Django 1.1 Testing and Debugging -- Table of Contents -- Django 1.1 Testing and Debugging -- Credits -- About the Author -- About the Reviewer -- Preface -- What this book covers -- What you need for this book -- Who this book is for -- Conventions -- Reader feedback -- Customer support -- Errata -- Piracy -- Questions -- 1. Django Testing Overview -- Getting started: Creating a new application -- Understanding the sample unit test -- Understanding the sample doctest -- Running the sample tests -- Breaking things on purpose -- Test errors versus test failures -- Command line options for running tests -- Verbosity -- Settings -- Pythonpath -- Traceback -- Noinput -- Version -- Summary -- 2. Does This Code Work? Doctests in Depth -- The Survey application models -- Testing the Survey model -- Testing Survey model creation -- Is that test useful? -- Developing a custom Survey save method -- Deciding what to test -- Some pros and cons of doctests so far -- Additional doctest caveats -- Beware of environmental dependence -- Beware of database dependence -- Beware of test interdependence -- Beware of Unicode -- Summary -- 3. Testing 1, 2, 3: Basic Unit Testing -- Unit tests for the Survey save override method -- Pros of the unit test version -- Cons of the unit test version -- Revisiting the doctest caveats -- Environmental dependence -- Database dependence -- Test interdependence -- Unicode -- Providing data for unit tests -- Providing data in test fixtures -- Example test that needs test data -- Using the admin application to create test data -- Writing the function itself -- Writing a test that uses the test data -- Extracting the test data from the database -- Getting the test data loaded during the test run -- Creating data during test set up -- Summary -- 4. Getting Fancier: Django Unit Test Extensions -- Organizing tests.

Creating the survey application home page -- Defining the survey application URLs -- Developing views to serve pages -- Creating templates for pages -- Testing the survey home page -- Creating the survey detail pages -- Refining the survey detail view -- Templates for the survey detail pages -- Basic testing of the survey detail pages -- Customizing the admin add and change survey pages -- Developing a custom survey form -- Configuring admin to use the custom form -- Testing the admin customization -- Additional test support -- Supporting additional HTTP methods -- Maintaining persistent state -- E-mail services -- Providing test-specific URL configuration -- Response context and template information -- Testing transactional behavior -- Summary -- 5. Filling in the Blanks: Integrating Django and Other Test Tools -- Problems of integration -- Specifying an alternative test runner -- Creating a new management command -- How much of the code are we testing? -- Using coverage standalone -- Integrating coverage into a Django project -- The twill web browsing and testing tool -- Using the twill command line program -- Using twill in a TestCase -- Summary -- 6. Django Debugging Overview -- Django debug settings -- The DEBUG and TEMPLATE_DEBUG settings -- The TEMPLATE_STRING_IF_INVALID setting -- Debug error pages -- Database query history -- Debug support in the development server -- Handling problems in production -- Creating general error pages -- Reporting production error information -- Internal server error notifications -- Page not found notifications -- Summary -- 7. When the Wheels Fall Off: Understanding a Django Debug Page -- Starting the Survey voting implementation -- Creating test data for voting -- Defining a question form for voting -- Debug page #1: TypeError at / -- Elements of the debug page -- Basic error information -- Traceback.

Request information -- GET -- POST -- FILES -- COOKIES -- META -- Settings -- Understanding and fixing the TypeError -- Handling multiple Survey questions -- Creating the data for multiple questions -- Coding support for multiple questions -- Debug page #2: TemplateSyntaxError at /1/ -- Understanding and fixing the TemplateSyntaxError -- Recording Survey responses -- Coding support for recording Survey responses -- Debug page #3: NoReverseMatch at /1/ -- Understanding and fixing the NoReverseMatch exception -- Debug page #4: TemplateDoesNotExist at /thanks/1/ -- Understanding and fixing TemplateDoesNotExist -- Handling invalid Survey submissions -- Coding custom error message and placement -- Debug page #5: Another TemplateSyntaxError -- Fixing the second TemplateSyntaxError -- Summary -- 8. When Problems Hide: Getting More Information -- Tracking SQL queries for a request -- Settings for accessing query history in templates -- SQL queries for the home page -- Packaging the template query display for reuse -- Testing the repackaged template code -- SQL queries for the active Survey form display page -- SQL queries for posting survey answers -- The Django Debug Toolbar -- Installing the Django Debug Toolbar -- Debug toolbar appearance -- The SQL panel -- The Time panel -- The Settings panel -- The HTTP Headers panel -- The Request Vars panel -- The Templates panel -- The Signals panel -- The Logging panel -- Redirect handling by the debug toolbar -- Tracking internal code state -- Resist the urge to sprinkle prints -- Simple logging configuring for development -- Deciding what to log -- Decorators to log function entry and exit -- Applying the decorators to the Survey code -- Logging in the debug toolbar -- Summary -- 9. When You Don't Even Know What to Log: Using Debuggers -- Implementing the Survey results display.

Results display using pygooglechart -- Getting started with the debugger -- The list command -- The where command -- The args command -- The whatis command -- The print and pp commands -- Debugging the pygooglechart results display -- The step and next commands -- The continue command -- The jump command -- The break command -- The clear command -- Fixing the pygooglechart results display -- The up and down commands -- The return command -- Results display using matplotlib -- Improving the matplotlib approach -- Setting up static file serving -- Dynamically generating image files -- Dealing with race conditions -- Using the debugger to force race situations -- Notes on using graphical debuggers -- Summary -- 10. When All Else Fails: Getting Outside Help -- Tracking down a problem in Django -- Revisiting the Chapter 7 voting form -- Is the right code actually running? -- Is the code correct as per the documentation? -- Searching for a matching problem report -- Another way to search for a matching problem report -- Determining the release that contains a fix -- What if a fix hasn't been released yet? -- What if a fix hasn't been committed yet? -- What if a ticket has been closed without a fix? -- Tracking down unreported problems -- Where to ask questions -- Tips on asking questions that will get good answers -- Opening a new ticket to report a problem -- Summary -- 11. When it's Time to Go Live: Moving to Production -- Developing an Apache/mod_wsgi configuration -- Creating the WSGI script for the marketr project -- Creating an Apache VirtualHost for the marketr project -- Activating the new Apache configuration -- Debugging the new Apache configuration -- Configuring Apache to serve static files -- Testing multithreaded behavior -- Generating load with siege -- Load testing the results recording code -- Fixing the results recording code.

Additional load testing notes -- Using Apache/mod_wsgi during development -- Summary -- Index.