text: # By Justin Walgran
  # Copyright (c) 2012 Azavea, Inc.
  #
  # Permission is hereby granted, free of charge, to any person
  # obtaining a copy of this software and associated documentation
  # files (the "Software"), to deal in the Software without
  # restriction, including without limitation the rights to use,
  # copy, modify, merge, publish, distribute, sublicense, and/or sell
  # copies of the Software, and to permit persons to whom the
  # Software is furnished to do so, subject to the following
  # conditions:
  #
  # The above copyright notice and this permission notice shall be
  # included in all copies or substantial portions of the Software.
  #
  # THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
  # EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES
  # OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
  # NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT
  # HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY,
  # WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING
  # FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
  # OTHER DEALINGS IN THE SOFTWARE.
  
  import unittest
  
  from blend import Result
  
  
  class TestResult(unittest.TestCase):
      """Asserts that the properties and methods of the Result class behave correctly."""
  
      def setUp(self):
          self.result = Result()
  
      def tearDown(self):
          pass
  
      def test_adding_none_to_messages_does_not_create_a_message(self):
          self.result.add_message(None)
          self.result.add_warning("warning")
          self.result.add_error("error")
          self.assertIsNone(self.result.messages, "Expected adding a None message to not add an item to Result.messages")
  
      def test_adding_none_to_warnings_does_not_create_a_warning(self):
          self.result.add_message("message")
          self.result.add_warning(None)
          self.result.add_error("error")
          self.assertIsNone(self.result.warnings, "Expected adding a None warning to not add an item to Result.warnings")
  
      def test_adding_none_to_error_does_not_create_a_message(self):
          self.result.add_message("message")
          self.result.add_warning("warning")
          self.result.add_error(None)
          self.assertIsNone(self.result.errors, "Expected adding a None error to not add an item to Result.errors")
  
      def test_errors_warnings_and_messages_as_string_with_one_of_each(self):
          self.result.add_message("message")
          self.result.add_warning("warning")
          self.result.add_error("error")
          self.assertEqual("error\nwarning\nmessage", self.result.errors_warnings_and_messages_as_string)
  
      def test_errors_warnings_and_messages_as_string_with_message_and_warning(self):
          self.result.add_message("message")
          self.result.add_warning("warning")
          self.assertEqual("warning\nmessage", self.result.errors_warnings_and_messages_as_string)
  