code: def test_ImdbProcessor():
      dataset_name = "imdb"
      dataset_path = os.path.join(base_path, dataset_name)
      processor = PROCESSORS[dataset_name.lower()]()
      trainvalid_dataset = processor.get_train_examples(dataset_path)
      test_dataset = processor.get_test_examples(dataset_path)
  
      assert processor.get_num_labels() == 2
      assert len(trainvalid_dataset) == 25000
      assert len(test_dataset) == 25000
  
file_path: OpenPrompt/test/test_data_processor/test_text_classification_dataset.py
imports: import os, sys
  from os.path import dirname
  from os.path import abspath, join
  from openprompt.data_utils.text_classification_dataset import PROCESSORS
label_desc: Use image node_id 3 for calling a global function with example usage: test_ImdbProcessor() without return types