code: def test_table_get_limit_none(self):
      data = [{"a": 1, "b": 2}, {"a": 3, "b": 4}]
      tbl = Table(data)
      assert tbl.get_limit() is None
  
imports: import sys
  from datetime import date, datetime
  from perspective.core.exception import PerspectiveError
  from perspective.table import Table
  from perspective.table._state import _PerspectiveStateManager
  from perspective.table.libpsppy import PerspectiveCppError, t_filter_op
  from pytest import raises
label_desc: Use image node_id 53 for calling the TestTable obj's underlying member method code with example usage: obj.test_table_get_limit_none() without return types