I am looking for a tool to functionally test my Yii/ Node.js web application. The first thing I looked into was Selenium. The app runs on a headless Ubuntu server so successfully setting up xvfb and run a test was really painfull and drove me to another tool.
The error I kept getting is:
Xlib: extension "RANDR" missing on display :0
The other tool was Casperjs along with Phantomjs . Aside from the 5 minute setting up, I wrote few tests and integrated all with Jenkins CI. I really believe there should be more tools like this one. So I feel I've earned something on the short term, but I'm afraid that on the long term I'll hit a dead end. Could you give me some feedback? Am I going the wrong road?
Another thing that's crossing my mind is to setup the Selenium RC and Jenkins on a Windows machine with all browsers set up. I think this will give my tests a better and more accurate perspective.
* I would also like to be able to do some parallel functional tests (interactions) since the website is socket-driven. Does Selenium handle that?
First off, don't use Selenium RC if you can avoid it, it's officially deprecated in favor of Selenium Webdriver (also known as Selenium 2).
About headlessness - Webdriver can be easily run on top of HtmlUnit and also PhantomJS - both should work right away.
If you want to run the tests on actual browsers, people have been successful in running that on headless systems, too, but as you said, it's a pain. Instead, you can run the tests remotely on a different machines with your headless server commanding them all.
Related
I am getting ready to start a new automation project and have done some reading on Cypress as a Selenium alternative. Given that Cypress apparently runs directly in the browser as opposed to Selenium's approach, is it difficult to perform test steps with Cypress tests that fall outside the browser such as communicating with a data store, interacting with services and interacting with product infrastructure such as remote file systems? With my limited exposure to Cypress, I have only seen browser tests so I was hoping someone could shed some light on this.
When it comes to automated testing for web applications, there are two main contenders: Selenium and Cypress. Both have their pros and cons, but which one is the best?
Selenium has been around for much longer than Cypress and is therefore more widely used. It is also more flexible, allowing for tests to be written in a variety of programming languages. However, Selenium can be slow and unreliable, and it is not as easy to use as Cypress.
Cypress, on the other hand, is a newer tool that is gaining popularity due to its simplicity and reliability. Cypress tests are written in JavaScript, making it easier for front-end developers to get started with automated testing. Cypress is also faster than Selenium and can run tests in parallel, making it more efficient.
So, which one should you use? It depends on your needs. If you need a more flexible tool that can be used with different programming languages, Selenium is a good choice. However, if you want a tool that is easier to use and more reliable, Cypress is the better option.
If you need access to things outside the browser, I would go with selenium. This is what I currently do, I have a webdriver wrapper which has "plugins" loaded so that I can make db statements, query the webserver and additionally issue selenium commands to the browser.
If you're looking for just test 100% within the browser, then cypress may be the way to go.
Alternatively, you could use selenium for workflow tests and cypress or even qunitjs for intra-browser unit tests.
In the app I work on, I actually ship a page which contains a qunit page with all of the in-browser tests. Then in a selenium test, in addition to the rest of the workflow, I browser to the qunit page and report on their status as well.
I was just wondering if this was the default behaviour when starting up Intern with a Selenium Tunnel. At the moment, before running any tests, random pages that appear to look like the Intern-tutorial, which I used to learn how to run tests with Intern, seem to come up before attempting to run any of my own tests.
I have set up a vanilla install with no tests set up to demonstrate this behaviour. Please see the video link given below as reference if I have been unclear.
https://www.youtube.com/watch?v=vC15PbjSxVw
Leadfoot, which is the WebDriver implementation used by Intern, performs feature and defect tests on the browser before testing starts. These tests tell intern about features that a particular browser might not support, or might implement incorrectly, giving Intern (well, Leadfoot) a chance to work around them.
I am a newbie to Automated Testing using WebDriver, so I have a few questions just to clear some things in my head. On a few pages, I saw the samples of executing WebDriver tests on different platforms by just targeting these for the capabilities of the browser or OS.
capability= DesiredCapabilities.firefox();
capability.setBrowserName("firefox");
capability.setPlatform(org.openqa.selenium.Platform.ANY);
or
capability= DesiredCapabilities.internetExplorer();
capability.setBrowserName("iexplore");
capability.setPlatform(org.openqa.selenium.Platform.WINDOWS);
As mentioned in:
Executing tests Concurrently on different OS and Browsers with WebDriver using Java and TestNG
So, if I understand that correctly, actually it is possible to run tests and verify those on the different OS and Browsers just by using the libraries provided by the Selenium?
If so, how accurate are these tests for typical cross browser/platform html/JavaScript issues?
