I am getting NullPointerException on executing my tests through testNg.xml, Any help?

[soumyaranjan pradhan]

java.lang.NullPointerException
at com.xxxxx.pagetests.LoginPageTests.testInvalidLogin(LoginPageTests.java:31)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:57)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:43)
at java.lang.reflect.Method.invoke(Method.java:606)
at org.testng.internal.MethodInvocationHelper.invokeMethod(MethodInvocationHelper.java:86)
at org.testng.internal.Invoker.invokeMethod(Invoker.java:646)
at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:823)
at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1131)
at org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:129)
at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:112)
at org.testng.TestRunner.privateRun(TestRunner.java:778)
at org.testng.TestRunner.run(TestRunner.java:632)
at org.testng.SuiteRunner.runTest(SuiteRunner.java:366)
at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:361)
at org.testng.SuiteRunner.privateRun(SuiteRunner.java:319)
at org.testng.SuiteRunner.run(SuiteRunner.java:268)
at org.testng.SuiteRunnerWorker.runSuite(SuiteRunnerWorker.java:52)
at org.testng.SuiteRunnerWorker.run(SuiteRunnerWorker.java:86)
at org.testng.TestNG.runSuitesSequentially(TestNG.java:1225)
at org.testng.TestNG.runSuitesLocally(TestNG.java:1150)
at org.testng.TestNG.runSuites(TestNG.java:1075)
at org.testng.TestNG.run(TestNG.java:1047)
at org.testng.remote.AbstractRemoteTestNG.run(AbstractRemoteTestNG.java:126)
at org.testng.remote.RemoteTestNG.initAndRun(RemoteTestNG.java:137)
at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:58)




My Test Class:
public class LoginPageTests extends BaseSetup{
   
   
    private WebDriver driver;
    private LoginPage loginPage;

   
   
    @BeforeTest
    public void setUp(){
        driver = getDriver();
    }   
   
   
   
   
    @Test
    public void testInvalidLogin(){
        loginPage =new LoginPage(driver);
        loginPage.enterWrongCredentials();
        loginPage.logIn();
        loginPage.verifyingTheLoginError();
    }


My LogIn page:

public class LoginPage implements LoginPage_OR {
   
    protected WebDriver driver;
    //Actions builder = new Actions(driver);

   
    public LoginPage(WebDriver driver) {
        this.driver = driver;
    }
   
    public  void enterWrongCredentials(){
        WebElement usernameField= driver.findElement(By.xpath(LoginPage_OR.userNameField));
        usernameField.sendKeys("InvalidUsername");
        driver.findElement(By.xpath(LoginPage_OR.passwordField)).sendKeys("InvalidPassword");
    }
    public void logIn(){
        driver.findElement(By.xpath(LoginPage_OR.loginButton)).click();
        driver.manage().timeouts().implicitlyWait(20, TimeUnit.SECONDS);
       
    }
   
    public void clickLanguageSelector(){
        driver.findElement(By.xpath(LoginPage_OR.languageLocator)).click();
    }
}


My Base setup:

public class BaseSetup {
   
    private WebDriver driver;
    static String driverPath = "/Users/Soumya/Documents/Automation_Workspace/ChromeDriver/";

    public WebDriver getDriver() {
        return driver;
    }

    private void setDriver(String browserType, String appURL) {
        switch (browserType) {
        case "chrome":
            driver = initChromeDriver(appURL);
            break;
        case "firefox":
            driver = initFirefoxDriver(appURL);
            break;
        default:
            System.out.println("browser : " + browserType
                    + " is invalid, Launching Firefox as browser of choice..");
            driver = initFirefoxDriver(appURL);
        }
    }

    private static WebDriver initChromeDriver(String appURL) {
        System.out.println("Launching google chrome with new profile..");
        System.setProperty("webdriver.chrome.driver", driverPath
                + "chromedriver");
        WebDriver driver = new ChromeDriver();
        driver.manage().window().maximize();
        driver.get(appURL);
        return driver;
    }

    private static WebDriver initFirefoxDriver(String appURL) {
        System.out.println("Launching Firefox browser..");
        FirefoxProfile prof = new FirefoxProfile();
        prof.setPreference("browser.startup.homepage_override.mstone", "ignore");
        prof.setPreference("xpinstall.signatures.required", false);
        prof.setPreference("toolkit.telemetry.reportingpolicy.firstRun", false);
        prof.setPreference("browser.startup.homepage", "about:blank");
        prof.setPreference("startup.homepage_welcome_url", "about:blank");
        prof.setPreference("startup.homepage_welcome_url.additional", "about:blank");
   
       
        FirefoxDriver driver = new FirefoxDriver();
        driver.manage().window().maximize();
        driver.get(appURL);
        return driver;
    }

    @Parameters({ "browserType", "appURL" })
    @BeforeClass
    public void initializeTestBaseSetup(String browserType, String appURL) {
        try {
            setDriver(browserType, appURL);

        } catch (Exception e) {
            System.out.println("Error....." + e.getStackTrace());
        }
    }
   
    @AfterClass
    public void tearDown() {
        driver.quit();
    }

}

[⇜Krishnan Mahadevan⇝]

Have you checked what is in this line ?

at com.xxxxx.pagetests.LoginPageTests.testInvalidLogin(LoginPageTests.java:31)

Is this the complete stacktrace ?

My guess is that there is a problem with your webdriver instance initialization. You also haven't told us how you are running your tests. If its via a suite file, you would need to show that as well.

You can try changing the annotation @BeforeTest to @BeforeClass in LoginPageTests

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribbings @ http://rationaleemotions.wordpress.com/

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[soumyaranjan pradhan]

Thank you for your reply, I deliberately did that(xxxxxxx), because that is my client's name.  And yes I am running through TestNg.xml.

@BeforeTest was @BeforeClass previously. I changed for debugging. My suite file:

<?xml version="1.0" encoding="UTF-8"?>
<suite name="xxxxxxx">
<parameter name="appURL" value="https://xxxxxxx"/>
<parameter name="browserType" value="chrome"/>
  <test name="LoginPageTests" enabled="true">
    <classes>
      <class name="com.xxxxxx.pagetests.LoginPageTests"/>
    </classes>
  </test>
</suite>

[⇜Krishnan Mahadevan⇝]

>>>>>> I deliberately did that(xxxxxxx), because that is my client's name.

I was NOT talking about the xxxxxx. I was talking about what is in line 31 of LoginPageTests.java

at com.xxxxx.pagetests.LoginPageTests.testInvalidLogin(LoginPageTests.java:31)

The bug lies in your code.

Make the following changes in your test code and try again. You should be fine.

Change : private WebDriver driver;  in BaseSetup.java to protected WebDriver driver;

Remove : private WebDriver driver; from LoginPageTests.java 

and try again.

Thanks & Regards
Krishnan Mahadevan

"All the desirable things in life are either illegal, expensive, fattening or in love with someone else!"
My Scribblings @ http://wakened-cognition.blogspot.com/

My Technical Scribbings @ http://rationaleemotions.wordpress.com/

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[soumyaranjan pradhan]

Yes yes I debugged it and changed it sometime back. It is working fine. Thank you so much for your help.

On Thursday, 8 September 2016 12:09:00 UTC+5:30, soumyaranjan pradhan wrote: