HeadlessChromeConfig.java

public class HeadlessChromeConfig extends FluentTestNg {

    private static final String HEADLESS = "headless";

    @Override
    public WebDriver newWebDriver() {
        return new ChromeDriver(getChromeCapabilities());
    }

    private DesiredCapabilities getChromeCapabilities() {
        DesiredCapabilities capabilities = DesiredCapabilities.chrome();
        capabilities.setCapability(ChromeOptions.CAPABILITY, getChromeOptions());
        return capabilities;
    }

    private ChromeOptions getChromeOptions() {
        ChromeOptions options = new ChromeOptions();
        options.addArguments(getChromeSwitches());
        return options;
    }

    private List<String> getChromeSwitches() {
        List<String> chromeSwitches = new ArrayList<>();
        chromeSwitches.add(HEADLESS);
        return chromeSwitches;
    }

}