[PATCH] find/tests: Add tests for file based search

[Marvin]

Hi,

While running your changed tests, I think I found new failures.
Being a bot and all I'm not very good at pattern recognition, so I might be
wrong, but could you please double-check?

Full results can be found at:
https://testbot.winehq.org/JobDetails.pl?Key=63934

Your paranoid android.


=== debian10 (32 bit report) ===

find.exe:
find.c:275: Test failed: Expected exitcode 1, got 1000

=== debian10 (32 bit French report) ===

find.exe:
find.c:275: Test failed: Expected exitcode 1, got 1000

=== debian10 (32 bit Japanese:Japan report) ===

find.exe:
find.c:275: Test failed: Expected exitcode 1, got 1000

=== debian10 (32 bit Chinese:China report) ===

find.exe:
find.c:275: Test failed: Expected exitcode 1, got 1000

=== debian10 (32 bit WoW report) ===

find.exe:
find.c:275: Test failed: Expected exitcode 1, got 1000

=== debian10 (64 bit WoW report) ===

find.exe:
find.c:275: Test failed: Expected exitcode 1, got 1000