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Re: Selenium instance is NULL and 2nd class says java.lang.NullPointerE

Subject: Re: Selenium instance is NULL and 2nd class says java.lang.NullPointerException
Date: Tue, 10 Aug 2010 15:32:52 -0700 (PDT)
The exception is thrown at the start of the 3 class.
15:28:12.027 INFO - Got result: OK,false on session
6be499a0a0da476394827edee1c667c3
Leveaing Method - Dummy method Verify_Walmart_Page_Title
[Invoker 26440236] Invoking
com.walmart.test.SelNG.mobilewalmart.tests.Walmart_Login_Page_Test.Verify_Login_Page_Title
Inside method  - Verify_Walmart_Login_Page_Test - Other Class
java.lang.NullPointerException
        at
com.walmart.test.SelNG.mobilewalmart.tests.Walmart_Login_Page_Test.Verify_Login_Page_Title(Walmart_Login_Page_Test.java:
21)
        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.MethodHelper.invokeMethod(MethodHelper.java:
640)
        at org.testng.internal.Invoker.invokeMethod(Invoker.java:627)
        at org.testng.internal.Invoker.invokeTestMethod(Invoker.java:798)
        at org.testng.internal.Invoker.invokeTestMethods(Invoker.java:1102)
        at
org.testng.internal.TestMethodWorker.invokeTestMethods(TestMethodWorker.java:
137)
        at org.testng.internal.TestMethodWorker.run(TestMethodWorker.java:
121)
        at org.testng.TestRunner.runWorkers(TestRunner.java:1010)
        at org.testng.TestRunner.privateRun(TestRunner.java:684)
        at org.testng.TestRunner.run(TestRunner.java:554)
        at org.testng.SuiteRunner.runTest(SuiteRunner.java:311)
        at org.testng.SuiteRunner.runSequentially(SuiteRunner.java:306)
        at org.testng.SuiteRunner.privateRun(SuiteRunner.java:268)
        at org.testng.SuiteRunner.run(SuiteRunner.java:217)
        at org.testng.TestNG.runSuite(TestNG.java:1062)
        at org.testng.TestNG.runSuitesLocally(TestNG.java:956)
        at org.testng.TestNG.run(TestNG.java:874)
        at org.testng.remote.RemoteTestNG.run(RemoteTestNG.java:75)
        at org.testng.remote.RemoteTestNG.main(RemoteTestNG.java:127)
is there a way to get the current selenium handle and start working
with it?
Thanks
On Aug 10, 2:04Âpm, CÃdric Beust â 
<[email protected]> wrote:
> I'm not seeing anything immediately wrong. You are correctly putting all
> your tests in the same <test> tag, which guarantees that whatever code you
> run in @BeforeTest should have initialized anything you need there.
>
> Where exactly is the NPE happening? Are you sure that this variable is
> initialized in @BeforeTest and not elsewhere?
>
> Also, any reason to suspect that groups might be causing some of your code
> not to be executed?
>
> --
> CÃdric
>
> On Tue, Aug 10, 2010 at 1:45 PM, aktestng 
> <[email protected]> wrote:
> > no problem. Can you please help see what I am doing wrong? thanks
>
> > On Aug 10, 1:42 pm, CÃdric Beust â 
> > <[email protected]> wrote:
> > > Ok then you're using @BeforeTest correctly (I can never tell right away
> > but
> > > it's a common error so that's usually my first suggestion).
>
> > > --
> > > CÃdric
>
> > > On Tue, Aug 10, 2010 at 1:27 PM, aktestng 
> > > <[email protected]> wrote:
> > > > Hi Cedric,
>
> > > > Â ÂThanks for the reply. I want the execution just like you explain
> > > > in this thread:
>
> > > >http://groups.google.com/group/testng-users/browse_thread/thread/ec29.
> > ..
>
> > > > <test>
> > > > Â<classes>
> > > > Â Â<class name="A" /> Â<-- contains tests a1() and a2()
> > > > Â Â<class name="B" /> Â <-- contains tests b1() and b2()
> > > > Â</classes>
> > > > </test>
>
> > > > In this case, you will see:
>
> > > > @BeforeTest
> > > > Â@BeforeMethod
> > > > Â Âa1()
> > > > Â@AfterMethod
> > > > Â@BeforeMethod
> > > > Â Âa2()
> > > > Â@AfterMethod
> > > > Â@BeforeMethod
> > > > Â Âb1()
> > > > Â@AfterMethod
> > > > Â@BeforeMethod
> > > > Â Âb22()
> > > > Â@AfterMethod
> > > > @AfterTest
>
> > > > I tried to use the beforeMethod but then its giving me this error:
>
> > > > Failed to invoke @Configuration method
>
> > com.walmart.test.SelNG.mobilewalmart.tests.CommonTest.startSeleniumServer:Selenium
> > > > is already running on port 4444. Or some other service is.
