code: def test_table_str(self):
      str_data = [{"a": "b", "b": "b"}, {"a": "3", "b": "3"}]
      tbl = Table(str_data)
      assert tbl.size() == 2
      assert tbl.schema() == {"a": str, "b": str}
  
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 16 for calling the TestTable obj's underlying member method code with example usage: obj.test_table_str() without return types