package fakes type MockHeaderSyncBlockRetriever struct { FirstBlock int64 FirstBlockErr error } func (retriever *MockHeaderSyncBlockRetriever) RetrieveFirstBlock() (int64, error) { return retriever.FirstBlock, retriever.FirstBlockErr } func (retriever *MockHeaderSyncBlockRetriever) RetrieveMostRecentBlock() (int64, error) { return 0, nil }