code: def test_validator_valid(validator, arg, target):
      res = validator(arg)
      if isinstance(target, np.ndarray):
          np.testing.assert_equal(res, target)
      elif not isinstance(target, Cycler):
          assert res == target
      else:
          # Cyclers can't simply be asserted equal. They don't implement __eq__
          assert list(res) == list(target)
  
imports: import copy
  import os
  import subprocess
  import sys
  from unittest import mock
  from cycler import cycler, Cycler
  import pytest
  import matplotlib
  from matplotlib import _api, _c_internal_utils
  import matplotlib.pyplot
  import matplotlib.colors
  import numpy
  from matplotlib.rcsetup import validate_bool, validate_color, validate_colorlist, _validate_color_or_linecolor, validate_cycler, validate_float, validate_fontstretch, validate_fontweight, validate_hatch, validate_hist_bins, validate_int, validate_markevery, validate_stringlist, validate_sketch, _validate_linestyle, _listify_validator
label_desc: Use image node_id 14 for calling a global function with example usage: test_validator_valid(validator, arg, target) without return types