code: def test_to_vw_cmd():
      expected = [
          "vw",
          "-l",
          "0.1",
          "--l1",
          "0.2",
          "--loss_function",
          "logistic",
          "--holdout_off",
          "--rank",
          "3",
          "-t",
      ]
      params = dict(
          l=0.1,
          l1=0.2,
          loss_function="logistic",
          holdout_off=True,
          quiet=False,
          rank=3,
          t=True,
      )
      assert VW.to_vw_cmd(params=params) == expected
  
file_path: recommenders/tests/unit/recommenders/models/test_vowpal_wabbit.py
imports: import os
  import pytest
  from unittest import mock
  import pandas
  from recommenders.models.vowpal_wabbit.vw import VW
label_desc: Use image node_id 4 for calling a global function with example usage: test_to_vw_cmd() without return types