我尝试对功能文件的 cucumber 并行执行进行编码,但在控制台上打印出如下错误:
[TestNG-PoolService-0] ERROR com.nicholas.StepsDef.ExportProduct - java.lang.NullPointerException
Element info: {Using=xpath, value=//a[@class='log-wrapper']/child::img}
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at java.base/jdk.internal.reflect.NativeConstructorAccessorImpl.newInstance(NativeConstructorAccessorImpl.java:62)
at java.base/jdk.internal.reflect.DelegatingConstructorAccessorImpl.newInstance(DelegatingConstructorAccessorImpl.java:45)
at java.base/java.lang.reflect.Constructor.newInstance(Constructor.java:490)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.createException(W3CHttpResponseCodec.java:187)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:122)
at org.openqa.selenium.remote.http.W3CHttpResponseCodec.decode(W3CHttpResponseCodec.java:49)
at org.openqa.selenium.remote.HttpCommandExecutor.execute(HttpCommandExecutor.java:158)
at org.openqa.selenium.remote.service.DriverCommandExecutor.execute(DriverCommandExecutor.java:83)
at org.openqa.selenium.remote.RemoteWebDriver.execute(RemoteWebDriver.java:552)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:323)
at org.openqa.selenium.remote.RemoteWebDriver.findElementByXPath(RemoteWebDriver.java:428)
at org.openqa.selenium.By$ByXPath.findElement(By.java:353)
at org.openqa.selenium.remote.RemoteWebDriver.findElement(RemoteWebDriver.java:315)
at org.openqa.selenium.support.ui.ExpectedConditions$7.apply(ExpectedConditions.java:205)
at org.openqa.selenium.support.ui.ExpectedConditions$7.apply(ExpectedConditions.java:201)
at org.openqa.selenium.support.ui.FluentWait.until(FluentWait.java:249)
at com.nicholas.StepsDef.AddProduct.navigateToManageProduct(AddProduct.java:65)
at ✽.navigate to manage product(file:///C:/Users/nicholaswkc/IdeaProjects/cucumber-java-skeleton/src/test/resources/Features/AddProduct.feature:7)
05:38:22.730 [TestNG-PoolService-0] ERROR com.nicholas.StepsDef.ExportProduct - java.lang.NullPointerException
05:38:22.780 [TestNG-PoolService-0] ERROR com.nicholas.StepsDef.AddProduct - org.openqa.selenium.NoSuchSessionException: invalid session id
AddProductPageObject.java
public By lazadaLogo = By.xpath("//a[@class='log-wrapper']/child::img");
AddProduct.java
public class AddProduct {
private AddProductPageObject page;
private ChromeDriver driver;
private Logger log = LogManager.getLogger(AddProduct.class);
// ======================================================================
public AddProduct() {
}
@Given("Launch the homepage and login")
public void launchTheHomepageAndLogin() {
log.info("Start Login");
try {
WebDriverManager.chromedriver().setup();
driver = new ChromeDriver();
WebDriverWait timeWait = new WebDriverWait(driver, 30);
page = PageFactory.initElements(driver, AddProductPageObject.class);
driver.navigate().to("https://sellercenter.lazada.com.my/apps/seller/login");
timeWait.until(ExpectedConditions.visibilityOfElementLocated(page.getLazadaSellerLogo()));
// Input username
driver.findElement(page.getUsername()).click();
driver.findElement(page.getUsername()).clear();
driver.findElement(page.getUsername()).sendKeys("<a href="https://stackoverflow.com/cdn-cgi/l/email-protection" class="__cf_email__" data-cfemail="325c5b515a5d5e5341455951010672555f535b5e1c515d5f" rel="noreferrer noopener nofollow">[email protected]</a>");
// Input password
driver.findElement(page.getPassword()).click();
driver.findElement(page.getPassword()).clear();
driver.findElement(page.getPassword()).sendKeys("wlx_+279295");
// Click submit btn
driver.findElement(page.getSignInButton()).click();
//assertThat(page.getPageTitle()).isEqualto("");
Wait wait = new Wait();
wait.implicitWait(driver, 5);
} catch (Exception e) {
log.error(e);
}
}
@Given("navigate to manage product")
public void navigateToManageProduct() {
WebDriverWait waitProductLink = new WebDriverWait(driver, 30);
waitProductLink.until(ExpectedConditions.visibilityOfElementLocated(page.getLazadaLogo()));
driver.findElement(page.getProductLink()).click();
WebDriverWait waitManagedProductLink = new WebDriverWait(driver, 30);
waitManagedProductLink.until(ExpectedConditions.visibilityOfElementLocated(page.getManageProductLink()));
driver.findElement(page.getManageProductLink()).click();
}
此外,当我使用 mvn 命令运行时,它会弹出 org.testng.xml.XmlSuite.setParallel(Ljava/lang/String;)
,这在此 group 上突出显示。
问题:
- 导致错误的原因是什么?
- maven Surefire 插件错误何时应该修复?
最佳答案
我发现“at com.nicholas.StepsDef.AddProduct.navigateToManageProduct(AddProduct.java:65)”方法 page.getLazadaLogo() 发生错误。
我假设驱动程序对象在创建 WebDriverWait waitProductLink = new WebDriverWait(driver, 30);
对象时保持 null。一般来说,WebDriverWait 在其构造函数参数中接受 null,但当我们尝试使用使用 null 创建的等待对象时,它会在运行时抛出错误。
解决方案:
检查驱动程序在“导航到管理产品”实现步骤中保存的内容。特定于该特定 block 的“启动主页并登录”驱动程序分配的范围。要解决此问题,请将驱动程序变量设为静态,并在步骤“启动主页并登录”实现中为其分配驱动程序对象引用。
如果这两个步骤并行运行,那么您还需要在“导航到管理产品”实现步骤中创建驱动程序对象。
关于java - 并行执行功能文件会导致控制台上打印出空指针异常,我们在Stack Overflow上找到一个类似的问题: https://stackoverflow.com/questions/68322890/