class TemporaryQueryTest

class TemporaryQueryTest extends DatabaseTestBase {
  
  /**
   * {@inheritdoc}
   */
  protected static $modules = [
    'database_test',
  ];
  
  /**
   * {@inheritdoc}
   */
  protected $defaultTheme = 'stark';
  
  /**
   * Returns the number of rows of a table.
   */
  public function countTableRows($table_name) {
    return Database::getConnection()->select($table_name)
      ->countQuery()
      ->execute()
      ->fetchField();
  }
  
  /**
   * Confirms that temporary tables work and are limited to one request.
   */
  public function testTemporaryQuery() {
    $this->expectDeprecation('Connection::generateTemporaryTableName() is deprecated in drupal:9.3.0 and is removed from drupal:10.0.0. There is no replacement. See https://www.drupal.org/node/3211781');
    $connection = Database::getConnection();
    $this->drupalGet('database_test/db_query_temporary');
    $data = json_decode($this->getSession()
      ->getPage()
      ->getContent());
    if ($data) {
      $this->assertEquals($this->countTableRows('test'), $data->row_count, 'The temporary table contains the correct amount of rows.');
      $this->assertFalse($connection->schema()
        ->tableExists($data->table_name), 'The temporary table is, indeed, temporary.');
    }
    else {
      $this->fail('The creation of the temporary table failed.');
    }
    // Now try to run two temporary queries in the same request.
    $table_name_test = $connection->queryTemporary('SELECT [name] FROM {test}', []);
    $table_name_task = $connection->queryTemporary('SELECT [pid] FROM {test_task}', []);
    $this->assertEquals($this->countTableRows('test'), $this->countTableRows($table_name_test), 'A temporary table was created successfully in this request.');
    $this->assertEquals($this->countTableRows('test_task'), $this->countTableRows($table_name_task), 'A second temporary table was created successfully in this request.');
    // Check that leading whitespace and comments do not cause problems
    // in the modified query.
    $sql = "\n      -- Let's select some rows into a temporary table\n      SELECT [name] FROM {test}\n    ";
    $table_name_test = $connection->queryTemporary($sql, []);
    $this->assertEquals($this->countTableRows('test'), $this->countTableRows($table_name_test), 'Leading white space and comments do not interfere with temporary table creation.');
  }

}