How to use

ContactsLocalGateway

in

me.panavtec.cleancontacts.domain.model

 @Override public List<Contact> obtain() {
  return localGateway.obtainContacts();
 }
};

 @Override public void store(List<Contact> contacts) {
  localGateway.persist(contacts);
 }
};

@Test public void update_cache_when_hit_network() throws Exception {
 when(localGateway.obtainContacts()).thenReturn(EMPTY_LIST);
 when(networkGateway.obtainContacts()).thenReturn(CONTACTS);
 interactor.call();
 verify(localGateway).persist(CONTACTS);
}

 @Override public InteractorResponse<Contact> call() {
  try {
   return new InteractorResponse<>(localGateway.obtain(contactMd5));
  } catch (LocalException e) {
   return new InteractorResponse<>(new GetContactError());
  }
 }
}

@Test public void hit_network_when_local_is_empty() {
 when(localGateway.obtainContacts()).thenReturn(EMPTY_LIST);
 interactor.call();
 verify(networkGateway).obtainContacts();
}

@Test public void return_local_contacts_when_local_storage_is_populated() {
 when(localGateway.obtainContacts()).thenReturn(CONTACTS);
 InteractorResponse<List<Contact>> response = interactor.call();
 assertThatResponseHasResult(response);
}

@Test public void return_networks_contacts_when_network_success() {
 when(localGateway.obtainContacts()).thenReturn(EMPTY_LIST);
 when(networkGateway.obtainContacts()).thenReturn(CONTACTS);
 InteractorResponse<List<Contact>> response = interactor.call();
 assertThatResponseHasResult(response);
}

@Test public void hit_network_when_local_fails() {
 when(localGateway.obtainContacts()).thenThrow(new LocalException());
 interactor.call();
 verify(networkGateway).obtainContacts();
}

@Test public void return_an_error_when_network_fails() {
 when(localGateway.obtainContacts()).thenReturn(EMPTY_LIST);
 when(networkGateway.obtainContacts()).thenThrow(new NetworkException());
 InteractorResponse<List<Contact>> result = interactor.call();
 assertThatResponseHasError(result);
}