new_contents: import unittest
  from server_common.utilities import create_pv_name
  
  
  class TestCreatePVName(unittest.TestCase):
  
      def setUp(self):
          pass
  
      def tearDown(self):
          pass
  
      def test_when_config_name_contains_whitespace_then_replace_with_underscore(self):
          pass
  
      def test_when_config_name_contains_non_alphanumeric_characters_then_remove(self):
          pass
  
      def test_when_config_name_contains_only_numbers_and_underscores_then_replace_with_default_config_name(self):
          pass
  
      def test_when_config_name_is_blank_then_replace_with_default_config_name(self):
          create_pv_name("", [], "Default")
          self.assertEquals(create_pv_name(), "Default")
  
      def test_given_blank_config_name_when_another_blank_config_name_then_append_numbers(self):
          pass
subject: add unit tests for utilities