We now explicitly enabling support for the minimum libraries needed
to build and run the AK testsuite. 81/82 tests are running and
passing. The exception is LexicalPath, as some path behaviour on
Windows is different than Unix, so the current tests will have lots of
platform specific failures. The implementer of LexicalPathWindows
recommended windows-specific tests here, so I will do that in a
follow up.
Now that all EXPECT_CRASH related macros have been replaced in
favour of using EXPECT_DEATH related macros, CrashTest is no
longer used and can be deleted.
A challenge for getting LibTest working on Windows has always
been CrashTest. It implements death tests similar to Google Test
where a child process is cloned to invoke the expression that
should abort/terminate the program. Then the exit code of the
child is used by the parent test process to verify if the
application correctly aborted/terminated due to invoking
the expression.
The problem was that finding an equivalent way to port Crash::run()
to Windows was not looking very likely as publicly exposed Win32/
Native APIs have no equivalent to fork(); however, Windows actually
does have native support for process cloning via undocumented NT
APIs that clever people reverse engineered and published, see
`NtCreateUserProcess()`.
All that being said, this `EXPECT_DEATH()` implementation avoids
needing to use a child process in general, allowing us to remove
CrashTest in favour of a single cross-platform solution for death
tests.
