Step by Step Selenium - Headless Execution To Improve Selenium Script Performance

Headless browsers Cross browser testing for PhantomJS browser Cross browser testing for HTMLUnit browser What Is Headless Browser? A headless browser is a web-browser without a graphical user interface. A browser, which does not have any GUI it means which runs in the background Headless browser is used to simulate programs even though there is no browser installed on your local system Advantages Of Using Headless Browsers Headless Browsers are Faster than Real Browsers Running regression scripts take lots of time. With headless browsers, we could save time. Run tests on machine without display Disadvantages Of Using Headless Browsers Debugging is a bit difficult using headless browsers. Here browser is not visible, the only way is to capture a screenshot. Examples of Headless Drivers HtmlUnit PhantomJS ZombieJS Splash Firefox Headless Mode Headless Chrome HTMLUnit : HTMLUnitDriver is the most light weight and fastest implementation headless browser for of WebDriver. It is based on HtmlUnit Since it is not using any GUI to test, your tests will run in background without any visual interruption Code: We need to add jar files of HTMLUnit driver for project @Test public void htmlUnitBrowser() throws InterruptedException { WebDriver driver = new HtmlUnitDriver(); driver.get( "https://google.com/"); Thread.sleep(2000); driver.quit(); } PhantomJS : PhantomJS is a headless browser with JavaScript API. PhantomJSDriver is one of the drivers of Selenium WebDriver.  Code: We need to add PhantomJs jar files to project [TestMethod] public void LunchPhantamJSBrowser() { IWebDriver driver = new PhantomJSDriver(); driver.Url = "https://google.com/"; string s=driver.FindElement(By.ClassName("jumbotron")).Text; Console.WriteLine(s); driver.Quit(); } Possible Interview Questions on headless browsers : What is headless browsers Why we need to do cross browser testing in headless browser What are the pros and cons of headless browsers How to do cross browser testing for PhantomJS browser How to do cross browser testing for HTMLUnit browser