code: def test_errors(bs_setup):
      x = np.arange(10)
      y = np.arange(100)
      with pytest.raises(ValueError):
          IIDBootstrap(x, y)
      with pytest.raises(ValueError):
          IIDBootstrap(index=x)
      bs = IIDBootstrap(y)
  
      with pytest.raises(ValueError):
          bs.conf_int(bs_setup.func, method="unknown")
      with pytest.raises(ValueError):
          bs.conf_int(bs_setup.func, tail="dragon")
      with pytest.raises(ValueError):
          bs.conf_int(bs_setup.func, size=95)
  
imports: from __future__ import annotations
  import copy
  from typing import Callable, NamedTuple
  import warnings
  import numpy
  from numpy.random import RandomState
  from numpy.testing import assert_allclose, assert_equal
  import pandas
  from pandas.testing import assert_frame_equal, assert_series_equal
  import pytest
  import scipy.stats
  from arch.bootstrap import CircularBlockBootstrap, IIDBootstrap, IndependentSamplesBootstrap, MovingBlockBootstrap, StationaryBootstrap
  from arch.bootstrap._samplers_python import stationary_bootstrap_sample
  from arch.bootstrap._samplers_python import stationary_bootstrap_sample_python
  from arch.bootstrap.base import _loo_jackknife
  from arch.utility.exceptions import StudentizationError
label_desc: Use image node_id 6 for calling a global function with example usage: test_errors(bs_setup) without return types