code: def test_handler(monkeypatch, mocker, jit_file_path, test_file):
      monkeypatch.syspath_prepend(EXAMPLE_ROOT_DIR)
  
      # We need to recreate the handler to avoid running into https://github.com/pytorch/text/issues/1849
      def create_and_call_handler(input_text):
          from handler import CustomTextClassifier
  
          handler = CustomTextClassifier()
          ctx = MockContext(
              model_pt_file=Path(jit_file_path).name,
              model_dir=Path(jit_file_path).parent,
              model_file=None,
          )
  
          torch.manual_seed(42)
          handler.initialize(ctx)
  
          # Try empty string
          x = mocker.Mock(get=lambda _: input_text)
  
          x = handler.preprocess([x])
          x = handler.inference(x)
          x = handler.postprocess(x)
          return x
  
      res = create_and_call_handler("")
  
      assert res == EXPECTED_RESULT_EMPTY_STRING
  
      # Try sample text
      with open(test_file, "rb") as f:
          sample_text = f.readline()
  
      res = create_and_call_handler(sample_text)
  
      assert res == EXPECTED_RESULT_SAMPLE_TEXT
  
imports: import importlib
  import json
  import os
  import shutil
  import sys
  import time
  from argparse import Namespace
  from pathlib import Path
  import pytest
  import requests
  import test_utils
  import torch
  from model_archiver import ModelArchiverConfig
  from test_utils import REPO_ROOT
  from ts.torch_handler.unit_tests.test_utils.mock_context import MockContext
label_desc: Use image node_id 8 for calling a global function with example usage: test_handler(monkeypatch, mocker, jit_file_path, test_file) and returns: x