new_contents: import bids
  import tempfile
  import os
  import json
  import pytest
  from bids.config import reset_options
  
  
  def test_load_from_standard_paths():
      # Verify defaults
      reset_options(False)
      assert bids.config._settings == bids.config._default_settings
  
      # Verify that PLIERS_CONFIG and local dir take precedence
      env_config = {"loop_preproc": True}
      cwd_config = {"loop_preproc": True}
  
      handle, f = tempfile.mkstemp(suffix='.json')
      json.dump(env_config, open(f, 'w'))
      os.environ['PYBIDS_CONFIG'] = f
      target = 'pybids_config.json'
      if os.path.exists(target):
          pytest.skip("Cannot test bids config because the default config file"
                      " (pybids_config.json) already exists in the current "
                      "working directory. Skipping test to avoid overwriting.")
      json.dump(cwd_config, open(target, 'w'))
      reset_options(True)
      os.unlink(target)
      opts = bids.config._settings
  
      assert opts['loop_preproc']
  
      reset_options(False)
  
  
  def test_set_option():
  
      reset_options(False)
      opts = bids.config._settings
  
      bids.config.set_options(loop_preproc=False)
      assert opts['loop_preproc'] == False
  
      with pytest.raises(ValueError):
          bids.config.set_option('bad_key', False)
  
      reset_options(False)
  
  
  def test_get_option():
      reset_options(False)
      assert not bids.config.get_option('loop_preproc')
  
subject: Add config tests