Unit Testing

Testing

• PloneTestCase makes it easy
• Trade off a bit of time for a lot of worry
  • Think broadly about the benefits

    For example, good tests will let you re-use more of your code, because you'll have the confidence to do so.

• Look at a product with good existing tests — such as ATContentTypes
• Mechanize-driven testing for interface elements
• Consider billing this separately to your customers

Sample Test Setup

• Sample test setup for PloneHelpCenter:

    class PHCSiteTestCase(ArchetypesTestCase.ArcheSiteTestCase):
      """Test structure for PHC"""
  
      def afterSetUp(self):
          ArchetypesTestCase.ArcheSiteTestCase.afterSetUp(self)
  
          self._portal = self.app.portal
          # login as manager
          user = self.getManagerUser()
          newSecurityManager(None, user)
  
          self._portal.invokeFactory(type_name='HelpCenter',
            id='helpctr')
          self._hc=getattr(self._portal, 'helpctr')
  
      def beforeTearDown(self):
          ArchetypesTestCase.ArcheSiteTestCase.beforeTearDown(self)
          noSecurityManager()
          del self._hc
  

Sample Test

• Sample test for PloneHelpCenter:

    class TestFAQ(PHCTestCase):
      """Test those parts of FAQ and FAQ Folder that don't 
      require a real site framework. Allows tests to run faster
      """
  
      def afterSetUp(self):
          PHCTestCase.afterSetUp(self)
          self._dummy = FAQ.HelpCenterFAQ(oid='dummy')
          self._dummy.initializeArchetype()
  
      def test_answerSTX(self):
          dummy = self._dummy
  
          dummy.setAnswer(example_stx, mimetype='text/structured')
          answer=no_whitespace.sub('',dummy.getAnswer())
          self.failUnless(answer==example_html, 'Value is %s' % answer)
  

More information on unit testing

• Lots of material and tutorials available on the web
• Get Stefan Holek's "Unit Testing Zope for Fun and Profit" presentation from EuroPython
• A very good book is Kent Beck's Unit Testing book