code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.destination.s3.csv;
  
  import static org.junit.jupiter.api.Assertions.assertLinesMatch;
  
  import com.fasterxml.jackson.databind.ObjectMapper;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  import com.google.common.collect.Lists;
  import io.airbyte.commons.jackson.MoreMappers;
  import io.airbyte.integrations.base.JavaBaseConstants;
  import java.util.Collections;
  import org.junit.jupiter.api.Test;
  
  class NoFlatteningSheetGeneratorTest {
  
    private final ObjectMapper mapper = MoreMappers.initMapper();
    private final NoFlatteningSheetGenerator sheetGenerator = new NoFlatteningSheetGenerator();
  
    @Test
    public void testGetHeaderRow() {
      assertLinesMatch(
          Lists.newArrayList(
              JavaBaseConstants.COLUMN_NAME_AB_ID,
              JavaBaseConstants.COLUMN_NAME_EMITTED_AT,
              JavaBaseConstants.COLUMN_NAME_DATA),
          sheetGenerator.getHeaderRow());
    }
  
    @Test
    public void testGetRecordColumns() {
      final ObjectNode json = mapper.createObjectNode();
      json.set("Field 4", mapper.createObjectNode().put("Field 41", 15));
      json.put("Field 1", "A");
      json.put("Field 3", 71);
      json.put("Field 2", true);
  
      assertLinesMatch(
          Collections.singletonList("{\"Field 4\":{\"Field 41\":15},\"Field 1\":\"A\",\"Field 3\":71,\"Field 2\":true}"),
          sheetGenerator.getRecordColumns(json));
    }
  
  }
  