The “Parameterized Test” means vary parameter value for unit test. In JUnit, both @RunWith and @Parameter annotation are use to provide parameter value for unit test, @Parameters have to return List[], and the parameter will pass into class constructor as argument.

import java.util.Arrays;
import java.util.Collection;
import org.junit.Test;
import org.junit.runner.RunWith;
import org.junit.runners.Parameterized;
import org.junit.runners.Parameterized.Parameters;
 * JUnit Parameterized Test
 * @author mkyong
@RunWith(value = Parameterized.class)
public class JunitTest6 {
	 private int number;
	 public JunitTest6(int number) {
	    this.number = number;
	 public static Collection<Object[]> data() {
	   Object[][] data = new Object[][] { { 1 }, { 2 }, { 3 }, { 4 } };
	   return Arrays.asList(data);
	 public void pushTest() {
	   System.out.println("Parameterized Number is : " + number);


Parameterized Number is : 1
Parameterized Number is : 2
Parameterized Number is : 3
Parameterized Number is : 4

It has many limitations here; you have to follow the “JUnit” way to declare the parameter, and the parameter has to pass into constructor in order to initialize the class member as parameter value for testing. The return type of parameter class is “List []”, data type has been limited to String or primitive value.

Tags :
Founder of and, love Java and open source stuff. Follow him on Twitter, or befriend him on Facebook or Google Plus. If you like my tutorials, consider making a donation to this charity, thanks.

Related Posts

Popular Posts