UserJpaController service = Mockito.mock(UserJpaController.class);
Mockito.when(service.findUserEntities()).thenReturn(mockList);
*/
myServlet = new LoginServlet();
try {
myServlet.processRequest(requestMock, responseMock);
} catch (IOException ex) {
Logger.getLogger(LoginServletTest.class.getName()).log(Level.SEVERE, null, ex);
}