code: def test_concat_batch(self):
      batch_1 = Batch(frames=create_dataframe())
      batch_2 = Batch(frames=create_dataframe())
      batch_3 = Batch(frames=create_dataframe_same(2))
      self.assertEqual(
          batch_3, Batch.concat([batch_1, batch_2], copy=False)
      )
  
imports: import unittest
  from test.util import create_dataframe, create_dataframe_same
  import numpy
  import pandas
  from evadb.models.storage.batch import Batch
  from evadb.parser.alias import Alias
label_desc: Use image node_id 12 for calling the BatchTest obj's underlying member method code with example usage: obj.test_concat_batch() without return types