Introduction Before 59 the headless execution must be done by 3party headless browsers like , , , , and HTMLUnit. Google Chrome PhantomJS SlimerJS TrifleJS Nightmare The "problem" is that these headless browsers emulate some engines, but not V8 (Chrome engine). PhantomJS | QtWebKitSlimerJS | Gecko (Firefox)TrifleJS | Trident (Internet Explorer)Nightmare | Electron When we talk about testing, and most of the users in various segments use Google Chrome, it's necessary to simulate the real engine. How to do it with Java As Google Chrome shipping headless in version 59 (as you can see ) we can tell to ChromeDriver the options before the execution. here In the code below I added two options through : and the . ChromeOptions headless window-size The option will tell Google Chrome to execute in headless mode. headless The is a way to control the responsiveness (may your site be displayed as a mobile site if you not set a window size). window-size You can see another way to inform the ChromeOptions here https://sites.google.com/a/chromium.org/chromedriver/capabilities
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