This name always confuses me, since there is also test_common.py. And this
module is not actually a test suite, even though it starts with "test".
This also makes for better tab completion, e.g.
python3 -m unittest tests/te[Tab] -> tests/test_
ZipFile.namelist() produces a string per file. The filename could contain
newline chars, including at the beginning and end. ^$ in regex matches
around newline chars. \A\Z matches the beginning/end of the full string.
This is exactly the same as obfusk's r'\AMETA-INF/(?s:.)*\.(DSA|EC|RSA)\Z'
but in a readable format that is also easily searchable, and standard for
this code base.
https://github.com/obfusk/fdroid-fakesigner-poc/blob/master/fdroidserver-regex.patch#1251
