Condition fulfilled (timeout and/or condition is 'true')
          //console.log("'waitFor()' finished in " + (new Date().getTime() - start) + "ms.");
          typeof(onReady) === "string" ? eval(onReady) : onReady(); //< Do what it's supposed to do once the condition is fulfilled
          clearInterval(interval); //< Stop this interval
        }
      }
    }, 100); //< repeat check every 250ms
};


if (phantom.args.length === 0 || phantom.args.length > 2) {
  console.log('Usage: run-qunit.js URL');
  phantom.exit(1);
}

var page = new WebPage();

// Route "console.log()" calls from within the Page context to the main Phantom context (i.e. current "this")
page.onConsoleMessage = function(msg) {
  console.log(msg);
};

page.open(phantom.args[0], function(status){
  if (status !== "success") {
    console.log("Unable to access network");
    phantom.exit(1);
  } else {
    waitFor(function(){
      return page.evaluate(function(){
        var el = document.getElementById('qunit-testresult');
        if (el && el.innerText.match('completed')) {
          return true;
        }
        return false;
      });
    }, function(){
      var failedNum = page.evaluate(function(){

        var tests = document.getElementById("qunit-tests").childNodes;
        console.log( '' );
        for(var i in tests){
          var text = tests[i].innerText, failed, titlePrefix = '';
          if(text !== undefined){
            failed =  tests[i].getElementsByClassName('fail').length;
            if( failed ){
              titlePrefix = ' X  '
            }
            console.log( titlePrefix + tests[i].getElementsByTagName('strong')[0].innerText );

            if( failed ){
              console.log( Array( Math.min( 75 ) ).join("=") );
              var results = tests[i].getElementsByTagName('li');
              for( var r = 0, len = results.length; r < len; r++ ){
                var prefix = '[ ] ';
                if( results[r].className == 'fail' ){ prefix = '[x] '; }
                console.log( prefix + results[r].innerText);
              }
              console.log('');
            }

          }

        }
        console.log('');

        var el = document.getElementById('qunit-testresult');
        console.log(el.innerText);

        try {
          return el.getElementsByClassName('fail')[0].innerHTML;
        } catch (e) { }

        return 10000;
      });

      phantom.exit((parseInt(failedNum, 10) > 0) ? 1 : 0);
    });
  }
});