java - "Could not initialize proxy - no Session" -

i'm getting following error message when trying run junit test via spring, jpa , java:

"could not initialize proxy - no session"

the tests domain class (let's call firstdomainclass). firstdomainclass class has number of fields, including 1 linked through domain class in many-to-one relationship:

@manytoone(fetch = fetchtype.eager) @joincolumn(name = "second_domain_class") private seconddomainclass seconddomainclass; 

i found had use fetchtype.eager because otherwise seconddomainclass object not populated when retrieved instance of firstdomainclass.

the dao implementation class firstdomainclass has each method prefixed @transactional annotation:

@transactional(propagation = propagation.required, readonly = false) public void store(firstdomainclass firstdomainclass) {     entitymanager.persist(firstdomainclass); } 

i use spring wire together, including bean definition of dao implementation @autowired junit class. test class creates data in database via @before method , clears out afterwards @after method.

the class prefixed with

@runwith(springjunit4classrunner.class) @transactionconfiguration(defaultrollback = false) @contextconfiguration(locations = { ... list of config files... }) 

... , test looks this:

@test public void teststore() {     seconddomainclass second = seconddomainclassdao.get(... object created in @before method... );      firstdomainclass first = new firstdomainclass();     first.setseconddomainclass(second);     ... other setting...     firstdomainclassdao.store(first);      firstdomainclass newfirst = firstdomainclassdao.get(... criteria retrieve object created store()... );      ... assertions here... } 

when test runs part of automated build process, fails message detailed above. stacktrace identifies error occurs when primary key of seconddomainclass object accessed.

versions: java 1.7 / junit 4.10 / jpa 2 / spring 3.2.2 / hibernate 4.1.7

many in advance assistance.