Identified xpath is not working in testng,if the xpath is in first line of the method logout. the same xpath is working without using testng

Question

Identified xpath is not working in testng, if the xpath is in first line of the method logout. The same xpath is working without using testng.

I am getting error:

Unable to locate element: {"method":"xpath","selector":"//*[@class='level1 menu static']/li[2]/a"}

Program is below:

@Test
public void login(){
driver1.findElement(By.id("txtUsername")).sendKeys("***");
driver1.findElement(By.id("txtPassword")).sendKeys("***");
driver1.findElement(By.id("btnLogin")).click();
System.out.println("Logged into the application");
}       

@Test
public void Logout() throws InterruptedException 
{   
    WebElement l =driver1.findElement(By.xpath("//*[@class='level1 menu static']/li[2]/a"));
            act.moveToElement(l).perform();                 
   driver1.findElement(By.xpath("//*[@class='level1 menu static']/li[2]/ul/li[1]/a")).click();    
                }}

Please help me to identify the problem

Answer 1

Firstly, you should make sure the tests are executed in the correct order. This can be achieved in several ways:

1. Implicitly set test method order in testng.xml file like this:

   <test name="Login/logout test" preserve-order="true">
       <classes>
           <class name="com.test.LoginLogout">
               <methods>
                   <include name="login" />
                   <include name="Logout" />
               </methods>
           </class>
       </classes>
   </test>
   

2. Use additional attributes of the @Test annotation:

   @Test(dependsOnMethods="login")
   public void Logout() throws InterruptedException
   

Secondly, you should make sure the element is accessible when the logout test is executed. This can be achieved, using some impementation of wait (see this SO answer for some examples), like:

WebDriverWait wait = new WebDriverWait(driver1, timeoutInSeconds);    
wait.until(ExpectedConditions.elementToBeClickable(By.xpath("//*[@class='level1 menu static']/li[2]/a"));