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Finally began proofreading docs/testing.txt. Did the intro for now; more to come 

git-svn-id: http://code.djangoproject.com/svn/django/trunk@5153 bcc190cf-cafb-0310-a4f2-bffc1f526a37
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Adrian Holovaty 2007-05-06 03:59:37 +00:00
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Testing Django applications
===========================
Automated testing is an extremely useful weapon in the bug-killing arsenal
of the modern developer. When initially writing code, a test suite can be
used to validate that code behaves as expected. When refactoring or
modifying code, tests serve as a guide to ensure that behavior hasn't
changed unexpectedly as a result of the refactor.
Automated testing is an extremely useful bug-killing tool for the modern
Web developer. You can use a collection of tests -- a **test suite** -- to
to solve, or avoid, a number of problems:
Testing a web application is a complex task, as there are many
components of a web application that must be validated and tested. To
help you test your application, Django provides a test execution
framework, and range of utilities that can be used to simulate and
inspect various facets of a web application.
* When you're writing new code, you can use tests to validate your code
works as expected.
This testing framework is currently under development, and may change
* When you're refactoring or modifying old code, you can use tests to
ensure your changes haven't affected your application's behavior
unexpectedly.
Testing a Web application is a complex task, because a Web application is made
of several layers of logic -- from HTTP-level request handling, to form
validation and processing, to template rendering. With Django's test-execution
framework and assorted utilities, you can simulate requests, insert test data,
inspect your application's output and generally verify your code is doing what
it should be doing.
The best part is, it's really easy.
.. admonition:: Note
This testing framework is currently under development. It may change
slightly before the next official Django release.
(That's *no* excuse not to write tests, though!)