code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.destination.redshift.util;
  
  import static io.airbyte.integrations.destination.redshift.constants.RedshiftDestinationConstants.UPLOADING_METHOD;
  import static org.junit.jupiter.api.Assertions.assertEquals;
  import static org.junit.jupiter.api.Assertions.assertFalse;
  import static org.junit.jupiter.api.Assertions.assertTrue;
  import static org.mockito.Mockito.mock;
  import static org.mockito.Mockito.when;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import org.junit.jupiter.api.DisplayName;
  import org.junit.jupiter.api.Test;
  
  public class RedshiftUtilTest {
  
    @Test
    @DisplayName("Should return the config when the config has uploading method")
    public void testFindS3OptionsWhenConfigHasUploadingMethod() {
      JsonNode config = mock(JsonNode.class);
      JsonNode uploadingMethod = mock(JsonNode.class);
      when(config.has(UPLOADING_METHOD)).thenReturn(true);
      when(config.get(UPLOADING_METHOD)).thenReturn(uploadingMethod);
  
      JsonNode result = RedshiftUtil.findS3Options(config);
  
      assertEquals(uploadingMethod, result);
    }
  
    @Test
    @DisplayName("Should return the config when the config does not have uploading method")
    public void testFindS3OptionsWhenConfigDoesNotHaveUploadingMethod() {
      JsonNode config = mock(JsonNode.class);
      when(config.has(UPLOADING_METHOD)).thenReturn(false);
  
      JsonNode result = RedshiftUtil.findS3Options(config);
  
      assertEquals(config, result);
    }
  
    @Test
    @DisplayName("Should return true when all of the fields are null or empty")
    public void testAnyOfS3FieldsAreNullOrEmptyWhenAllOfTheFieldsAreNullOrEmptyThenReturnTrue() {
      JsonNode jsonNode = mock(JsonNode.class);
      when(jsonNode.get("s3_bucket_name")).thenReturn(null);
      when(jsonNode.get("s3_bucket_region")).thenReturn(null);
      when(jsonNode.get("access_key_id")).thenReturn(null);
      when(jsonNode.get("secret_access_key")).thenReturn(null);
  
      assertTrue(RedshiftUtil.anyOfS3FieldsAreNullOrEmpty(jsonNode));
    }
  
    @Test
    @DisplayName("Should return false when all S3 required fields are not null or empty")
    public void testAllS3RequiredAreNotNullOrEmptyThenReturnFalse() {
      JsonNode jsonNode = mock(JsonNode.class);
      when(jsonNode.get("s3_bucket_name")).thenReturn(mock(JsonNode.class));
      when(jsonNode.get("s3_bucket_name").asText()).thenReturn("test");
      when(jsonNode.get("s3_bucket_region")).thenReturn(mock(JsonNode.class));
      when(jsonNode.get("s3_bucket_region").asText()).thenReturn("test");
      when(jsonNode.get("access_key_id")).thenReturn(mock(JsonNode.class));
      when(jsonNode.get("access_key_id").asText()).thenReturn("test");
      when(jsonNode.get("secret_access_key")).thenReturn(mock(JsonNode.class));
      when(jsonNode.get("secret_access_key").asText()).thenReturn("test");
  
      assertFalse(RedshiftUtil.anyOfS3FieldsAreNullOrEmpty(jsonNode));
    }
  
  }
  