Thank you
This is a great question. I'm going to try to break this down into smaller packets of information so that it hopefully makes sense for old pros and newbies alike.
Without Selenium Grid:
For starters, it is possible to use individual drivers for all the different browser/OS combinations you wish to run the tests on. The drawback is you have to make some (though usually minimal) code adjustments for each browser's driver. This also means breaking the DRY principle. To learn more about writing these kinds of tests check out this documentation. (Also note that if you wanted to run these tests on each build via CI on something like Jenkins you need to have the actual browsers running on a slave on your own hardware, but these are more the DevOps concerns.)
Using Selenium Grid:
More commonly used for the sort of goals you mentioned (and referenced in the other post you linked to), Selenium Grid is a server that allows multiple instances of tests to run in different web browsers on remote machines. The more intro oriented docs for this are here and more forward looking docs are here.
Running Local or in the Cloud:
With Selenium Grid you are going to go one of two ways.
Run on your own hardware locally (or wherever your company has machines to remote into)
Use an online service like Sauce Labs or Testing Bot
A nice "what this might look like in Java" for having an online service provide the browsers is shown in this Sauce Labs page and for Testing Bot here.
Selenium Can be Written in a Ton of Languages:
Selenium follows the WebDriver API and for C#, Java, Perl, PHP, Python, Ruby, JavaScript (Node) or other languages, you still can write test scripts in any of these (and they provide the “frameworks” for some of these officially, while others are community driven) and still have the run tests run solidly in all modern browsers.
Concerning Mobile Devices
There is some good discussion over here that discusses how "close to the real thing" you want your mobile browser tests to be, since the iPhoneDriver and AndroidDriver are largely based on use through WebView, which is less close to the real thing. They are now finding themselves being replaced by ios-driver, Selendroid, and Appium.
To Sum It Up
So to answer what I think you’re getting at with,
... is possible to run tests and verify those on the different OS and Browsers just
by using the libraries provided by the Selenium
the answer is that you can use Selenium Grid and an online service or you will have to use base Selenium/Selenium Server along with a number of other libraries to test all modern browser and OS combinations, but I'm sure many shops do just that because they have the experience and expertise to pull it off.
Alternate (Non-Selenium) Option to Write Once and Test Across Browsers:
If you have a team with JavaScript experience and you're looking to hit the same goal of testing across browsers without the overhead of Selenium, Automates JavaScript Unit Testing
with Sauce Labs (formerly Browser Swarm) would be a good option.
Over 2 years I tested web application with help Selenium framework. I know the best design is testing on VM.
The only one downside of this - it's very slow testing. Why?
browser only gets so much memory, if you will run several instances.
site coud be very slow.
connections can be very slow.
Would be great if there was a framework that emulated the browser (engine/core) correctly and can provide some results (api) for surf on the page.
I don't mean to simulate just on the one browser with different version (like IE). I mean to simulate for all browsers with very popular and newest version.
Does anyone know a framework/tool that can do it?
Thank you.
You can try PhantomJS for example.
From their page:
PhantomJS is a headless WebKit with JavaScript API. It has fast and
native support for various web standards: DOM handling, CSS selector,
JSON, Canvas, and SVG.
You can use it in combination with Jasmine (as well as several other frameworks) for testing.
However the selection of available engines is limited to WebKit. I doubt that Selenium will be easy to replace. By the way it looks like Selenium will probably become a W3C standard over the next years.
You can also run Selenium with Xvfb - I use it to execute test on remote server and it is going very well.
In my current project we are testing our ASP.NET GUI using WatiN and Mbunit.
When I was writing the tests I realized that it would be great if we also could use all of these for stresstesting. Currently we are using Grinder to stresstest but then we have to script our cases all over again which for many reasons isent that good.
I have been trying to find a tool that can use my existing tests to create load on the site and record stats, but so far i have found noting. Is there such a tool or is there an easy way to create one?
We have issues on our build server when running WatiN tests as it often throws timeouts trying to access the Internet Explorer COM component. It seems to hang randomly while waiting for the total page to load.
Given this, I would not recommend it for stress testing as the results will be inaccurate and the tests are likely to be slow.
I would recommend JMeter for making threaded calls to the HTTP requests that your GUI is making
For load testing there is a tool which looks promising - LoadStorm. Free for 25 users. It has zero deployment needs as this is a cloud based service.
You could build a load controller for your stress testing. It could take your watin tests and run them in a multithreaded/multiprocessed way.
If you are comfortable using Selenium instead of WatiN, check out BrowserMob for browser-based load testing. I'm one of the Selenium RC authors and started BrowserMob to provide a new way to load test. By using real browsers, rather than simulated traffic, tests end up being much easier to script and maintain.