docstr: Test that an error is thrown if the environment variables are too long
  to be processed. Current limit is 1024, but this may change later.
docstr_tok: ["Test","that","an","error","is","thrown","if","the","environment","variables","are","too","long","to","be","processed",".","Current","limit","is","1024",",","but","this","may","change","later","."]
code: def test_variable_too_long(self, action):
      """
      Test that an error is thrown if the environment variables are too long
      to be processed. Current limit is 1024, but this may change later.
      """
      MAX_VAR_LENGTH = 1024
      # Actual length is MAX_VAR_LENGTH + 1 due to null-termination
      self.env[f"NPY_{action}_CPU_FEATURES"] = "t" * MAX_VAR_LENGTH
      msg = (
          f"Length of environment variable 'NPY_{action}_CPU_FEATURES' is "
          f"{MAX_VAR_LENGTH + 1}, only {MAX_VAR_LENGTH} accepted"
      )
      err_type = "RuntimeError"
      self._expect_error(msg, err_type)
  
imports: import sys, platform, re, pytest
  from numpy.core._multiarray_umath import __cpu_features__, __cpu_baseline__, __cpu_dispatch__
  import numpy
  import subprocess
  import pathlib
  import os
  import re
label_desc: Use image node_id 7 for calling the TestEnvPrivation obj's underlying member method code with example usage: obj.test_variable_too_long(action) without return types