How to fail test case in TestNG with Selenium

Q. How do I fail or report a failed test case?
Ans. You can use Assert statement to report a failure.

              org.testng.Assert.fail("Test Case Failed!");

you can use Assert in If Else statement to check for failure, quick example below, I am using selenium code snippet here!  

   

  if(convert.contains(blah)) 

 {

    Reporter.log("Pass");

 }

   else

 {

    org.testng.Assert.fail("Fail");

 }