Невозможно использовать объект EventFiringWebDriver в дочернем классе

Question

Я пытаюсь настроить EventFiringWebDriver в своем проекте, я застрял в какой-то момент, когда объект EventFiringWebDriver работает нормально в том же классе &, который не работает в дочернем классе.

класс Родитель:

package utility; 

import java.util.List; 

import org.openqa.selenium.Alert; 
import org.openqa.selenium.By; 
import org.openqa.selenium.WebDriver; 
import org.openqa.selenium.WebElement; 
import org.openqa.selenium.firefox.FirefoxDriver; 
import org.openqa.selenium.support.events.EventFiringWebDriver; 
import org.testng.annotations.AfterClass; 
import org.testng.annotations.BeforeClass; 

import eventListeners.WebDriverEventHandler; 


public class common { 
    public static WebDriver driver = null; 
    protected static EventFiringWebDriver eDriver; 
    WebDriverEventHandler handler; 
    protected NavigatetoOverviews nav; 

    @BeforeClass 
    public void beforeClass() throws InterruptedException { 

     handler = new WebDriverEventHandler(); 
     System.setProperty("webdriver.firefox.profile", "default"); 
     driver = new FirefoxDriver(); 
     eDriver = new EventFiringWebDriver(driver); 
     eDriver.register(handler); 

     nav = new NavigatetoOverviews(); 
     eDriver.get("http://google.com"); 
    } 
} 

Мой ребенок класс:

package eventListeners; 

import java.util.concurrent.TimeUnit; 

import org.openqa.selenium.By; 
import org.testng.annotations.Test; 

import bsh.commands.dir; 
import utility.common; 

public class TestExtendsCommon extends common{ 

    @Test 
    public void sample() { 

     eDriver.manage().timeouts().implicitlyWait(5, TimeUnit.SECONDS); 
     eDriver.findElement(By.id("gbqfq")).sendKeys("Selenium"); 
     eDriver.findElement(By.id("gbqfba")).click(); 

    } 
} 

Мои результаты испытаний:

[TestNG] Running: 
    C:\Users\Hema\AppData\Local\Temp\testng-eclipse--492139263\testng-customsuite.xml 

Just before beforeNavigateTo http://google.com 
Inside the afterNavigateTo to http://google.com 
FAILED: sample 
java.lang.NullPointerException 
    at eventListeners.WebDriverEventHandler.beforeFindBy(WebDriverEventHandler.java:35) 
    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.openqa.selenium.support.events.EventFiringWebDriver$1.invoke(EventFiringWebDriver.java:78) 
    at com.sun.proxy.$Proxy5.beforeFindBy(Unknown Source) 
    at  org.openqa.selenium.support.events.EventFiringWebDriver.findElement(EventFiringWebDriver.java:183) 
    at eventListeners.TestExtendsCommon.sample(TestExtendsCommon.java:17) 
    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 
=============================================== 


=============================================== 
Default suite 
Total tests run: 1, Failures: 1, Skips: 0 
=============================================== 

[TestNG] Time taken by [FailedReporter passed=0 failed=0 skipped=0]: 7 ms 
[TestNG] Time taken by org.testng.reporters.JUnitReportReporter@77afea7d: 23 ms 
[TestNG] Time taken by org.testng.reporters.EmailableReporter2@6d86b085: 8 ms 
[TestNG] Time taken by org.testng.reporters.jq.Main@299a06ac: 34 ms 
[TestNG] Time taken by org.testng.reporters.XMLReporter@4ac68d3e: 9 ms 
[TestNG] Time taken by org.testng.reporters.SuiteHTMLReporter@1f89ab83: 40 ms 

Заранее спасибо.

Answer 1

Спасибо всем, кто провел некоторое время на вопрос. Наконец я нашел ответ.

Как говорится в ошибке, ошибка находится в beforeFindBy метод в WebDriverEventListener класс.

at eventListeners.WebDriverEventHandler.beforeFindBy(WebDriverEventHandler.java:35) 


public void beforeFindBy(By arg0, WebElement arg1, WebDriver arg2) { 

    System.out.println("Just before finding element " + arg1.toString()); 
} 

В приведенной выше программе, arg1 параметр будет null, когда вы найти элемент, объект WebDriver. Поэтому я изменил код, как показано ниже:

public void beforeFindBy(By arg0, WebElement arg1, WebDriver arg2) { 

     if (arg1 == null) { 
      System.out.println("Just before finding element: " + arg0.toString() + " on browser: " + arg2.toString()); 

     } else { 
      System.out.println("Just before finding element: " + arg0.toString() + " inside " + arg1.toString() + " Web element on browser: " + arg2.toString()); 
     } 

    }