code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.io.airbyte.integration_tests.sources;
  
  import static java.time.temporal.ChronoUnit.SECONDS;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.google.common.collect.ImmutableMap;
  import io.airbyte.commons.json.Jsons;
  import io.airbyte.db.jdbc.JdbcUtils;
  import io.airbyte.integrations.source.clickhouse.ClickHouseSource;
  import io.airbyte.integrations.source.jdbc.AbstractJdbcSource;
  import io.airbyte.integrations.source.jdbc.test.JdbcSourceAcceptanceTest;
  import io.airbyte.integrations.util.HostPortResolver;
  import java.sql.JDBCType;
  import java.sql.SQLException;
  import java.time.Duration;
  import java.util.List;
  import org.junit.jupiter.api.AfterEach;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.BeforeEach;
  import org.testcontainers.containers.ClickHouseContainer;
  import org.testcontainers.containers.wait.strategy.Wait;
  
  public class ClickHouseJdbcSourceAcceptanceTest extends JdbcSourceAcceptanceTest {
  
    private static final String SCHEMA_NAME = "default";
    private ClickHouseContainer db;
    private JsonNode config;
  
    @Override
    public boolean supportsSchemas() {
      return false;
    }
  
    @Override
    public JsonNode getConfig() {
      return Jsons.clone(config);
    }
  
    @Override
    public String getDriverClass() {
      return ClickHouseSource.DRIVER_CLASS;
    }
  
    @Override
    public String createTableQuery(final String tableName, final String columnClause, final String primaryKeyClause) {
      // ClickHouse requires Engine to be mentioned as part of create table query.
      // Refer : https://clickhouse.tech/docs/en/engines/table-engines/ for more information
      return String.format("CREATE TABLE %s(%s) %s",
          tableName, columnClause, primaryKeyClause.equals("") ? "Engine = TinyLog"
              : "ENGINE = MergeTree() ORDER BY " + primaryKeyClause + " PRIMARY KEY "
                  + primaryKeyClause);
    }
  
    @BeforeAll
    static void init() {
      CREATE_TABLE_WITHOUT_CURSOR_TYPE_QUERY = "CREATE TABLE %s (%s Array(UInt32)) ENGINE = MergeTree ORDER BY tuple();";
      INSERT_TABLE_WITHOUT_CURSOR_TYPE_QUERY = "INSERT INTO %s VALUES([12, 13, 0, 1]);)";
      CREATE_TABLE_WITH_NULLABLE_CURSOR_TYPE_QUERY = "CREATE TABLE %s (%s Nullable(VARCHAR(20))) ENGINE = MergeTree ORDER BY tuple();";
      INSERT_TABLE_WITH_NULLABLE_CURSOR_TYPE_QUERY = "INSERT INTO %s VALUES('Hello world :)');";
    }
  
    @Override
    @AfterEach
    public void tearDown() throws SQLException {
      db.close();
      db.stop();
      super.tearDown();
    }
  
    @Override
    public String primaryKeyClause(final List<String> columns) {
      if (columns.isEmpty()) {
        return "";
      }
  
      final StringBuilder clause = new StringBuilder();
      clause.append("(");
      for (int i = 0; i < columns.size(); i++) {
        clause.append(columns.get(i));
        if (i != (columns.size() - 1)) {
          clause.append(",");
        }
      }
      clause.append(")");
      return clause.toString();
    }
  
    @Override
    @BeforeEach
    public void setup() throws Exception {
      db = new ClickHouseContainer("clickhouse/clickhouse-server:22.5")
          .waitingFor(Wait.forHttp("/ping").forPort(8123)
              .forStatusCode(200).withStartupTimeout(Duration.of(60, SECONDS)));
      db.start();
  
      config = Jsons.jsonNode(ImmutableMap.builder()
          .put(JdbcUtils.HOST_KEY, HostPortResolver.resolveHost(db))
          .put(JdbcUtils.PORT_KEY, HostPortResolver.resolvePort(db))
          .put(JdbcUtils.DATABASE_KEY, SCHEMA_NAME)
          .put(JdbcUtils.USERNAME_KEY, db.getUsername())
          .put(JdbcUtils.PASSWORD_KEY, db.getPassword())
          .put(JdbcUtils.SSL_KEY, false)
          .build());
  
      super.setup();
    }
  
    @Override
    public AbstractJdbcSource<JDBCType> getJdbcSource() {
      return new ClickHouseSource();
    }
  
  }
  