将我的驱动程序实例列为静态的最佳做法，尤其是对于双重测试执行？

Question

将我的驱动程序实例列为静态的最佳做法，特别是对于双重测试执行？

驱动程序工厂（用于设置驱动程序实例）：

public class DriverFactory  {
public static WebDriver driver;
protected BasePage basePage;
protected LoginPage loginPage;


public WebDriver getDriver() throws Exception {
    try {
        ReadConfigFile file = new ReadConfigFile();
        String browserName = file.getBrowser();

        switch (browserName) {

        //firefox setup
        case "firefox":
            if (null == driver) {
                System.setProperty("webdriver.gecko.driver", Constant.GECKO_DRIVER_DIRECTORY);
                DesiredCapabilities capabilities=DesiredCapabilities.firefox();
                capabilities.setCapability("marionette", true);
                driver = new FirefoxDriver();
            }
            break;
            }
        }
    }

}

步骤类：（黄瓜步骤类）：

public class LoginSteps extends DriverFactory {

@Given("^User navigates to the \"([^\"]*)\" website$")
public void user_navigates_to_the_website(String url) throws Throwable {
    BasePage basePage = new BasePage();
    basePage.loadUrl(url);
}

}

基页（页面对象的基页）：

public class BasePage extends DriverFactory {
protected WebDriverWait wait;
protected JavascriptExecutor jsExecutor;

public BasePage() throws IOException {
    this.wait = new WebDriverWait(driver, 15);
    jsExecutor = ((JavascriptExecutor) driver);
}

}