content: /**
   * Copyright 2020 Alibaba Group Holding Limited.
   *
   * <p>Licensed under the Apache License, Version 2.0 (the "License"); you may not use this file
   * except in compliance with the License. You may obtain a copy of the License at
   *
   * <p>http://www.apache.org/licenses/LICENSE-2.0
   *
   * <p>Unless required by applicable law or agreed to in writing, software distributed under the
   * License is distributed on an "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either
   * express or implied. See the License for the specific language governing permissions and
   * limitations under the License.
   */
  package com.alibaba.graphscope.groot.tests.ingestor;
  
  import static org.mockito.ArgumentMatchers.any;
  import static org.mockito.ArgumentMatchers.anyLong;
  import static org.mockito.Mockito.*;
  
  import com.alibaba.graphscope.groot.CompletionCallback;
  import com.alibaba.graphscope.groot.frontend.IngestorSnapshotService;
  import com.alibaba.graphscope.groot.frontend.write.KafkaAppender;
  import com.alibaba.graphscope.proto.groot.AdvanceIngestSnapshotIdRequest;
  import com.alibaba.graphscope.proto.groot.AdvanceIngestSnapshotIdResponse;
  
  import io.grpc.stub.StreamObserver;
  
  import org.junit.jupiter.api.Test;
  
  public class IngestorRpcTest {
  
      @Test
      void testIngestorSnapshotService() {
          KafkaAppender kafkaAppender = mock(KafkaAppender.class);
          IngestorSnapshotService ingestorSnapshotService =
                  new IngestorSnapshotService(kafkaAppender);
          AdvanceIngestSnapshotIdRequest req =
                  AdvanceIngestSnapshotIdRequest.newBuilder().setSnapshotId(10L).build();
          StreamObserver<AdvanceIngestSnapshotIdResponse> streamObserver = mock(StreamObserver.class);
          doAnswer(
                          invocation -> {
                              CompletionCallback<Long> callback = invocation.getArgument(1);
                              callback.onCompleted(9L);
                              return null;
                          })
                  .when(kafkaAppender)
                  .advanceIngestSnapshotId(anyLong(), any());
          ingestorSnapshotService.advanceIngestSnapshotId(req, streamObserver);
          verify(streamObserver)
                  .onNext(
                          AdvanceIngestSnapshotIdResponse.newBuilder()
                                  .setPreviousSnapshotId(9L)
                                  .build());
          verify(streamObserver).onCompleted();
      }
  }
  