How to run unit test with Maven

To run unit test via Maven, issue this command :

mvn test

This will run the entire unit tests in your project.

Case Study

Create two unit tests and run it via Maven. See a simple Java class for testing :

package com.mkyong.core;
public class App {
	public static void main(String[] args) {
	public static String getHelloWorld() {
		return "Hello World";
	public static String getHelloWorld2() {
		return "Hello World 2";

Unit Test 1

Unit test for getHelloWorld() method.

package com.mkyong.core;
import junit.framework.Assert;
import org.junit.Test;
public class TestApp1 {
	public void testPrintHelloWorld() {
		Assert.assertEquals(App.getHelloWorld(), "Hello World");

Unit Test 2

Unit test for getHelloWorld2() method.

package com.mkyong.core;
import junit.framework.Assert;
import org.junit.Test;
public class TestApp2 {
	public void testPrintHelloWorld2() {
		Assert.assertEquals(App.getHelloWorld2(), "Hello World 2");

Run Unit Test

See below examples to run unit test with Maven.

Example 1
To run the entire unit test (TestApp1 and TestApp2), issue this command :

mvn test

Example 2
To run single test (TestApp1), issue this command :

mvn -Dtest=TestApp1 test

Example 3
To run single test (TestApp2), issue this command :

mvn -Dtest=TestApp2 test
For more “mvn test” examples, refer to this maven-test plugin documentation.
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  • Vishal N

    Earlier my projects were having Junit test in source code only as I am using ant.

    Now we have shifted to Maven. Can you tell me how can i run the junit test which are not test test dir but in main dir?

  • Ibo

    it is really wonderfull. but i have a problem
    [INFO] Reactor Summary:
    [INFO] TestParent …………………………………. SUCCESS [0.012s]
    [INFO] Test1 ……………………………………… SUCCESS [4.910s]
    [INFO] Test2 ……………………………………… SUCCESS [0.571s]

    cd/\TestParent> mvn test
    result Tests run: 1, Failures: 0, Errors: 0, Skipped: 0
    but i have
    more test functions,
    test1 class i have more than 3 funtions tests
    and Test class2 I hve 6 Tests,
    when I do like this , cd parent/cd test1/ mvn test.
    only 1 Function run, other 5 not,
    when i do with spesific class like this

    mvn -Dtest=test3 test ( 6 funtions)
    it is ok,., it runs all functions

    can u explain more please ;

  • Mukesh

    how to use the Maven in Spring MVC 3.0, Hibernate 3.0 project? what’s the main need to use Maven in string mvc + hibernate based project?

  • Uma

    I have tried to run single unit test case using below command but it is not working
    mvn -Dtest=TestApp2 test

    Is it works for only Maven 2.0 ? I am using Maven 3.0.4 .
    Appreciate your help.

    Thanks ,

  • JAY

    Thanks a lot. The example with the syntax saved my time..

  • ScalaGirl

    I would like to know if i can import Maven 3 projects and run goals in the community version of intellij or do I need to use Maven 2 for this?

    I would appreciate some advise on the most recommended way to use Maven within Intellij. Thanks for all your insightful tutorials.

  • Dmytro

    According to the assertEquals() API ( the first argument is an expected value, the second is an actual one.
    The example has incorrect arguments order.