code: def testReadConfigFileFromPath(self, findConfigFile, environ):
      environ.get.return_value = None
      findConfigFile.side_effect = self.files.get
      configuration.Configuration.clear()
      prefix, _, filename = self.files["nupic-default.xml"].rpartition(
          os.sep
      )
      configuration.Configuration.readConfigFile(filename, prefix)
      self.assertTrue(
          configuration.Configuration.get("dummy") == "dummy value"
      )
  
imports: from copy import copy
  import os
  import shutil
  from StringIO import StringIO
  import sys
  import tempfile
  import unittest2
  import uuid
  from pkg_resources import resource_filename
  from mock import Mock, patch
  from pkg_resources import resource_filename
  from xml.parsers.expat import ExpatError
  import nupic
  import nupic.support.configuration_custom
  import configuration_test
label_desc: Use image node_id 29 for calling the ConfigurationCustomTest obj's underlying member method code with example usage: obj.testReadConfigFileFromPath(findConfigFile, environ) without return types