tests/test_formatting: use __file__

[blueyed]

It could be used in more places there, but I think that is fine for now.

I've noticed this when copying the file to another name for a new test
being added there (to compare against master).

[Delgan]

Nice idea. However, this seems to fail on Windows. {file.path} is in lowercase, while __file__ preserves the path case.

c:\users\delgan\desktop\loguru\tests\test_formatting.py
C:\Users\delgan\Desktop\loguru\tests\test_formatting.py

[blueyed]

Should {file.path} get fixed then maybe?
Otherwise feel free to just close this.

[Delgan]

Should {file.path} get fixed then maybe?

Yep, that's definitely a bug!
The behavior differs from the standard logging. I can't remember why I used normcase() (it's there since the first commit). Maybe did I mean normpath()?

About the proposition of replacing tests/test_formatting.py with __file__, I read that in the Python source code:

frozen modules don't always have __file__ set

Although I have trouble imagining Loguru's tests being executed this way, maybe it's best to avoid using __file__to avoid this bug by principle?

[Delgan]

@blueyed Sorry for the delay before merging this, thanks for the improvement!

Also, I removed the normcase() for path in 786151c .