Automated testing is an extremely useful bug-killing tool for the modern\nWeb developer. You can use a collection of tests -- a test suite -- to\nsolve, or avoid, a number of problems:
\nWhen you're writing new code, you can use tests to validate your code\nworks as expected.
When you're refactoring or modifying old code, you can use tests to\nensure your changes haven't affected your application's behavior\nunexpectedly.
Testing a Web application is a complex task, because a Web application is made\nof several layers of logic -- from HTTP-level request handling, to form\nvalidation and processing, to template rendering. With Django's test-execution\nframework and assorted utilities, you can simulate requests, insert test data,\ninspect your application's output and generally verify your code is doing what\nit should be doing.
\nThe best part is, it's really easy.
\nThe preferred way to write tests in Django is using the unittest module\nbuilt in to the Python standard library. This is covered in detail in the\nWriting and running tests document.
You can also use any other Python test framework; Django provides an API and\ntools for that kind of integration. They are described in the\nUsing different testing frameworks section of Advanced testing topics.
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