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| 55 | <H2><A NAME="SECTION007330000000000000000"></A><A NAME="legacy-unit-tests"></A> | |
| 56 | <BR> | |
| 57 | 5.3.3 Re-using old test code | |
| 58 | ||
| 59 | </H2> | |
| 60 | ||
| 61 | <P> | |
| 62 | Some users will find that they have existing test code that they would | |
| 63 | like to run from PyUnit, without converting every old test function to | |
| 64 | a <tt class="class">TestCase</tt> subclass. | |
| 65 | ||
| 66 | <P> | |
| 67 | For this reason, PyUnit provides a <tt class="class">FunctionTestCase</tt> class. | |
| 68 | This subclass of <tt class="class">TestCase</tt> can be used to wrap an existing test | |
| 69 | function. Set-up and tear-down functions can also optionally be | |
| 70 | wrapped. | |
| 71 | ||
| 72 | <P> | |
| 73 | Given the following test function: | |
| 74 | ||
| 75 | <P> | |
| 76 | <div class="verbatim"><pre> | |
| 77 | def testSomething(): | |
| 78 | something = makeSomething() | |
| 79 | assert something.name is not None | |
| 80 | # ... | |
| 81 | </pre></div> | |
| 82 | ||
| 83 | <P> | |
| 84 | one can create an equivalent test case instance as follows: | |
| 85 | ||
| 86 | <P> | |
| 87 | <div class="verbatim"><pre> | |
| 88 | testcase = unittest.FunctionTestCase(testSomething) | |
| 89 | </pre></div> | |
| 90 | ||
| 91 | <P> | |
| 92 | If there are additional set-up and tear-down methods that should be | |
| 93 | called as part of the test case's operation, they can also be provided: | |
| 94 | ||
| 95 | <P> | |
| 96 | <div class="verbatim"><pre> | |
| 97 | testcase = unittest.FunctionTestCase(testSomething, | |
| 98 | setUp=makeSomethingDB, | |
| 99 | tearDown=deleteSomethingDB) | |
| 100 | </pre></div> | |
| 101 | ||
| 102 | <P> | |
| 103 | <span class="note"><b class="label">Note:</b> | |
| 104 | PyUnit supports the use of <tt class="exception">AssertionError</tt> | |
| 105 | as an indicator of test failure, but does not recommend it. Future | |
| 106 | versions may treat <tt class="exception">AssertionError</tt> differently.</span> | |
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