Sample automation script to log in then log out of http://flipkart.com. Using the https://github.com/ddavison/getting-started-with-selenium framework.

TestFlipKart.java

@Config(url="http://flipkart.com", browser=Browser.FIREFOX)
public class TestFlipKart extends AutomationTest {
    @Test
    public void testLoginLogout() {
        String username = "<username>";
        String password = "<password>";
        
        click(By.cssSelector("a[href*='/login']"))
        .setText(By.cssSelector("input[name='email']"), username)
        .setText(By.cssSelector("input[name='password']"), password)
        .click(By.cssSelector("input[type='submit'][value='Login']"))
        
        .validatePresent(By.cssSelector("li.greeting-link > a"))
        
        .hoverOver(By.cssSelector("li.greeting-link > a"))
        
        .click(By.cssSelector("ul.account-dropdown a[href*='/logout']"))
        
        // should be logged out now.
        .validatePresent(By.cssSelector("a[href*='/login']"));
    }
}