Java Null pointer exception for testing automation framework

Question

I am trying to write an automation framework using Java and selenium. While running Junit tests, Firefox browser starts but it cannot go to my local site. I get a NullPointer Exception. I am new to Java, any help will be greatly appreciated. Thanks

  java.lang.NullPointerException
at WordpressFramework.LoginPage.GoTo(LoginPage.java:18)
at WordpressTest.LoginTests.Admin_User_Can_Log_In(LoginTests.java:26)
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.junit.runners.model.FrameworkMethod$1.runReflectiveCall(FrameworkMethod.java:50)
at org.junit.internal.runners.model.ReflectiveCallable.run(ReflectiveCallable.java:12)
at org.junit.runners.model.FrameworkMethod.invokeExplosively(FrameworkMethod.java:47)
at org.junit.internal.runners.statements.InvokeMethod.evaluate(InvokeMethod.java:17)
at org.junit.internal.runners.statements.RunBefores.evaluate(RunBefores.java:26)
at org.junit.runners.ParentRunner.runLeaf(ParentRunner.java:325)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:78)
at org.junit.runners.BlockJUnit4ClassRunner.runChild(BlockJUnit4ClassRunner.java:57)
at org.junit.runners.ParentRunner$3.run(ParentRunner.java:290)
at org.junit.runners.ParentRunner$1.schedule(ParentRunner.java:71)
at org.junit.runners.ParentRunner.runChildren(ParentRunner.java:288)
at org.junit.runners.ParentRunner.access$000(ParentRunner.java:58)
at org.junit.runners.ParentRunner$2.evaluate(ParentRunner.java:268)
at org.junit.runners.ParentRunner.run(ParentRunner.java:363)
at org.eclipse.jdt.internal.junit4.runner.JUnit4TestReference.run(JUnit4TestReference.java:50)
at org.eclipse.jdt.internal.junit.runner.TestExecution.run(TestExecution.java:38)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:459)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:675)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:382)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:192)

public class LoginTests {

        @Before
        public void Init()
        {
            Driver_Setup.Initialize();
        }

        @Test
        public void Admin_User_Can_Log_In(){

            LoginPage.GoTo();
            LoginPage.LoginAs("rizwan").WithPassword("*****").Login();

public class Driver_Setup {

private static WebDriver instance;

public static WebDriver getWebDriver() {
    return instance;
}

public static void setWebDriver(WebDriver instance) {
    Driver_Setup.instance = instance;
     }


           public static void Initialize()
            {   WebDriver webdriver=new   FirefoxDriver();                

      webdriver.manage().timeouts().implicitlyWait(10,TimeUnit.SECONDS);    }
}

public class LoginPage {

public static void GoTo() {


Driver_Setup.getWebDriver().navigate().to("http://localhost:57464/wp-login.php");


}

public static LoginCommand LoginAs(String username)
{

     return new LoginCommand(username);

}

public static class LoginCommand
{
    private   String username;
    private String password;

    public LoginCommand(String username)
    {
        this.username = username;
    }

    public LoginCommand WithPassword(String password) {
        this.password= password;
                return this;
    }

    public void Login() {
      WebElement loginInput = Driver_Setup.getWebDriver().findElement(By.id("user_login"));
      loginInput.sendKeys(username);
      WebElement passwordInput = Driver_Setup.getWebDriver().findElement(By.id("user_pass"));

      WebElement loginButton = Driver_Setup.getWebDriver().findElement(By.id("wp-submit"));

      loginButton.click();
    }
  }

alecxe · Accepted Answer · 2015-12-21 03:12:46Z

3

Looks like the problem is inside Driver_Setup class - getWebDriver returns null since you have not called setWebDriver() to set the instance value.

answered Dec 21, 2015 at 3:12

alecxe

476k127 gold badges1.1k silver badges1.2k bronze badges

Sign up to request clarification or add additional context in comments.

3 Comments

rrene Over a year ago

Thank you so much for the info. Sorry, I am new to Java and trying to follow along a tutorial that is in C#. Would it be possible for you to say where and how to call setWebDriver() in the code

alecxe Over a year ago

@RizwanRahmanRenesa I think it's just that you need to replace WebDriver webdriver =new FirefoxDriver() with instance = new FirefoxDriver().

rrene Over a year ago

Thank you so much for the solution.You are a life saver :)

Collectives™ on Stack Overflow

Java Null pointer exception for testing automation framework

1 Answer 1

3 Comments

Your Answer

Hot Network Questions

Collectives™ on Stack Overflow

1 Answer 1

3 Comments

Your Answer

Sign up or log in

Post as a guest

Related