Spring: not a managed type - separate test project

Initially I built a Maven-Spring application with test cases. It worked well and all tests did pass. But now I have a separate maven project for tests and moved the test classes and the spring xml configuration files that project. I have added the main spring project as dependency.

I suppose the test project doesn't load the list of values defined in "packagesToScan" property in db-context.xml. Could anyone please help me find the error?

<!-- Entity Manager -->
<bean id="entityManagerFactory"
    class="org.springframework.orm.jpa.LocalContainerEntityManagerFactoryBean">
    <property name="dataSource" ref="dataSource" />
    <property name="persistenceUnitName" value="m-entrevista" />
    <property name="packagesToScan">
        <list>
             <value>{com.packagename}</value>
        </list>
    </property>
</bean>

The project structure looks like this.

Spring test project

Main spring project

When I run a test, it throws an IllegalArgumentException.