code: def test_aggregation_segment(self):
      columnName = TupleValueExpression(name=0)
      columnName.col_alias = 0
      aggr_expr = AggregationExpression(
          ExpressionType.AGGREGATION_SEGMENT, None, columnName
      )
      tuples = Batch(
          pd.DataFrame({0: [1, 2, 3], 1: [2, 3, 4], 2: [3, 4, 5]})
      )
      batch = aggr_expr.evaluate(tuples, None)
      self.assertTrue(
          (np.array([1, 2, 3]) == batch.frames.iloc[0][0]).all()
      )
      self.assertNotEqual(str(aggr_expr), None)
  
file_path: evadb/test/unit_tests/expression/test_aggregation.py
imports: import unittest
  import numpy
  import pandas
  import pytest
  from evadb.expression.abstract_expression import ExpressionType
  from evadb.expression.aggregation_expression import AggregationExpression
  from evadb.expression.tuple_value_expression import TupleValueExpression
  from evadb.models.storage.batch import Batch
label_desc: Use image node_id 4 for calling the AggregationExpressionsTest obj's underlying member method code with example usage: obj.test_aggregation_segment() without return types