[Tutor] Order of unittests

[Peter Otten]

On 12/10/2021 09:58, Albert-Jan Roskam wrote:
>     Hi,
>     How can I write a unittest where tge tesrs are run in the order in which
>     they are defined? I tried the code below. I prefer not to change the names
>     of the tests.

The following monkey patch seems to work:

# shadow the dir() built-in with an order-preserving analogue
def my_dir(obj):
     return list(vars(obj))
unittest.loader.dir = my_dir

# disable sorting
unittest.defaultTestLoader.sortTestMethodsUsing = None

>     Thank you in advance!
>     Albert-Jan
>     (base) albertjan at debian:~/Downloads$ cat sometest.py
>     import unittest
> 
>     unittest.defaultTestLoader.sortTestMethodsUsing = lambda *args: -1
> 
>     print("wanted order: import, mutate, export, delete")
> 
>     class SomeTest(unittest.TestCase):
>         def test_import(self):
>             pass
>         def test_mutate(self):
>            pass
>         def test_export(self):
>             pass
>         def test_delete(self):
>             pass
> 
>     if __name__ == "__main__":
>         unittest.main(verbosity=2)
> 
>     (base) albertjan at debian:~/Downloads$ python sometest.py
>     wanted order: import, mutate, export, delete
>     test_mutate (__main__.SomeTest) ... ok
>     test_import (__main__.SomeTest) ... ok
>     test_export (__main__.SomeTest) ... ok
>     test_delete (__main__.SomeTest) ... ok
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