code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.destination.azure_blob_storage.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 java.util.List;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  
  class RootLevelFlatteningSheetGeneratorTest {
  
    private final static ObjectMapper MAPPER = MoreMappers.initMapper();
    private final static ObjectNode SCHEMA = MAPPER.createObjectNode();
    static {
      final List<String> fields = Lists.newArrayList("C", "B", "A", "c", "b", "a");
      Collections.shuffle(fields);
  
      final ObjectNode schemaProperties = MAPPER.createObjectNode();
      for (final String field : fields) {
        schemaProperties.set(field, MAPPER.createObjectNode());
      }
  
      SCHEMA.set("properties", schemaProperties);
    }
  
    private RootLevelFlatteningSheetGenerator sheetGenerator;
  
    @BeforeEach
    public void createGenerator() {
      this.sheetGenerator = new RootLevelFlatteningSheetGenerator(SCHEMA);
    }
  
    @Test
    public void testGetHeaderRow() {
      assertLinesMatch(
          Lists.newArrayList(
              JavaBaseConstants.COLUMN_NAME_AB_ID,
              JavaBaseConstants.COLUMN_NAME_EMITTED_AT,
              "A", "B", "C", "a", "b", "c"),
          sheetGenerator.getHeaderRow());
    }
  
    @Test
    public void testGetRecordColumns() {
      final ObjectNode json = MAPPER.createObjectNode();
      // Field c is missing
      json.put("C", 3);
      json.put("B", "value B");
      json.set("A", MAPPER.createObjectNode().put("Field 41", 15));
      json.put("b", "value b");
      json.put("a", 1);
  
      assertLinesMatch(
          // A, B, C, a, b, c
          Lists.newArrayList("{\"Field 41\":15}", "value B", "3", "1", "value b", ""),
          sheetGenerator.getRecordColumns(json));
    }
  
  }
  