code: def test_slicing_should_word_for_negative_stop_value(self):
      batch = Batch(frames=create_dataframe(2))
      expected = Batch(frames=create_dataframe())
      self.assertEqual(expected, batch[:-1])
  
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 7 for calling the BatchTest obj's underlying member method code with example usage: obj.test_slicing_should_word_for_negative_stop_value() without return types