如何更改WebDriver的语言？

Question

我想用不同的语言执行我的Selenium测试.是否可以在运行时更改现有WebDriver的语言,还是必须重新创建浏览器实例？

现在我只使用Firefox,但我想稍后在不同的浏览器中执行测试.

在Firefox中我设置了这样的语言:

FirefoxProfile profile = new FirefoxProfile();
profile.setPreference("intl.accept_languages", "de");
WebDriver driver = new FirefoxDriver(profile);

我还实现了一个WebDriverPool,它包含一个WebDriver实例,因此可以在测试之间共享.如果只能在创建时设置语言,我可以为每个语言环境保存一个实例.

总而言之,我想知道我在这里是否遗漏了什么.为什么改变语言这么难？不应该有这样的方法WebDriver.setAcceptLanguages(Locale)吗？

简而言之,我有以下问题:

1. 为什么不存在WebDriver.setAcceptLanguages(Locale)？
2. 如何更改dirrerent WebDrivers的语言？
3. 我可以在运行时更改语言吗？
4. 你是如何实现你的WebDriverPool或者你每次都重新创建它们的？

Answer 1

我最终创建了一个WebDriverPool,它为WebDriver类型(例如FirefoxDriver.class)和Locale(例如en_US)的每个组合创建一个实例.也许这对某人来说是有用的.

public class WebDriverPool {

  private Map<String, WebDriver> drivers = new HashMap<String, WebDriver>();
  private List<WebDriver> driversInUse = new ArrayList<WebDriver>();

  public WebDriverPool() {
    Runtime.getRuntime().addShutdownHook(new Thread(){
      @Override
      public void run(){
        for (WebDriver driver : drivers.values())
          driver.close();

        if (!driversInUse.isEmpty())
          throw new IllegalStateException("There are still drivers in use, did someone forget to return it? (size: " + driversInUse.size() + ")");
      }
    });
  }

  private WebDriver createFirefoxDriver(Locale locale){
    FirefoxProfile profile = new FirefoxProfile();
    profile.setPreference("intl.accept_languages", formatLocale(locale));
    return new FirefoxDriver(profile);
  }

  private String formatLocale(Locale locale) {
    return locale.getCountry().length() == 0
      ? locale.getLanguage()
      : locale.getLanguage() + "-" + locale.getCountry().toLowerCase();
  }

  /**
   * @param clazz
   * @param locale
   * @return web driver which can be new or recycled
   */
  public synchronized WebDriver getWebDriver(Class<? extends WebDriver> clazz, Locale locale){

    String key = clazz.getName() + "-" + locale;

    if(!drivers.containsKey(key)){

      if(clazz == FirefoxDriver.class){
        drivers.put(key, createFirefoxDriver(locale));
      }

      // TODO create other drivers here ...

      // else if(clazz == ChromeDriver.class){
      //     drivers.put(key, createChromeDriver(locale));
      // }

      else{
        throw new IllegalArgumentException(clazz.getName() + " not supported yet!");
      }
    }

    WebDriver driver = drivers.get(key);

    if(driversInUse.contains(driver))
      throw new IllegalStateException("This driver is already in use. Did someone forgot to return it?");

    driversInUse.add(driver);
    return driver;
  }

  public synchronized void returnWebDriver(WebDriver driver){
    driversInUse.remove(driver);
  }
}

Answer 2

你也可以通过about:config在firefox中完成.但是你需要使用Actions来操纵它.

下面是一段java代码

    Actions act = new Actions(webDriver);          

    webDriver.get("about:config");

    // warning screen
    act.sendKeys(Keys.RETURN).perform();

    // Go directly to the list, don't use the search option, it's not fast enough
    act.sendKeys(Keys.TAB).perform();

    // Go to the intl.accept_languages option
    act.sendKeys("intl.accept_languages").sendKeys(Keys.RETURN).perform();

    // fill the alert with your parameters
    webDriver.switchTo().alert().sendKeys("fr, fr-fr, en-us, en");
    webDriver.switchTo().alert().accept();