Only copy across the plugins that are needed for each test to run. This reduces the tests' run time from 25s to 9s locally.
The exact plugins used for some tests changed (mostly to simplify handling of Starfield, which doesn't have Blank.esm in its test plugins) but only when the change didn't matter for what is being tested.
It's possible that some GameInterfaceTest tests were coincidently testing ghosted plugin support and now aren't, so I've added some more tests to explicitly cover that.
This was done by running `doxygen -u Doxyfile`, using doxygen v1.9.8, as that's the oldest version used in CI, and the latest version (1.16.1) doesn't warn about any other settings being obsolete.
Some tests have been updated because UTF-8 is used as the native
path encoding with MinGW/Wine, unlike MSVC/Windows.
Some of the tests fail:
- 4 Rust tests fail because long paths are not enabled and so the
paths used when creating symlinks and junction paths are too
long. I've tested them with x86_64-pc-windows-gnu and
x86_64-pc-windows-gnullvm, and both see the same behaviour. The
tests pass when the MinGW-built executable is run on Windows, so
this is a Wine limitation.
- 12 C++ tests fail because directory symlink creation is not
implemented. They fail whether the MinGW-built executable is run
in Wine or on Windows, so this is a MinGW limitation.
- 1 C++ filesystem test fails because long paths are not enabled.
The failing tests are skipped at runtime when built with MinGW,
aside from the one test for long paths being enabled, which expects
them to be disabled when built with MinGW.
If long paths are enabled, e.g. by running
wine reg add HKLM\\System\\CurrentControlSet\\Control\\Filesystem /v LongPathsEnabled /t REG_DWORD /d 1 /f
then many more tests fail because the C++ tests create long paths
when that Registry value is set, but it doesn't seem to actually
enable long path support in Wine, so various filesystem operations
fail.