@Stateless
public class MyBean {
    *public int addNumbers(int numberA, int numberB) {
        return numberA + numberB;
    }*
}

@Test
public void testAddNumbers() throws Exception {
    System.out.println("addNumbers");
    *int numberA = 1;
    int numberB = 2;*
    EJBContainer container = javax.ejb.embeddable.EJBContainer.createEJBContainer();
    MyBean instance = (MyBean)container.getContext().lookup("java:global/classes/MyBean");
    *int expResult = 3;*
    int result = instance.addNumbers(numberA, numberB);
    assertEquals(expResult, result);
    container.close();
}

Testsuite: bean.MyBeanTest
addNumbers
...
Tests run: 1, Failures: 0, Errors: 0, Time elapsed: 31.272 sec

------------- Standard Output ---------------
addNumbers
...
------------- ---------------- ---------------
test-report:
test:
BUILD SUCCESSFUL (total time: 35 seconds)

@Test
public void testAddNumbers() throws Exception {
    System.out.println("addNumbers");
    int numberA = 1;
    int numberB = 2;

    // Create a properties map to pass to the embeddable container:
    *Map<String, Object> properties = new HashMap<String, Object>();*
    // Use the MODULES property to specify the set of modules to be initialized,
    // in this case a java.io.File
    *properties.put(EJBContainer.MODULES, new File("build/jar"));*

    // Create the container instance, passing it the properties map:
    EJBContainer container = javax.ejb.embeddable.EJBContainer.createEJBContainer(*properties*);

    // Create the instance using the container context to look up the bean
    // in the directory that contains the built classes
    MyBean instance = (MyBean) container.getContext().lookup("java:global/classes/MyBean");

    int expResult = 3;

    // Invoke the addNumbers method on the bean instance:
    int result = instance.addNumbers(numberA, numberB);

    assertEquals(expResult, result);

    // Close the embeddable container:
    container.close();
}

private static EJBContainer container;

@BeforeClass
public static void setUpClass() *throws Exception* {
    *Map<String, Object> properties = new HashMap<String, Object>();
    properties.put(EJBContainer.MODULES, new File("build/jar"));
    container = EJBContainer.createEJBContainer(properties);
    System.out.println("Opening the container");*
}

@AfterClass
public static void tearDownClass() *throws Exception* {
    *container.close();
    System.out.println("Closing the container");*
}

public class MyBeanTest {
    private static EJBContainer container;

    public MyBeanTest() {
    }

    @BeforeClass
    public static void setUpClass() throws Exception {
        Map<String, Object> properties = new HashMap<String, Object>();
        properties.put(EJBContainer.MODULES, new File("build/jar"));
        container = EJBContainer.createEJBContainer(properties);
        System.out.println("Opening the container");
    }

    @AfterClass
    public static void tearDownClass() throws Exception {
        container.close();
        System.out.println("Closing the container");
    }

    @Before
    public void setUp() {
    }

    @After
    public void tearDown() {
    }

    /**
     * Test of addNumbers method, of class MyBean.
     */
    @Test
    public void testAddNumbers() throws Exception {
        System.out.println("addNumbers");
        int numberA = 1;
        int numberB = 2;

        // Create the instance using the container context to look up the bean
        // in the directory that contains the built classes
        MyBean instance = (MyBean) container.getContext().lookup("java:global/classes/MyBean");

        int expResult = 3;

        // Invoke the addNumbers method on the bean instance:
        int result = instance.addNumbers(numberA, numberB);

        assertEquals(expResult, result);
    }
}

private String name;

public SimpleEntity(int id) {
    this.id = id;
    name = "Entity number " + id + " created at " + new Date();
}

@Entity
*@NamedQueries({@NamedQuery(name = "SimpleEntity.findAll", query = "select e from SimpleEntity e")})*
public class SimpleEntity implements Serializable {

package bean;

import java.io.Serializable;
import java.util.Date;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedQueries;
import javax.persistence.NamedQuery;


@Entity
@NamedQueries({@NamedQuery(name = "SimpleEntity.findAll", query = "select e from SimpleEntity e")})
public class SimpleEntity implements Serializable {
    private static final long serialVersionUID = 1L;
    @Id
    @GeneratedValue(strategy = GenerationType.AUTO)
    private int id;

    private String name;

    public SimpleEntity() {
    }

    public String getName() {
        return name;
    }

    public void setName(String name) {
        this.name = name;
    }

    public SimpleEntity(int id) {
        this.id = id;
        name = "Entity number " + id + " created at " + new Date();
    }



    ...

}

@PersistenceContext(unitName="WebAppJUnitPU")
private EntityManager em;

@PermitAll
public int verify() {
    String result = null;
    Query q = em.createNamedQuery("SimpleEntity.findAll");
    Collection entities = q.getResultList();
    int s = entities.size();
    for (Object o : entities) {
        SimpleEntity se = (SimpleEntity)o;
        System.out.println("Found: " + se.getName());
    }

    return s;
}

@PermitAll
public void insert(int num) {
    for (int i = 1; i <= num; i++) {
        System.out.println("Inserting # " + i);
        SimpleEntity e = new SimpleEntity(i);
        em.persist(e);
    }
}

@Test
public void testInsert() throws Exception {

    // Lookup the EJB
    System.out.println("Looking up EJB...");
    MyBean instance = (MyBean) container.getContext().lookup("java:global/classes/MyBean");

    System.out.println("Inserting entities...");
    instance.insert(5);
    int res = instance.verify();
    System.out.println("JPA call returned: " + res);
    System.out.println("Done calling EJB");

    Assert.assertTrue("Unexpected number of entities", (res == 5));
    System.out.println("..........SUCCESSFULLY finished embedded test");
}