selenium通过WebDriverWait实现ajax测试

AndroidDriver driver = new AndroidDriver();
driver.get("http://m.taobao.com");
WebElement inputBox = driver.findElement(By.id("J_SKey"));
inputBox.sendKeys("1");
new WebDriverWait(driver, 10).until (new ExpectedCondition<Boolean>() {
    @Override
    public Boolean apply(WebDriver driver) {
        Boolean result = false;
        try {
            driver.findElement(By.xpath("//div[@class='suggest']//li"));
            result = true;
        } catch(Exception e){
        }
        return result;
    }
});
assertTrue(driver.findElement(By.xpath("//div[@class='suggest']//li")).getText().contains("1"));

WebDriverWait(driver, 10)10秒内每隔500毫秒扫描1次页面变化，当出现指定的元素后结束。