> > > > 13:21:43.126 WARN - Failed to start: [email protected]:4444 for
> > > > the 3 class
>
> > > > I want the setup method to start the selenium server only once and
> > > > then create the selenium only once.
>
> > > > All subsequent classes should use the same server started in
> > > > setupclass and same selenium handle
>
> > > > Please Help
>
> > > > Thanks,
> > > > Amar
>
> > > > On Aug 10, 1:15 pm, CÃdric Beust â 
> > > > <[email protected]> wrote:
> > > > > You probably want to use @BeforeMethod and not @BeforeTest.
>
> > > > > --
> > > > > CÃdric
>
> > > > > On Tue, Aug 10, 2010 at 1:12 PM, aktestng 
> > > > > <[email protected]> wrote:
> > > > > > I have 3 classes in my test. 1 is the setup class. other 2 are 2
> > > > > > features for my website and each have n methods.
>
> > > > > > When I run the first class it runs correctly using the selenium var
> > > > > > but the 2nd complains that there is no instance.
>
> > > > > > Setup Class code:
>
> > > > > > package com.walmart.test.SelNG.mobilewalmart.tests;
>
> > > > > > import org.testng.annotations.*;
> > > > > > import com.thoughtworks.selenium.CommandProcessor;
> > > > > > import com.thoughtworks.selenium.DefaultSelenium;
> > > > > > import com.thoughtworks.selenium.HttpCommandProcessor;
> > > > > > import com.thoughtworks.selenium.Selenium;
> > > > > > import java.io.File;
> > > > > > import com.thoughtworks.selenium.*;
> > > > > > import org.openqa.selenium.server.SeleniumServer;
> > > > > > import org.openqa.selenium.server.RemoteControlConfiguration;
> > > > > > import org.testng.annotations.*;
>
> > > > > > /**
> > > > > > Â* @author : Amar Kale
> > > > > > Â*/
>
> > > > > > public class CommonTest extends SeleneseTestCase {
>
> > > > > > Â Â Â Âpublic static final int waitTimeInSeconds = 50;
> > > > > > Â Âpublic Selenium selenium;
>
> > > > > > Â Âpublic static final String MAX_WAIT_TIME_IN_MS="60000";
> > > > > > Â Âprivate SeleniumServer seleniumServer;
> > > > > > Â Âpublic int amar=12;
>
> > @Parameters({"selenium.host","selenium.port","selenium.browser","__POOLNAME__"})
> > > > > > @BeforeTest(groups = { "abstract"})
> > > > > > public void startSeleniumServer(String host, String port, String
> > > > > > browser , String
> > > > > > _POOLNAME__ ) throws Exception {
> > > > > > Â Â Â ÂSystem.out.println("Starting Selenium Server Method:");
> > > > > > Â Â Â ÂRemoteControlConfiguration rc = new
> > > > RemoteControlConfiguration();
> > > > > > Â Â Â Ârc.setAvoidProxy(true);
> > > > > > Â Â Â Ârc.setPort(4444);
> > > > > > Â Â Â Ârc.setTrustAllSSLCertificates(true);
> > > > > > Â Â Â Ârc.setSingleWindow(false);
> > > > > > Â Â Â Ârc.setReuseBrowserSessions(true);
> > > > > > Â Â Â ÂseleniumServer = new SeleniumServer(rc);
> > > > > > Â Â Â Âselenium = new DefaultSelenium("localhost",
> > > > Integer.parseInt(port),
> > > > > > Â Â Â Â Â Â Â Â Â Â Â Â Â Â Â Âbrowser, "
> > > >http://mobile-vqa3.walmart.com/
> > > > > > ");
> > > > > > Â Â Â ÂSystem.out.println("Starting Selenium Server: - "
> > +selenium);
> > > > > > Â Â Â Â seleniumServer.start();
> > > > > > Â Â Â Â System.out.println("Started Selenium Server: - " );
> > > > > > Â Â Â Â selenium.start();
> > > > > > Â Â Â Â //selenium.setTimeout("600000");
> > > > > > Â Â Â Â selenium.setSpeed("1200");
> > > > > > Â Â Â Â selenium.open("http://mobile-vqa3.walmart.com/";);
> > > > > > Â Â Â Â selenium.windowMaximize();
> > > > > > Â Â Â Â System.out.println("selenium value from StartSelenium
> > method"
> > > > > > +selenium);
> > > > > > }
>
> > > > > > @AfterTest(groups = { "abstract" })
> > > > > > public void stopSeleniumServer(){
