Getting Null Pointer Exception while running Selenium - TestNG Scripts using pagefactory

Getting Null Pointer Exception while running Selenium - TestNG Scripts using pagefactory



I have created 3 different classes like SelectBrowserTest, GmailLoginPOTest and SampleTest (this is my test case). i tried to call the methods from SelectBrowserTest and GmailLoginPOTest to SampleTest. But, Am continuously getting Null pointer exception. Can any one help to solve this?



Code



SampleTest:


package TestCases;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.PageFactory;
import org.testng.annotations.*;
import TCPSampleProject.SelectBrowserTest;
import pageObjects.GmailLoginPOTest;

public class SampleTest

static WebDriver driver;
private static GmailLoginPOTest g1;

@BeforeMethod
public void OpenBrowser()
SelectBrowserTest open = new SelectBrowserTest();
open.ChromeBrowser();



@AfterMethod
public void CloseBrowser()
SelectBrowserTest close = new SelectBrowserTest();
close.Close();


@Test(priority = 0)
public static void GmailLogin()

g1 = PageFactory.initElements(driver, GmailLoginPOTest.class);

g1.GmailLink.click();
System.out.println("Gmail Link clicked");
g1.SignInLink.click();
g1.EmailIDTextBox.sendKeys("rvigneshprabu");
g1.EmailNextButton.click();
g1.PasswordTextBox.sendKeys("Password");
g1.PswdNextButton.getText();
System.out.println("Gmail Login Completed");





GmailLoginPOTest:


package pageObjects;
import org.openqa.selenium.WebElement;
import org.openqa.selenium.support.FindBy;


public class GmailLoginPOTest


@FindBy(linkText = "Gmail")
public WebElement GmailLink;

@FindBy(xpath = ".//a[contains(text(),'Sign In')]")
public WebElement SignInLink;

@FindBy(id = "identifierId")
public WebElement EmailIDTextBox;

@FindBy(id = "identifierNext")
public WebElement EmailNextButton;

@FindBy(name = "password")
public WebElement PasswordTextBox;

@FindBy(id = "passwordNext")
public WebElement PswdNextButton;



SelectBrowserTest:


package TCPSampleProject;

import java.io.File;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import org.apache.commons.io.FileUtils;
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;



public class SelectBrowserTest

WebDriver driver;

public void ChromeBrowser()
System.setProperty("webdriver.chrome.driver",
"//Users//vigneshprabur//Documents//Automation//Drivers//chromedriver");
driver = new ChromeDriver();
driver.manage().window().maximize();
driver.get("https://www.google.com");
driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);



public void Close()
driver.quit();
System.out.println("Browser Closed");



public void ScreenShot()

try
File ScrShot = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
FileUtils.copyFile(ScrShot, new File("/Users/vigneshprabur/Documents/Automation/Screenshots/image_"+System.currentTimeMillis()+".png"));
System.out.println("Screenshot Taken");

catch (IOException e)
System.out.println("Exception While Taking Screenshot" + e.getMessage());







These 3 are my class files. While running the script am getting the following error message.



Output:


FAILED CONFIGURATION: @AfterMethod CloseBrowser
java.lang.NullPointerException
at TCPSampleProject.SelectBrowserTest.Close(SelectBrowserTest.java:29)
at TestCases.SampleTest.CloseBrowser(SampleTest.java:25)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124)
at org.testng.internal.MethodInvocationHelper.invokeMethodConsideringTimeout(MethodInvocationHelper.java:59)
at org.testng.internal.Invoker.invokeConfigurationMethod(Invoker.java:455)
at org.testng.internal.Invoker.invokeConfigurations(Invoker.java:222)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:643)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:716)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:988)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.privateRun(TestRunner.java:648)
at org.testng.TestRunner.run(TestRunner.java:505)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)
at org.testng.SuiteRunner.run(SuiteRunner.java:364)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)
at org.testng.TestNG.runSuites(TestNG.java:1049)
at org.testng.TestNG.run(TestNG.java:1017)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)

