The date and time value is displayed in the nls_date_format. If you want to display date variables with time fraction, you can simply modify your test script like this:
Code
declare
v_date date:=sysdate;
begin
-- Modify the nls_date_format for the session of the test script
dbms_session.set_nls('nls_date_format','''DD-MM-YYYY HH24:MI:SS''');
-- From here on dates are displayed with time fraction
dbms_output.put_line(v_date);
end;