code: def test_items(self):
      self.assertSequenceEqual(
          self.row.items(), [("one", "a"), ("two", "b"), ("three", "c")]
      )
  
imports: import unittest
  from agate.mapped_sequence import MappedSequence
label_desc: Use image node_id 16 for calling the TestMappedSequence obj's underlying member method code with example usage: obj.test_items() without return types