code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.destination.redshift;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import com.fasterxml.jackson.databind.ObjectMapper;
  import io.airbyte.commons.jackson.MoreMappers;
  import io.airbyte.integrations.destination.redshift.RedshiftDestination.DestinationType;
  import org.junit.jupiter.api.DisplayName;
  import org.junit.jupiter.api.Test;
  
  @DisplayName("RedshiftDestination")
  public class RedshiftDestinationTest {
  
    private static final ObjectMapper mapper = MoreMappers.initMapper();
  
    @Test
    @DisplayName("When not given S3 credentials should use INSERT")
    public void useStandardInsert() {
      final var standardInsertConfigStub = mapper.createObjectNode();
      standardInsertConfigStub.put("method", "Standard");
      final var uploadingMethodStub = mapper.createObjectNode();
      uploadingMethodStub.set("uploading_method", standardInsertConfigStub);
      assertEquals(DestinationType.STANDARD, RedshiftDestination.determineUploadMode(uploadingMethodStub));
    }
  
    @Test
    @DisplayName("When given standard backward compatibility test")
    public void useStandardInsertBackwardCompatibility() {
      final var standardInsertConfigStub = mapper.createObjectNode();
      assertEquals(DestinationType.STANDARD, RedshiftDestination.determineUploadMode(standardInsertConfigStub));
    }
  
    @Test
    @DisplayName("When given S3 credentials should use COPY")
    public void useS3Staging() {
      final var s3StagingStub = mapper.createObjectNode();
      final var uploadingMethodStub = mapper.createObjectNode();
      s3StagingStub.put("s3_bucket_name", "fake-bucket");
      s3StagingStub.put("s3_bucket_region", "fake-region");
      s3StagingStub.put("access_key_id", "test");
      s3StagingStub.put("secret_access_key", "test key");
      s3StagingStub.put("method", "S3 Staging");
      uploadingMethodStub.set("uploading_method", s3StagingStub);
      assertEquals(DestinationType.COPY_S3, RedshiftDestination.determineUploadMode(uploadingMethodStub));
    }
  
    @Test
    @DisplayName("When given S3 backward compatibility test")
    public void useS3StagingBackwardCompatibility() {
      final var s3StagingStub = mapper.createObjectNode();
      s3StagingStub.put("s3_bucket_name", "fake-bucket");
      s3StagingStub.put("s3_bucket_region", "fake-region");
      s3StagingStub.put("access_key_id", "test");
      s3StagingStub.put("secret_access_key", "test key");
      assertEquals(DestinationType.COPY_S3, RedshiftDestination.determineUploadMode(s3StagingStub));
    }
  
  }
  