FAILED: GmailLogin
java.lang.NullPointerException
at org.openqa.selenium.support.pagefactory.DefaultElementLocator.findElement(DefaultElementLocator.java:69)
at org.openqa.selenium.support.pagefactory.internal.LocatingElementHandler.invoke(LocatingElementHandler.java:38)
at com.sun.proxy.$Proxy9.click(Unknown Source)
at TestCases.SampleTest.GmailLogin(SampleTest.java:33)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:62)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:498)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:124)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:580)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:716)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:988)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:125)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:109)
at org.testng.TestRunner.privateRun(TestRunner.java:648)
at org.testng.TestRunner.run(TestRunner.java:505)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:455)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:450)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:415)
at org.testng.SuiteRunner.run(SuiteRunner.java:364)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:84)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1208)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1137)
at org.testng.TestNG.runSuites(TestNG.java:1049)
at org.testng.TestNG.run(TestNG.java:1017)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:114)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:251)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:77)






You are missing chromedriver.exe In System.setProperty("webdriver.chrome.driver", "//Users//vigneshprabur//Documents//Automation//Drivers//chromedriver//chromedriver.exe");

– Ankur Singh
Sep 8 '18 at 9:00






Hi @AnkurSingh am running scripts from the Mac machine. so no need to add .exe and now browser is getting initiated but getting error in next step only.

– Vigneshprabu
Sep 8 '18 at 9:07






@Vigneshprabu, still facing the issue?

– Pradeep hebbar
Sep 9 '18 at 15:26






@Pradeephebbar, yes please help me to resolve this?

– Vigneshprabu
Sep 10 '18 at 6:15




1 Answer
1



Please try the below code.In your SampleTest class the driver is null.Thats why you got null pointer exception.



SampleTest.java


package TestCases;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.support.PageFactory;
import org.testng.annotations.*;
import TCPSampleProject.SelectBrowserTest;
import pageObjects.GmailLoginPOTest;

public class SampleTest

static WebDriver driver;
private static GmailLoginPOTest g1;
SelectBrowserTest open;

@BeforeMethod
public void OpenBrowser()
open = new SelectBrowserTest();
open.ChromeBrowser();
driver = open.getDriver();


@AfterMethod
public void CloseBrowser()
open.Close();


@Test(priority = 0)
public static void GmailLogin()
g1 = PageFactory.initElements(driver, GmailLoginPOTest.class);
g1.GmailLink.click();
System.out.println("Gmail Link clicked");
g1.SignInLink.click();
g1.EmailIDTextBox.sendKeys("rvigneshprabu");
g1.EmailNextButton.click();
g1.PasswordTextBox.sendKeys("Password");
g1.PswdNextButton.getText();
System.out.println("Gmail Login Completed");





SelectBrowserTest .java


package TCPSampleProject;

import java.io.File;
import java.io.IOException;
import java.util.concurrent.TimeUnit;
import org.apache.commons.io.FileUtils;
import org.openqa.selenium.OutputType;
import org.openqa.selenium.TakesScreenshot;
import org.openqa.selenium.WebDriver;
import org.openqa.selenium.chrome.ChromeDriver;



public class SelectBrowserTest

WebDriver driver;

public WebDriver getDriver()
return driver;


public void ChromeBrowser()
System.setProperty("webdriver.chrome.driver",
"//Users//vigneshprabur//Documents//Automation//Drivers//chromedriver");
driver = new ChromeDriver();
driver.manage().window().maximize();
driver.get("https://www.google.com");
driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);



public void Close()
driver.quit();
System.out.println("Browser Closed");



public void ScreenShot()

try
File ScrShot = ((TakesScreenshot) driver).getScreenshotAs(OutputType.FILE);
FileUtils.copyFile(ScrShot, new File("/Users/vigneshprabur/Documents/Automation/Screenshots/image_"+System.currentTimeMillis()+".png"));
System.out.println("Screenshot Taken");

catch (IOException e)
System.out.println("Exception While Taking Screenshot" + e.getMessage());







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