text: from helpers import open_cursor, for_one_database
  
  @for_one_database
  def test_multiple_open_connections(dsn, configuration):
      with open_cursor(configuration) as cursor_1:
          assert cursor_1.executemany("SELECT 42").fetchall() == [[42]]
  
          with open_cursor(configuration) as cursor_2:
              cursor_2.executemany("SELECT 2")
              cursor_1.executemany("SELECT 1")
              assert cursor_2.fetchall() == [[2]]
              assert cursor_1.fetchall() == [[1]]
  
          assert cursor_1.executemany("SELECT 123").fetchall() == [[123]]
  