code: def test_date_time_type_isoformat(self):
      rows = [
          ("1984-07-05T03:44:12",),
          ("1997-02-28T03:12:00",),
          ("2020-03-19T04:40:00",),
          ("",),
      ]
  
      inferred = self.tester.run(rows, ["one"])
  
      self.assertIsInstance(inferred[0], DateTime)
  
imports: import unittest
  from agate.data_types import Boolean, Date, DateTime, Number, Text, TimeDelta
  from agate.type_tester import TypeTester
label_desc: Use image node_id 12 for calling the TestTypeTester obj's underlying member method code with example usage: obj.test_date_time_type_isoformat() without return types