junit4 - Junit testing for database conection -

is there way test below code.here connecting database jndi.i new mockito , not getting way test same.

    @suppresswarnings("unused") public connection getjndiconnection() {     connection result = null;     try {         initialcontext initialcontext = new initialcontext();         if (initialcontext == null) {             logger.info("jndi problem. cannot initialcontext.");         }         datasource datasource = (datasource) initialcontext.lookup(jndiname);         if (datasource != null) {             result = datasource.getconnection();         } else {             logger.info("failed lookup datasource.");         }     } catch (namingexception ex) {         logger.error("cannot connection: " + ex);     } catch (sqlexception ex) {         logger.error("cannot connection: " + ex);     }     return result; } 

of course, can it, think should read documentation yourself. main points here is:

initialcontext initialcontext = mock(initialcontext.class); datasource datasource = mock(datasource.class); connection expected = mock(connection.class);  whennew(initialcontext.class).withnoarguments().thenreturn(initialcontext); when(initialcontext.lookup(jndiname)).thenreturn(datasource); when(initialcontext.getconnection()).thenreturn(connection);  connection result = intatnceofcalss.getjndiconnection();  assertsame("should equals", expected, result); 

also should use powermock mock constructors , static methods. have deal logger, add code:

@beforeclass public static void setupclass() {     mockstatic(loggerfactory.class);     logger logger = mock(logger.class);     when(loggerfactory.getlogger(applysqlfileifexistschange.class)).thenreturn(logger); } 

don't forget annotations:

@runwith(powermockrunner.class) @preparefortest({loggerfactory.class}) 

try read doc http://site.mockito.org/mockito/docs/current/org/mockito/mockito.html