code: def test_cast_floats(self):
      self.assertAlmostEqual(self.type.cast(0.1 + 0.2), Decimal("0.3"))
      self.assertEqual(
          self.type.cast(0.12345123456), Decimal("0.12345123456")
      )
  
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 8 for calling the TestNumber obj's underlying member method code with example usage: obj.test_cast_floats() without return types