### Question:
HibernateServiceDefinitionDao extends HibernateDaoSupport implements ServiceDefinitionDao { public ServiceDefinition getServiceDefinition(String key) { LOG.debug("get ServiceDefinition(key = \"" + key + "\")"); ServiceDefinition serviceDefinition = (ServiceDefinition) getHibernateTemplate().get( ServiceDefinition.class, key); LOG.debug("get ServiceDefinition(key = \"" + key + "\") = " + serviceDefinition); return serviceDefinition; }  ServiceDefinition getServiceDefinition(String key); @SuppressWarnings("unchecked") ServiceDefinition getServiceDefinition(String systemKey,
            String serviceId); @SuppressWarnings("unchecked") ServiceDefinition getServiceDefinition(String organizationId,
            String systemId, String serviceId);  }### Answer:
@Test public void testReadSucceeds() throws Exception { ServiceDefinition serviceA0_0 = dao.getServiceDefinition("00000000", "00000000", "00000000"); assertNotNull(serviceA0_0); assertTrue(serviceA0_0.isValid()); assertEquals("00000000", serviceA0_0.getId()); assertEquals("Service A0-0", serviceA0_0.getName()); assertEquals("M1", serviceA0_0.getRequestMessageTypeId()); assertEquals("M2", serviceA0_0.getResponseMessageTypeId()); assertNull(serviceA0_0.getServiceProviderBeanId()); assertEquals("00000000", serviceA0_0.getSystem().getId()); }
@Test public void testReadFails() throws Exception { ServiceDefinition service = dao.getServiceDefinition("00000000", "00000000", "00000003"); assertNull(service); }