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(python2.1-lib.info)Re-using old test code

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Re-using old test code
----------------------

Some users will find that they have existing test code that they would
like to run from PyUnit, without converting every old test function to
a `TestCase' subclass.

For this reason, PyUnit provides a `FunctionTestCase' class.  This
subclass of `TestCase' can be used to wrap an existing test function.
Set-up and tear-down functions can also optionally be wrapped.

Given the following test function:

     def testSomething():
         something = makeSomething()
         assert something.name is not None
         # ...

one can create an equivalent test case instance as follows:

     testcase = unittest.FunctionTestCase(testSomething)

If there are additional set-up and tear-down methods that should be
called as part of the test case's operation, they can also be provided:

     testcase = unittest.FunctionTestCase(testSomething,
                                          setUp=makeSomethingDB,
                                          tearDown=deleteSomethingDB)

*Note:*  PyUnit supports the use of `AssertionError' as an indicator of
test failure, but does not recommend it.  Future versions may treat
`AssertionError' differently.


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