code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.integrations.source.postgres;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import com.fasterxml.jackson.databind.JsonNode;
  import com.fasterxml.jackson.databind.node.ObjectNode;
  import com.google.common.collect.ImmutableMap;
  import io.airbyte.commons.io.IOs;
  import io.airbyte.commons.json.Jsons;
  import io.airbyte.commons.string.Strings;
  import io.airbyte.db.Database;
  import io.airbyte.db.factory.DSLContextFactory;
  import io.airbyte.db.factory.DatabaseDriver;
  import io.airbyte.db.jdbc.DefaultJdbcDatabase;
  import io.airbyte.db.jdbc.JdbcDatabase;
  import io.airbyte.db.jdbc.JdbcUtils;
  import io.airbyte.integrations.base.AirbyteStreamNameNamespacePair;
  import io.airbyte.test.utils.PostgreSQLContainerHelper;
  import java.sql.SQLException;
  import java.util.List;
  import java.util.Set;
  import org.jooq.DSLContext;
  import org.jooq.SQLDialect;
  import org.junit.jupiter.api.AfterAll;
  import org.junit.jupiter.api.BeforeAll;
  import org.junit.jupiter.api.BeforeEach;
  import org.junit.jupiter.api.Test;
  import org.testcontainers.containers.PostgreSQLContainer;
  import org.testcontainers.utility.DockerImageName;
  import org.testcontainers.utility.MountableFile;
  
  /**
   * This class tests the {@link PostgresCdcCatalogHelper#getPublicizedTables} method.
   */
  class PostgresCdcGetPublicizedTablesTest {
  
    private static final String SCHEMA_NAME = "public";
    private static final String PUBLICATION = "publication_test_12";
    private static final String REPLICATION_SLOT = "replication_slot_test_12";
    protected static final int INITIAL_WAITING_SECONDS = 5;
    private static PostgreSQLContainer<?> container;
    private JsonNode config;
  
    @BeforeAll
    static void init() {
      final DockerImageName myImage = DockerImageName.parse("debezium/postgres:13-alpine").asCompatibleSubstituteFor("postgres");
      container = new PostgreSQLContainer<>(myImage)
          .withCopyFileToContainer(MountableFile.forClasspathResource("postgresql.conf"), "/etc/postgresql/postgresql.conf")
          .withCommand("postgres -c config_file=/etc/postgresql/postgresql.conf");
      container.start();
    }
  
    @AfterAll
    static void cleanUp() {
      container.close();
    }
  
    @BeforeEach
    void setup() throws Exception {
      final String dbName = Strings.addRandomSuffix("db", "_", 10).toLowerCase();
      final String initScriptName = "init_" + dbName.concat(".sql");
      final String tmpFilePath = IOs.writeFileToRandomTmpDir(initScriptName, "CREATE DATABASE " + dbName + ";");
      PostgreSQLContainerHelper.runSqlScript(MountableFile.forHostPath(tmpFilePath), container);
  
      this.config = getConfig(container, dbName);
  
      try (final DSLContext dslContext = getDslContext(config)) {
        final Database database = getDatabase(dslContext);
        database.query(ctx -> {
          ctx.execute("create table table_1 (id serial primary key, text_column text);");
          ctx.execute("create table table_2 (id serial primary key, text_column text);");
          ctx.execute("create table table_irrelevant (id serial primary key, text_column text);");
          ctx.execute("SELECT pg_create_logical_replication_slot('" + REPLICATION_SLOT + "', 'pgoutput');");
          // create a publication including table_1 and table_2, but not table_irrelevant
          ctx.execute("CREATE PUBLICATION " + PUBLICATION + " FOR TABLE table_1, table_2;");
          return null;
        });
      }
    }
  
    private JsonNode getConfig(final PostgreSQLContainer<?> psqlDb, final String dbName) {
      return Jsons.jsonNode(ImmutableMap.builder()
          .put(JdbcUtils.HOST_KEY, psqlDb.getHost())
          .put(JdbcUtils.PORT_KEY, psqlDb.getFirstMappedPort())
          .put(JdbcUtils.DATABASE_KEY, dbName)
          .put(JdbcUtils.SCHEMAS_KEY, List.of(SCHEMA_NAME))
          .put(JdbcUtils.USERNAME_KEY, psqlDb.getUsername())
          .put(JdbcUtils.PASSWORD_KEY, psqlDb.getPassword())
          .put(JdbcUtils.SSL_KEY, false)
          .put("is_test", true)
          .build());
    }
  
    private static DSLContext getDslContext(final JsonNode config) {
      return DSLContextFactory.create(
          config.get(JdbcUtils.USERNAME_KEY).asText(),
          config.get(JdbcUtils.PASSWORD_KEY).asText(),
          DatabaseDriver.POSTGRESQL.getDriverClassName(),
          String.format(DatabaseDriver.POSTGRESQL.getUrlFormatString(),
              config.get(JdbcUtils.HOST_KEY).asText(),
              config.get(JdbcUtils.PORT_KEY).asInt(),
              config.get(JdbcUtils.DATABASE_KEY).asText()),
          SQLDialect.POSTGRES);
    }
  
    private static Database getDatabase(final DSLContext dslContext) {
      return new Database(dslContext);
    }
  
    @Test
    public void testGetPublicizedTables() {
      try (final DSLContext dslContext = getDslContext(config)) {
        final JdbcDatabase database = new DefaultJdbcDatabase(dslContext.diagnosticsDataSource());
        // when source config does not exist
        assertEquals(0, PostgresCdcCatalogHelper.getPublicizedTables(database).size());
  
        // when config is not cdc
        database.setSourceConfig(config);
        assertEquals(0, PostgresCdcCatalogHelper.getPublicizedTables(database).size());
  
        // when config is cdc
        ((ObjectNode) config).set("replication_method", Jsons.jsonNode(ImmutableMap.of(
            "replication_slot", REPLICATION_SLOT,
            "initial_waiting_seconds", INITIAL_WAITING_SECONDS,
            "publication", PUBLICATION)));
        database.setSourceConfig(config);
        final Set<AirbyteStreamNameNamespacePair> expectedTables = Set.of(
            new AirbyteStreamNameNamespacePair("table_1", SCHEMA_NAME),
            new AirbyteStreamNameNamespacePair("table_2", SCHEMA_NAME));
        // table_irrelevant is not included because it is not part of the publication
        assertEquals(expectedTables, PostgresCdcCatalogHelper.getPublicizedTables(database));
      } catch (final SQLException e) {
        throw new RuntimeException(e);
      }
    }
  
  }
  