java - 怎样才能成功通过这个代码呢？ Java Webdriver TestNg

Question

我想将此代码传递给我的其他类，这样我就不必继续粘贴它。

这是包含代码的类:

package utility;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.Parameters;
import org.testng.annotations.Test;

public class BrowserType {
    public static WebDriver driver;

    @Parameters("browser")
    @Test
    public static void CallBrowser(String browser) {

        if(browser.equalsIgnoreCase("firefox")) {

              driver = new FirefoxDriver();

          // If browser is IE, then do this   

          }else if (browser.equalsIgnoreCase("chrome")) { 

              // Here I am setting up the path for my IEDriver

              {System.setProperty("webdriver.chrome.driver","C:/Users/elsid/Desktop/Eclipse/Selenium/chromedriver.exe");}
               driver = new ChromeDriver();

              driver.get(Constant.URL);

          } 

    }
}

我想将 CallBrowser 传递给下面的 SetUp:

package automationFramework;

import java.util.concurrent.TimeUnit;

import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;
import org.openqa.selenium.firefox.FirefoxDriver;
import org.testng.annotations.AfterMethod;
import org.testng.annotations.BeforeMethod;
import org.testng.annotations.Parameters;
import org.testng.annotations.Test;

import utility.Constant;
import appModule.SignIn_Action;

public class SignIn {

    public WebDriver driver;



@BeforeMethod
@Parameters("browser")
public void SetUp(String browser) {

     if(browser.equalsIgnoreCase("firefox")) {

          driver = new FirefoxDriver();

      // If browser is Chrome, then do this   

      }else if (browser.equalsIgnoreCase("chrome")) { 

          { System.setProperty("webdriver.chrome.driver","C:/Users/elsid/Desktop/Eclipse/Selenium/chromedriver.exe");}
          driver = new ChromeDriver();

          { driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);}
          {driver.manage().window().maximize();}
           driver.get(Constant.URL);
      }
      } 

@Test
public  void signIn() {

    SignIn_Action.Execute(driver, Constant.DevStudentUsername, Constant.DevStudentPassword);      
 }  

@AfterMethod
public void Teardown() {
    driver.quit();

} 

  }

我尝试只调用静态类，但随后 @BeforeMethod 抛出配置错误，我确信我只是在传递驱动程序和参数时做错了。

有人可以解释一下我需要对这两个类进行哪些更改才能使其正常工作吗？

以下是错误:

FAILED CONFIGURATION: @AfterMethod Teardown
java.lang.NullPointerException
    at automationFramework.SignIn.Teardown(SignIn.java:38)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
    at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:564)
    at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:213)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:786)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
    at org.testng.TestRunner.privateRun(TestRunner.java:767)
    at org.testng.TestRunner.run(TestRunner.java:617)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
    at org.testng.SuiteRunner.run(SuiteRunner.java:240)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
    at org.testng.TestNG.run(TestNG.java:1057)
    at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)

FAILED: signIn
java.lang.NullPointerException
    at appModule.SignIn_Action.Execute(SignIn_Action.java:27)
    at automationFramework.SignIn.signIn(SignIn.java:33)
    at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
    at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
    at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
    at java.lang.reflect.Method.invoke(Unknown Source)
    at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:84)
    at org.testng.internal.Invoker.invokeMethod(Invoker.java:714)
    at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:901)
    at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1231)
    at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:127)
    at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:111)
    at org.testng.TestRunner.privateRun(TestRunner.java:767)
    at org.testng.TestRunner.run(TestRunner.java:617)
    at org.testng.SuiteRunner.runTest(SuiteRunner.java:334)
    at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:329)
    at org.testng.SuiteRunner.privateRun(SuiteRunner.java:291)
    at org.testng.SuiteRunner.run(SuiteRunner.java:240)
    at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
    at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
    at org.testng.TestNG.runSuitesSequentially(TestNG.java:1224)
    at org.testng.TestNG.runSuitesLocally(TestNG.java:1149)
    at org.testng.TestNG.run(TestNG.java:1057)
    at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:111)
    at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:204)
    at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:175)


===============================================
    Default test
    Tests run: 1, Failures: 1, Skips: 0
    Configuration Failures: 1, Skips: 0
===============================================


===============================================
Suite
Total tests run: 1, Failures: 1, Skips: 0
Configuration Failures: 1, Skips: 0
===============================================

这就是我尝试调用代码的方式:

public WebDriver driver;



@BeforeMethod
@Parameters("browser")
public void SetUp(String browser) {

     BrowserType.CallBrowser(browser);
      } 

Answer 1

您的问题是，当您调用拆卸时，您的驱动程序未初始化。您需要确保它在所有情况下都已初始化。我将使用调试器检查您的代码，并检查以确保当您点击安装和拆卸方法时，驱动程序实际上在安装时已初始化并在拆卸时存在。运行时还有两个驱动程序在场。一个是您在代码的第一部分中声明的静态驱动程序，然后您可以在实际测试中找到另一个非静态驱动程序。我会解决这个问题，因为它可能会引起问题。

解决问题的最简单方法是确保驱动程序在安装过程中始终初始化，即使字符串与任一选项都不匹配。

public void SetUp(String browser) {

     if(browser.equalsIgnoreCase("firefox")) {

          driver = new FirefoxDriver();

      // If browser is Chrome, then do this   

      }else { 

          System.setProperty("webdriver.chrome.driver","C:/Users/elsid/Desktop/Eclipse/Selenium/chromedriver.exe");
          driver = new ChromeDriver();

          { driver.manage().timeouts().implicitlyWait(10, TimeUnit.SECONDS);}
          {driver.manage().window().maximize();}
           driver.get(Constant.URL);
      }
}