What is Test Suite?

A Test Suite is a grouping unit test cases together and running it. In JUnit, both @RunWith and @Suite annotations are used to run the suite test.

We will show you how to create and run a Suite. We will create two test classes TestOne and TestTwo.

First create a program with class "TestOne" as below:

import org.junit.Test;
public class TestOne {
	@Test
	public void testcaseOne(){
		System.out.println("Hello im in test case one");
	}
}

Now Create another program with class "TestTwo" as below:

import org.junit.Test;
public class TestTwo {
	@Test
	public void testcaseTwo(){
		System.out.println("Hello im in test case two");
	}
}

Now for Test Suite Create a Java Class called "TestSuite"
Next add @RunWith(Suite.class)
And also Add the reference to Junit test classes using @Suite.SuiteClasses Annotation.

The code should look like below:

import org.junit.runner.RunWith;
import org.junit.runners.Suite;

@RunWith(Suite.class)
@Suite.SuiteClasses({
	TestOne.class,TestTwo.class})

public class TestSuite{
}

Now run the Test Suite class as "Run as Test Suite", The output for the below program should look like below:
OutPut:
Hello im in test case one
Hello im in test case two