code: /*
   * Copyright (c) 2022 Airbyte, Inc., all rights reserved.
   */
  
  package io.airbyte.db.instance.toys;
  
  import static org.junit.jupiter.api.Assertions.assertEquals;
  
  import io.airbyte.commons.resources.MoreResources;
  import io.airbyte.db.Database;
  import io.airbyte.db.check.DatabaseAvailabilityCheck;
  import io.airbyte.db.factory.FlywayFactory;
  import io.airbyte.db.init.DatabaseInitializationException;
  import io.airbyte.db.instance.AbstractDatabaseTest;
  import io.airbyte.db.instance.DatabaseConstants;
  import io.airbyte.db.instance.DatabaseMigrator;
  import java.io.IOException;
  import javax.sql.DataSource;
  import org.flywaydb.core.Flyway;
  import org.jooq.DSLContext;
  import org.junit.jupiter.api.Test;
  
  class ToysDatabaseMigratorTest extends AbstractDatabaseTest {
  
    private static final String PRE_MIGRATION_SCHEMA_DUMP = "toys_database/pre_migration_schema.txt";
    private static final String POST_MIGRATION_SCHEMA_DUMP = "toys_database/schema_dump.txt";
  
    @Override
    public Database getDatabase(final DataSource dataSource, final DSLContext dslContext) throws IOException {
      return new Database(dslContext);
    }
  
    @Test
    void testMigration() throws Exception {
      final DataSource dataSource = getDataSource();
  
      initializeDatabase(getDslContext());
  
      final Flyway flyway = FlywayFactory.create(dataSource, getClass().getSimpleName(), ToysDatabaseMigrator.DB_IDENTIFIER,
          ToysDatabaseMigrator.MIGRATION_FILE_LOCATION);
      final DatabaseMigrator migrator = new ToysDatabaseMigrator(database, flyway);
  
      // Compare pre migration baseline schema
      migrator.createBaseline();
      final String preMigrationSchema = MoreResources.readResource(PRE_MIGRATION_SCHEMA_DUMP).strip();
      final String actualPreMigrationSchema = migrator.dumpSchema();
      assertEquals(preMigrationSchema, actualPreMigrationSchema, "The pre migration schema dump has changed");
  
      // Compare post migration schema
      migrator.migrate();
      final String postMigrationSchema = MoreResources.readResource(POST_MIGRATION_SCHEMA_DUMP).strip();
      final String actualPostMigrationSchema = migrator.dumpSchema();
      assertEquals(postMigrationSchema, actualPostMigrationSchema, "The post migration schema dump has changed");
    }
  
    private void initializeDatabase(final DSLContext dslContext) throws DatabaseInitializationException, IOException {
      final String initialSchema = MoreResources.readResource(ToysDatabaseConstants.SCHEMA_PATH);
      final DatabaseAvailabilityCheck availabilityCheck = new ToysDatabaseAvailabilityCheck(dslContext,
          DatabaseConstants.DEFAULT_CONNECTION_TIMEOUT_MS);
      new ToysDatabaseInitializer(availabilityCheck, dslContext, initialSchema).initialize();
    }
  
  }
  