code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.source.bigquery;
  
  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 com.fasterxml.jackson.databind.JsonNode;
  import io.airbyte.commons.json.Jsons;
  import io.airbyte.commons.resources.MoreResources;
  import java.io.IOException;
  import org.junit.jupiter.api.Test;
  
  class BigQuerySourceTest {
  
    @Test
    public void testEmptyDatasetIdInConfig() throws IOException {
      final JsonNode configJson = Jsons.deserialize(MoreResources.readResource("test_config_empty_datasetid.json"));
      final JsonNode dbConfig = new BigQuerySource().toDatabaseConfig(configJson);
      assertTrue(dbConfig.get(BigQuerySource.CONFIG_DATASET_ID).isEmpty());
    }
  
    @Test
    public void testMissingDatasetIdInConfig() throws IOException {
      final JsonNode configJson = Jsons.deserialize(MoreResources.readResource("test_config_missing_datasetid.json"));
      final JsonNode dbConfig = new BigQuerySource().toDatabaseConfig(configJson);
      assertFalse(dbConfig.hasNonNull(BigQuerySource.CONFIG_DATASET_ID));
    }
  
    @Test
    public void testNullDatasetIdInConfig() throws IOException {
      final JsonNode configJson = Jsons.deserialize(MoreResources.readResource("test_config_null_datasetid.json"));
      final JsonNode dbConfig = new BigQuerySource().toDatabaseConfig(configJson);
      assertFalse(dbConfig.hasNonNull(BigQuerySource.CONFIG_DATASET_ID));
    }
  
    @Test
    public void testConfig() throws IOException {
      final JsonNode configJson = Jsons.deserialize(MoreResources.readResource("test_config.json"));
      final JsonNode dbConfig = new BigQuerySource().toDatabaseConfig(configJson);
      assertEquals("dataset", dbConfig.get(BigQuerySource.CONFIG_DATASET_ID).asText());
      assertEquals("project", dbConfig.get(BigQuerySource.CONFIG_PROJECT_ID).asText());
      assertEquals("credentials", dbConfig.get(BigQuerySource.CONFIG_CREDS).asText());
    }
  
  }
  