code: def test_init(self):
      transcriber = LocalWhisperTranscriber(
          model="large-v2"
      )  # Doesn't matter if it's huge, the model is not loaded in init.
      assert transcriber.model == "large-v2"
      assert transcriber.device == torch.device("cpu")
      assert transcriber._model is None
  
file_path: haystack/test/components/audio/test_whisper_local.py
imports: import sys
  from pathlib import Path
  from unittest.mock import patch, MagicMock
  import pytest
  import torch
  from haystack.dataclasses import Document, ByteStream
  from haystack.components.audio import LocalWhisperTranscriber
label_desc: Use image node_id 1 for calling the TestLocalWhisperTranscriber obj's underlying member method code with example usage: obj.test_init() without return types