gistfile1.js

/**
 * This is the simplest form of the use case. This fails because the first start()'s async bit kicks in before
 * the second call to start() even though the semaphore is at 1 it will call process().
 */
test("test synchronous calls to stop", 2, function() {
    stop();
    setTimeout(function(){
        ok(true, 'first');
        start();
        stop();
        setTimeout(function(){
            ok(true, 'second');
            start();
        }, 100);
    }, 100);
});


/**
 * This is a more elaborate test case involving a utility function that can't be nested because of the
 * synchronous stop() problem.
 */
QUtil{
	waitForCondition : function(options) {
		var intervalId,
			startTime = new Date();

		options = jQuery.extend({
			maxWait: 500,
			pollPeriod: 50,
			doAfterTimeout: function(){
				ok(false, "waitForCondition timed out with no doAfterTimeout function to call");
			},
			doAfterReady: function(){},
			condition: function(){ok(false, "no condition passed");}
		}, options);
		
		var intervalTrigger = function() {
			if (options.condition()) {
				start();
				clearInterval(intervalId);
				options.doAfterReady();
			} else if (((new Date()) - startTime) > options.maxWait) {
				start();
				clearInterval(intervalId);
				options.doAfterTimeout();
			}
		};
		stop();
		intervalId = setInterval(intervalTrigger, options.pollPeriod);
	}
}

test("launch button launches rocket", 2, function() {
	$("#myAwesomeButton").click(); //anything that triggers an async event
	QUtil.waitForCondition({
		condition: function() {
			return true; //check something that async event changes
		},
		doAfterReady: function() {
			ok(true, "async event success");
			$("#myAwesomeButton").click(); //anything that triggers an async event
			QUtil.waitForCondition({
				condition: function() {
					return true; //check something that second async event changes
				},
				doAfterReady: function() {
					ok(true, "second async event success");
				},
				doAfterTimeout: function(){
					ok(false, "second async event failed");
				}
			});
		},
		doAfterTimeout: function(){
			ok(false, "async event not successful");
		}
	});
});