In testng.xml file we can specify multiple name (s) which needs to be executed.

In a project there may be many classes, but we want to execute only the selected classes.

We can pass class names of multiple packages also. If say suppose, we want to execute two classes in one package and other class from some other package.

The below is the example testng.xml which will execute the class names that are specified.

Example:

<?xml version="1.0" encoding="UTF-8"?>
<suite name="example suite 1" verbose="1" >
  <test name="Regression suite 1" >
    <classes>
      <class name="com.first.example.demoOne"/>
      <class name="com.first.example.demoTwo"/>
      <class name="com.second.example.demoThree"/>
    </classes>
 </test>
</suite>

We need to specify the class names along with packages in between the classes tags.

In the above xml, we have specified class name as “com.first.example.demoOne” and “com.first.example.demoOne” which are in “com.first.example” package. And class name demoThree is in package “com.second.example.”

All the classes specified in the xml will get executes which have TestNG annotations.

Below are the two example classes under “com.first.example” package which is executed.

Package: “com.first.example”
Classname: demoOne

package com.first.example;
import org.testng.annotations.Test;
public class demoOne {
	@Test
	public void firstTestCase()
	{
		System.out.println("im in first test case from demoOne Class");
	}
	
	@Test
	public void secondTestCase()
	{
		System.out.println("im in second test case from demoOne Class");
	}
}

Classname: demoTwo

package com.first.example;
import org.testng.annotations.Test;
public class demoTwo {
	@Test
	public void firstTestCase()
	{
		System.out.println("im in first test case from demoTwo Class");
	}
	
	@Test
	public void secondTestCase()
	{
		System.out.println("im in second test case from demoTwo Class");
	}
}

Package: “com.second.example”
Classname: demoThree

package com.second.example;
import org.testng.annotations.Test;
public class demoThree {
	@Test
	public void firstTestCase()
	{
		System.out.println("im in first test case from demoThree Class");
	}
	@Test
	public void secondTestCase()
	{
		System.out.println("im in second test case from demoThree Class");
	}
}

We need to run the testng.xml file. (Right click on testng.xml and select Run as ‘TestNG Suite”)
The below is the output for the above example code.