> > > > > > Â Â Â Âselenium.close();
> > > > > > Â Âselenium.stop();
> > > > > > Â ÂseleniumServer.stop();
> > > > > > Â Â Â Â}
>
> > > > > > }
>
> > > > > > Class 1: -
>
> > > > > > package com.walmart.test.SelNG.mobilewalmart.tests;
>
> > > > > > import static org.testng.Assert.assertTrue;
> > > > > > import static org.testng.Assert.fail;
> > > > > > import java.lang.Object.*;
> > > > > > import java.io.*;
> > > > > > import org.testng.annotations.*;
> > > > > > import com.thoughtworks.selenium.CommandProcessor;
> > > > > > import com.thoughtworks.selenium.DefaultSelenium;
> > > > > > import com.thoughtworks.selenium.HttpCommandProcessor;
> > > > > > import com.thoughtworks.selenium.Selenium;
>
> > > > > > public class Walmart_Home_Page extends CommonTest{
>
> > > > > > @Test(groups = {"abstract"}, description = "Verify Before Home Page
> > > > > > login")
> > > > > > public void Verify_Login_Page_Title(){
> > > > > > Â Â Â Âtry {
> > > > > > Â Â Â Â Â Â Â ÂSystem.out.println("Inside method Â-
> > > > Verify_Login_Page_Title
> > > > > > ");
> > > > > > Â Â Â Â Â Â Â ÂString Walmart_title = selenium.getTitle();
> > > > > > Â Â Â Â Â Â Â ÂSystem.out.println("Title of the page: "
> > > > +Walmart_title);
> > > > > > Â Â Â Â Â Â Â Â//assertTrue(selenium.getTitle().equals("Please Log
> > > > in!"));
> > > > > > Â Â Â Â Â Â Â Âif (selenium.getTitle().equals("Please Log in!")){
> > > > > > Â Â Â Â Â Â Â Â Â Â Â ÂSystem.out.println("Title of the page: -
> > inside
> > > > if
> > > > > > statement "
> > > > > > +Walmart_title);
> > > > > > Â Â Â Â Â Â Â Â Â Â Â Âselenium.type("username", "wm12");
> > > > > > Â Â Â Â Â Â Â Â Â Â Â Âselenium.type("password", "mobile");
> > > > > > Â Â Â Â Â Â Â Â Â Â Â Âselenium.click("//input[@value='Log In']");
> > > > > > Â Â Â Â Â Â Â Â Â Â Â Âselenium.waitForPageToLoad("60000");
> > > > > > Â Â Â Â Â Â Â Â Â Â Â ÂSystem.out.println("Levaing Method
> > > > > > -Verify_Login_Page_Title " );
> > > > > > Â Â Â Â Â Â Â Â}
> > > > > > Â Â Â Â}catch(Throwable t){
> > > > > > Â Â Â Â Â Â Â Ât.printStackTrace(System.out);
> > > > > > Â Â Â Â Â Â Â Âfail();
> > > > > > Â Â Â Â}
> > > > > > }
>
> > > > > > @Test(groups = {"abstract"}, description = "Verify Walmart Home
> > Page")
> > > > > > public void Verify_Walmart_Page_Title(){
> > > > > > Â Â Â ÂSystem.out.println("Inside method Verify_Walmart_Page_Title
> > ");
> > > > > > Â Â Â ÂString Walmart_title = selenium.getTitle();
> > > > > > Â Â Â ÂSystem.out.println("Title of the page: " +Walmart_title);
>
> > > > > > Â Â Â Â//assertTrue(selenium.getTitle().equals("Please Log in!"));
> > > > > > Â Â Â Âif (selenium.getTitle().equals("Walmart Mobile")){
> > > > > > Â Â Â Â Â Â Â ÂSystem.out.println("Title of the page: -
> > > > > > Verify_Walmart_Page_Title
> > > > > > inside if statement " +Walmart_title);
> > > > > > Â Â Â Â}
> > > > > > Â Â Â ÂSystem.out.println("Levaing Method -
> > Verify_Walmart_Page_Title "
> > > > );
> > > > > > }
>
> > > > > > }
>
> > > > > > Class 3: -
>
> > > > > > package com.walmart.test.SelNG.mobilewalmart.tests;
>
> > > > > > import org.testng.annotations.Test;
> > > > > > import com.thoughtworks.selenium.CommandProcessor;
> > > > > > import com.thoughtworks.selenium.DefaultSelenium;
> > > > > > import com.thoughtworks.selenium.HttpCommandProcessor;
> > > > > > import com.thoughtworks.selenium.Selenium;
> > > > > > import junit.framework.TestSuite;
>
> > > > > > public class Walmart_Login_Page extends CommonTest{
> > > > > > Â ÂSelenium selenium;
>
> > > > > > @Test(groups = {"abstract"}, description = "Verify Login Page for
> > > > > > Walmart Services")
