text: #!/usr/bin/env python
  # -*- coding: utf-8 -*-
  
  from runner.koan import *
  
  class AboutAsserts(Koan):
  
      def test_assert_truth(self):
          """
          We shall contemplate truth by testing reality, via asserts.
          """
  
          # Confused? This video should help:
          #
          #   http://bit.ly/about_asserts
  
          self.assertTrue(True) # This should be True
  
      def test_assert_with_message(self):
          """
          Enlightenment may be more easily achieved with appropriate messages.
          """
          self.assertTrue(True, "This should be True -- Please fix this")
  
      def test_fill_in_values(self):
          """
          Sometimes we will ask you to fill in the values
          """
          self.assertEqual(2, 1 + 1)
  
      def test_assert_equality(self):
          """
          To understand reality, we must compare our expectations against reality.
          """
          expected_value = 2
          actual_value = 1 + 1
          self.assertTrue(expected_value == actual_value)
  
      def test_a_better_way_of_asserting_equality(self):
          """
          Some ways of asserting equality are better than others.
          """
          expected_value = 2
          actual_value = 1 + 1
  
          self.assertEqual(expected_value, actual_value)
  
      def test_that_unittest_asserts_work_the_same_way_as_python_asserts(self):
          """
          Understand what lies within.
          """
  
          # This throws an AssertionError exception
          assert True
  
      def test_that_sometimes_we_need_to_know_the_class_type(self):
          """
          What is in a class name?
          """
  
          # Sometimes we will ask you what the class type of an object is.
          #
          # For example, contemplate the text string "navel". What is its class type?
          # The koans runner will include this feedback for this koan:
          #
          #   AssertionError: '-=> FILL ME IN! <=-' != <type 'str'>
          #
          # So "navel".__class__ is equal to <type 'str'>? No not quite. This
          # is just what it displays. The answer is simply str.
          #
          # See for yourself:
  
          self.assertEqual(str, "navel".__class__) # It's str, not <type 'str'>
  
          # Need an illustration? More reading can be found here:
          #
          #   http://bit.ly/__class__
  