Launching application from one class and using it in another class(Help me in Learning Selenium) - selenium-rc

Question

Launching Application from One Class and using it in another class.
Hi All,
I am new to selenium and Java. I just trying to work on selenium. I am
facing some problem. I wanted to create a class in which I just want
to launch application(say google.com), and the next other tasks like
executing test cases has to be done by other class. Can this be done,
Here I am pasting my code. Help me please in understanding this.
Here are my two classes
This class Launches Google on browser.
public class GoogleTest extends SeleneseTestCase
{
private static Selenium selenium;
#BeforeClass
public static void setUpBeforeClass() throws Exception
{
selenium = new DefaultSelenium("localhost", 4444, "*firefox", "http://www.google.com");
selenium.start();
selenium.windowMaximize();
}
#Test
public void testSearch() throws InterruptedException
{
selenium.open("http://www.google.com");
selenium.waitForPageToLoad("50000");
}
#AfterClass
public static void tearDownAfterClass() throws Exception {
selenium.stop();
}
}
This class should type in search field
public class FirstSeleniumTest extends GoogleTest
{ private static Selenium selenium;
#Test
public void testSearch()
{
selenium.type("q", "Selenium OpenQA");
selenium.waitForPageToLoad("50000");
}
}
When I run "GoogleTest" first class it runs perfectly, when I try to
run "FirstSeleniumTest" second class it gives error like this. FAILED:
testSearch on null(com.dev.rao.FirstSeleniumTest)
java.lang.NullPointerException at
com.dev.rao.FirstSeleniumTest.testSearch(FirstSeleniumTest.java:18)

Answer 1

Its normally difficult to do what you are trying to achieve. That's why new Selenium instance is better per test. and in the longer run easy to debug. But as per what you are trying I see two issues:
1.) selenium.stop() should be in the second script not the first. If you kill the instance how can it be extended in 2nd test.
2.) Declaring Selenium twice. (I think probably Selenium instance in 2nd test should also extend from first test.)