Time for action – decorating tests

We will apply the @setastest decorator directly to test functions. Then we will apply the same decorator to a method to disable it. Also, we will skip one of the tests and fail another. First, install nose in case you don't have it yet.

1. Install nose with setuptools:

   $ [sudo] easy_install nose
   

   Or pip:

   $ [sudo] pip install nose
   

2. Apply one function as being a test and another as not being a test:

   @setastest(False)
   def test_false():
      pass
   
   @setastest(True)
   def test_true():
      pass

3. Skip tests with the @skipif decorator. Let's use a condition that always leads to a test being skipped:

   @skipif(True)
   def test_skip():
      pass

4. Add a test function that always passes. Then, decorate it with the @knownfailureif decorator so that the test always fails:

   @knownfailureif(True)
   def test_alwaysfail():
        pass

5. Define some test classes with methods that normally should be executed by nose:

   class TestClass():
      def test_true2(self):
         pass
   
   class TestClass2(...