addCleanup vs tearDown

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有刺的猬
有刺的猬 2021-02-03 19:47

Recently, Ned Batchelder during his talk at PyCon 2016 noted:

If you are using unittest to write your tests, definitely use addCleanu

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  • 2021-02-03 19:59

    Per the addCleanup doc string:

    Cleanup items are called even if setUp fails (unlike tearDown)

    addCleanup can be used to register multiple functions, so you could use separate functions for each resource you wish to clean up. That would allow your code to be a bit more reusable/modular.

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  • 2021-02-03 20:10

    addCleanup() methods will run even if one of them fails, and will run even if setUp() fails. You should also consider using pytest.

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  • 2021-02-03 20:11

    Another good thing about addCleanup is that it just works as you'd expect.

    For example, if you call it in a setUp function, then all test methods will call the cleanup function in the end.

    If you call it in a test method, only this method calls the cleanup function.

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