code: def test_numba_check():
      """Test for numba_check"""
      numba = importlib.util.find_spec("numba")
      flag = numba is not None
      assert flag == numba_check()
  
file_path: arviz/arviz/tests/base_tests/test_utils_numba.py
imports: import importlib
  from unittest.mock import Mock
  import numpy
  import pytest
  from ...stats.stats_utils import stats_variance_2d
  from ...utils import Numba, _numba_var, numba_check
  from ..helpers import running_on_ci
  from .test_utils import utils_with_numba_import_fail
label_desc: Use image node_id 3 for calling a global function with example usage: test_numba_check() without return types