Question

我目前正在尝试通过在其中实现Page Object Model来改进Selenium测试用例。但是，我正在测试的网站处理许多模式。当我尝试访问某些模态时，出现NullPointerException。我不知道驾驶员是否在等待元素或什么。

这是我的课程：

页面对象

<div class="row-wrap">
  <div class="row-top">uppertext1</div>
  <div class="row-middle">My</div>
  <div class="row-bottom">bottomtext1</div>
</div>

<div class="row-wrap">
  <div class="row-top">uppertext2</div>
  <div class="row-middle">Name</div>
  <div class="row-bottom">bottomtext2</div>
</div>

<div class="row-wrap">
  <div class="row-top">uppertext3</div>
  <div class="row-middle">Is</div>
  <div class="row-bottom">bottomtext3</div>
</div>

<div class="row-wrap">
  <div class="row-top">uppertext4</div>
  <div class="row-middle">Some</div>
  <div class="row-bottom">bottomtext4</div>
</div>

<div class="row-wrap">
  <div class="row-top">uppertext5</div>
  <div class="row-middle">Long Name</div>
  <div class="row-bottom">bottomtext5</div>
</div>

}

测试课程

public class ManualShipmentModal
{
WebDriver driver;
WebDriverWait wait;

@FindBy(id = "manual-order-modal")
WebElement modalBody;

@FindBy(name = "mailToName")
WebElement toName;

/* Constructor */
public ManualShipmentModal(WebDriver driver)
{
    this.driver = driver;
    driver.manage().timeouts().pageLoadTimeout(10, TimeUnit.SECONDS);
    driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);

    AjaxElementLocatorFactory factory = new AjaxElementLocatorFactory(driver, 100);
    PageFactory.initElements(factory, this);
}

public boolean modalExists()
{
    return modalBody.isDisplayed();
}

public void enterToAddress(String toName, String addressName)
{
    wait.until(ExpectedConditions.visibilityOf(modalBody));
    WebElement toAddress = driver.findElement(By.linkText(addressName));

    this.toName.sendKeys(toName);
    toAddress.click();
}

运行正常，直到我调用enterToAddress（）。当达到这一点时，它将引发NullPointerException。即使我定义了隐式等待和显式等待，驱动程序似乎也不在等待元素加载。

Answer 1

WebDriverWait wait未实例化，因此调用它会抛出NullPointerException。

在ManualShipmentModal的构造函数中使用其构造函数：

public ManualShipmentModal(WebDriver driver)
{
    this.driver = driver;
    long timeOutInSeconds = 10; // just an arbitrary value example
    this.wait = new WebDriverWait(driver, timeOutInSeconds);

    // the rest of your constructor as in the original code
    driver.manage().timeouts().pageLoadTimeout(10, TimeUnit.SECONDS);
    driver.manage().timeouts().implicitlyWait(60, TimeUnit.SECONDS);

    AjaxElementLocatorFactory factory = new AjaxElementLocatorFactory(driver, 100);
    PageFactory.initElements(factory, this);
}

NelePointerException在硒中使用页面对象模型

1 个答案: