tests

Allow path objects for data-files #1012

Job	Run time
ci_setuptools (3.10, ubuntu-latest)	3m 43s
test (3.8, ubuntu-latest)	38s
collateral (diffcov)	48s
test (3.8, macos-latest)	1m 9s
collateral (docs)	30s
test_cygwin (39, windows-latest)	3m 56s
test (3.8, windows-latest)	2m 2s
test (3.12, ubuntu-latest)	44s
test (3.12, macos-latest)	50s
test_msys2_mingw (mingw64, x86_64, gcc, g++)	2m 26s
test (3.12, windows-latest)	1m 58s
test_msys2_mingw (mingw32, i686, gcc, g++)	2m 42s
test (3.9, ubuntu-latest)	40s
test_msys2_mingw (ucrt64, ucrt-x86_64, gcc, g++)	2m 11s
test (3.10, ubuntu-latest)	1m 3s
test_msys2_mingw (clang64, clang-x86_64, clang, clang++)	2m 27s
test (3.11, ubuntu-latest)	37s
test (pypy3.10, ubuntu-latest)	1m 44s
check	1s
release	0s
	30m 9s

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