BulkMutationClassicApi implements BulkMutationWrapper { @Override public void sendUnsent() { delegate.sendUnsent(); } BulkMutationClassicApi(@Nonnull BulkMutation delegate); @Override ApiFuture<Void> add(RowMutationEntry rowMutation); @Override void sendUnsent(); @Override void flush(); @Override void close();  }
@Test public void testSendUnsent() { doNothing().when(mockDelegate).sendUnsent(); bulkMutationWrapper.sendUnsent(); verify(mockDelegate).sendUnsent(); }