entityManager valor null

Programação Java
#1

Pessoal alguem pode me ajudar com problema de injeção do spring?
Ao executar o teste de uma classe esta retornando null para o entityManager.

Segue a arquiterura
NetBeans 6.5
Spring 2.5.6
Hibernate 3
MySql

ApplicationContext.xml

<?xml version="1.0" encoding="UTF-8"?>
<beans xmlns="http://www.springframework.org/schema/beans"
       xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
       xmlns:tx="http://www.springframework.org/schema/tx"
       xsi:schemaLocation="http://www.springframework.org/schema/beans http://www.springframework.org/schema/beans/spring-beans-2.5.xsd
       http://www.springframework.org/schema/tx http://www.springframework.org/schema/tx/spring-tx-2.5.xsd">

    <bean id="entityManagerFactory" class="org.springframework.orm.jpa.LocalEntityManagerFactoryBean">
        <property name="persistenceUnitName" value="BovespaPU" />
    </bean>

    <!--  Classe responsável pela injeção do EntityManager nas classes que usam a anotação @PersistenceContext  -->
    <bean class="org.springframework.orm.jpa.support.PersistenceAnnotationBeanPostProcessor" />

    <bean id="transactionManager" class="org.springframework.orm.jpa.JpaTransactionManager">
        <property name="entityManagerFactory" ref="entityManagerFactory" />
    </bean>

    <tx:annotation-driven transaction-manager="transactionManager" proxy-target-class="false" />

    <bean id="tipoDao" class="br.com.bovespa.dao.imp.TipoDaoImp">
        <constructor-arg ref="entityManagerFactory"></constructor-arg>
    </bean>

</beans>

persistence.xml

<?xml version="1.0" encoding="UTF-8"?>
<persistence version="1.0" xmlns="http://java.sun.com/xml/ns/persistence" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://java.sun.com/xml/ns/persistence http://java.sun.com/xml/ns/persistence/persistence_1_0.xsd">

    <persistence-unit name="BovespaPU" transaction-type="RESOURCE_LOCAL">
        <provider>org.hibernate.ejb.HibernatePersistence</provider>
        <class>br.com.bovespa.entities.Tipo</class>
        
        <properties>
            <property name="hibernate.dialect" value="org.hibernate.dialect.MySQL5Dialect" />
            <property name="transaction.factory_class" value="org.hibernate.transaction.jdbctransactionfactory" />
            <property name="hibernate.connection.username" value="username"/>
            <property name="hibernate.connection.driver_class" value="com.mysql.jdbc.Driver"/>
            <property name="hibernate.connection.password" value="123456"/>
            <property name="hibernate.connection.url" value="jdbc:mysql://hots/banco"/>
            <property name="hibernate.cache.provider_class" value="org.hibernate.cache.NoCacheProvider"/>
        </properties>
    </persistence-unit>
</persistence>

TipoDaoImpTest.java

@RunWith(SpringJUnit4ClassRunner.class)
@ContextConfiguration(locations = {"classpath:**/applicationContext*.xml"})
@TestExecutionListeners({})
public class TipoDaoImpTest {

    private TipoDaoImp tipoDao;
    private Integer id = 1;

    public TipoDaoImpTest() {
    }

    @Test
    public void testSalvar() {
        Tipo tipo = null;
        tipo = getTipoDao().salvar(getTipo());
        assertNotNull(tipo);
        assertEquals(id, tipo.getId());
        assertEquals("Teste", tipo.getNome());
    }

Trechos da classe
DaoGenericoImp.java

@Repository
public class DaoGenericoImp<T, ID extends Serializable> implements DaoGenerico<T, ID> {

    @PersistenceContext
    private EntityManager entityManager;

    gets e sets omitidos

    @Override
    @Transactional(readOnly = false, propagation = Propagation.REQUIRED)
    public T salvar(T object) {
        try {
            entityManager.persist(object);
            entityManager.getTransaction().commit();
            return object;
        } finally {
            if (entityManager != null) {
                entityManager.close();
            }
        }
    }

sou novato e desde já peço desculpas por falhas grosseiras…
Obrigado

#2

ninguem tem ideia do que seja?
Abraços

#3