### Question:
CreditorIdPopulator extends AbstractOrderAwarePaymentPopulator { @Override public void doPopulate(AbstractOrderModel source, Payment target) throws ConversionException { target.setCreditorId(getCreditroId(source)); }  @Override void doPopulate(AbstractOrderModel source, Payment target); @Required void setWirecardPaymentConfigurationService(WirecardPaymentConfigurationService wirecardPaymentConfigurationService);  }### Answer:
@Test public void populateTest() { Payment payment = new Payment(); creditorIdPopulator.doPopulate(abstractOrderModel, payment); assertEquals("The Creditor Id is not correct", "1234567890", payment.getCreditorId()); }