new_contents: import os
  import sys
  import unittest
  
  import mock
  
  from st2common.util.sandboxing import get_sandbox_python_path
  
  
  class SandboxingUtilsTestCase(unittest.TestCase):
  
      @mock.patch('st2common.util.sandboxing.get_python_lib')
      def test_get_sandbox_python_path(self, mock_get_python_lib):
          # No inheritence
          python_path = get_sandbox_python_path(inherit_from_parent=False,
                                                inherit_parent_virtualenv=False)
          self.assertEqual(python_path, ':')
  
          # Inherit python path from current process
          # Mock the current process python path
          old_python_path = os.environ.get('PYTHONPATH', '')
          os.environ['PYTHONPATH'] = ':/data/test1:/data/test2'
  
          python_path = get_sandbox_python_path(inherit_from_parent=True,
                                                inherit_parent_virtualenv=False)
          self.assertEqual(python_path, ':/data/test1:/data/test2')
  
  
          # Inherit from current process and from virtualenv (not running inside virtualenv)
          old_real_prefix = sys.real_prefix
          del sys.real_prefix
  
          python_path = get_sandbox_python_path(inherit_from_parent=True,
                                                inherit_parent_virtualenv=False)
          self.assertEqual(python_path, ':/data/test1:/data/test2')
  
          # Inherit from current process and from virtualenv (running inside virtualenv)
          sys.real_prefix = '/usr'
          mock_get_python_lib.return_value = sys.prefix + '/virtualenvtest'
          python_path = get_sandbox_python_path(inherit_from_parent=True,
                                                inherit_parent_virtualenv=True)
          self.assertEqual(python_path, ':/data/test1:/data/test2:%s/virtualenvtest' %
                           (sys.prefix))
  
          os.environ['PYTHONPATH'] = old_python_path
          sys.real_prefix = old_real_prefix
  
subject: Add tests for sandboxing utils.