如何成功传递此代码?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CallBrowser传递给SetUp如下所示：

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，我确定我只是在传递驱动程序和参数时做错了。

有人可以解释我需要对两个类进行哪些更改以使其正常工作吗？

这些是错误：

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

您的问题是调用拆解时驱动程序未初始化。您需要确保在所有情况下都已初始化它。我会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。当事情运行时，您还有两个驱动程序在场。一个是在代码的第一部分中声明的静态驱动程序，然后是另一个非静态驱动程序，该驱动程序位于实际测试中。我会解决这个问题，因为它可能会导致问题。

解决问题的最简单方法是确保在安装过程中始终初始化驱动程序，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);
      }
}