> > > > > > public void Verify_Login_Page_Title(){
>
> > > > > > Â Â Â Â Â Â Â ÂSystem.out.println("Selenium Value from from other
> > > > Class: "
> > > > > > +selenium);
> > > > > > Â Â Â Â Â Â Â ÂSystem.out.println("Inside method
> > Verify_LoginPageTite
> > > > > > ****");
> > > > > > Â Â Â Â Â Â Â Â//System.out.println("Title of the page: value of
> > dummy
> > > > int"
> > > > > > +session.get());
> > > > > > Â Â Â Â Â Â Â ÂSystem.out.println("Title of the page: from home
> > page"
> > > > > > +selenium.getTitle());
> > > > > > Â Â Â Â Â Â Â ÂSystem.out.println("Inside method
> > Verify_LoginPageTite
> > > > End
> > > > > > of
> > > > > > Automation Script");
>
> > > > > > Â Â Â Â Â Â Â Â/*selenium.click("//div[6]/div/div");
> > > > > > Â Â Â Â Â Â Â Âselenium.type("email", 
> > > > > > "mi...-H6WVrsWKVVlWk0Htik3J/[email protected]");
> > > > > > Â Â Â Â Â Â Â Âselenium.type("pwd", "herodevice");
> > > > > > Â Â Â Â Â Â Â Âselenium.click("id2");
> > > > > > Â Â Â Â Â Â Â ÂverifyTrue(selenium.isTextPresent("The e-mail
> > address
> > > > and
> > > > > > password
> > > > > > you entered does not match what we have in our records. Please make
> > > > > > sure that you have correctly entered the e-mail address and
> > password
> > > > > > associated with your account at walmart.com."));
> > > > > > Â Â Â Â Â Â*/
> > > > > > Â Â Â Â}
> > > > > > }
>
> > > > > > At the start of the Class 3 - Verify_Login_Page_Title I am getting
> > the
> > > > > > java null pointer exception
>
> > > > > > Can somebody please help me with this and let me know why this is
> > > > > > happeneing?
>
> > > > > > Thanks in Advance
>
> > > > > > Amar
>
> > > > > > --
> > > > > > You received this message because you are subscribed to the Google
> > > > Groups
> > > > > > "testng-users" group.
> > > > > > To post to this group, send email to [email protected]
> > .
> > > > > > To unsubscribe from this group, send email to
> > > > > > testng-users+unsubscribe-/[email protected]<testng-users%2Bunsubscribe-/[email protected]>
> > <testng-users%2Bunsubscribe-/[email protected]<testng-users%252Bunsubscribe-/[email protected]>
>
> > > > <testng-users%2Bunsubscribe-/[email protected]<testng-users%252Bunsubscribe-/[email protected]>
> > <testng-users%252Bunsubscribe-/[email protected]<testng-users%25252Bunsubscribe-/[email protected]>
>
> > > > > > .
> > > > > > For more options, visit this group at
> > > > > >http://groups.google.com/group/testng-users?hl=en.
>
> > > > > --
> > > > > CÃdric
>
> > > > --
> > > > You received this message because you are subscribed to the Google
> > Groups
> > > > "testng-users" group.
> > > > To post to this group, send email to 
> > > > testng-users-/JYPxA39Uh5TLH3MbocFF+G/[email protected]
> > > > To unsubscribe from this group, send email to
> > > > testng-users+unsubscribe-/[email protected]<testng-users%[email protected]>
> > <testng-users%2Bunsubscribe-/[email protected]<testng-users%252Bunsubscribe-/[email protected]>
>
> > > > .
> > > > For more options, visit this group at
> > > >http://groups.google.com/group/testng-users?hl=en.
>
> > > --
> > > CÃdric
>
> > --
> > You received this message because you are subscribed to the Google Groups
> > "testng-users" group.
> > To post to this group, send email to 
> > testng-users-/JYPxA39Uh5TLH3MbocFF+G/[email protected]
> > To unsubscribe from this group, send email to
> > testng-users+unsubscribe-/[email protected]<testng-users%[email protected]>
> > .
> > For more options, visit this group at
> >http://groups.google.com/group/testng-users?hl=en.
>
> --
> CÃdric
-- 
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