To explain this, i take gazelle-proxy-ejb as example.

Frist of all, you need to create a class which contains your tests in src/test/java.

In this class you must create methods which execute your tests with @Test above your methods.

After, you nedd to create a class named AllTests.java in which you add @SuiteClasses({ YourTestsClass.class }):

 To finish, you open pom.xml and add maven-surefire-plugin like this :

<plugin>
	<groupId>org.apache.maven.plugins</groupId>
	<artifactId>maven-surfire-plugin</artifactId>
	<version>2.16</version>
	<configuration>
		<forkMode>once</forkMode>
		<argLine>-enableassertions</argLine>
	</configuration>
</plugin>

Your tests will be executed when you launch mvn clean package or mvn test