空指针异常，同时使用TestNG

Question

执行测试//我试图通过用TestNG

      package com.xyz.ngp.selenium; 

      import org.testng.annotations.*; 
      import javax.swing.*; 
      import com.thoughtworks.selenium.SeleneseTestNgHelper; 

      public class Grouping extends SeleneseTestNgHelper { 

       @BeforeGroups (groups = {"smoke"}) 
       public void oneTimeSetUp() {   
        try {   
         String st="we are in BeforeGroups"; 
         JOptionPane.showMessageDialog(null,st); 
         // scroll down to the bottom to see justprintsomething. 
         justprintsomething(); 
        } catch (Exception e) { 
         e.printStackTrace(); 
        }  
       } 

       @Test(groups = {"smoke"}) 
       public void test1() throws Exception { 
        String st="you wanted to execute smoke group"; 
        JOptionPane.showMessageDialog(null,st); 
       } 

       @Test(groups = {"functional"}) 
       public void test2() throws Exception { 
        String st="you wanted to execute : either (functional) or this test: (test2)"; 
        JOptionPane.showMessageDialog(null,st); 
       } 

       @Test(groups = {"test3"}) 
       public void test3() throws Exception { 
        String st="you wanted to execute : this test: (test3)"; 
        JOptionPane.showMessageDialog(null,st); 
       } 

       //@BeforeMethod (groups = "smoke") //do i need this beforegroups here? 
       public void justprintsomething() throws Exception {   
        try {   
         // it gets printed 
         String st="inside justprintsomething going to selenium.open"; 
         JOptionPane.showMessageDialog(null,st); 
         // if i comment out the below line code works fine 
         selenium.open("http://www.google.com/"); 
        } catch (Exception e) { 
         e.printStackTrace(); 
        }  
       } 

      } 

将它们分组执行测试用例//我得到空指针异常错误只是selenium.open之前。

Answer 1

您从未初始化硒对象。