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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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