code: def test_iso_format(self):
      values = ("1994-03-01", "2011-02-17")
      casted = tuple(self.type.cast(v) for v in values)
      self.assertSequenceEqual(
          casted,
          (datetime.date(1994, 3, 1), datetime.date(2011, 2, 17)),
      )
  
imports: import datetime
  import pickle
  import unittest
  from decimal import Decimal
  import parsedatetime
  from agate.data_types import Boolean, Date, DateTime, Number, Text, TimeDelta
  from agate.exceptions import CastError
label_desc: Use image node_id 4 for calling the TestDate obj's underlying member method code with example usage: obj.test_iso_format() without return types