Add zig fmt to cli tests

[squeek502]

Should help to reduce the number of regressions that have been happening with zig fmt.

This is failing for me locally on Windows with unexpected status 0xC0000056 (STATUS_DELETE_PENDING), but is working on Linux. zig fmt is misbehaving for me on Windows currently though (AccessDenied or unexpected 0xC0000103 (NOT_A_DIRECTORY)) when invoking it normally, so I think it's catching an actual regression.

[andrewrk]

This is failing for me locally on Windows

Is this after edea7a4? I did test that commit on windows before merging like this:

zig-cache\bin\zig.exe fmt ..\lib\std

[andrewrk]

Also, I think this change might be able to be much simpler, just by changing

zig/build.zig

Line 50 in 5622044

const fmt_build_zig = b.addFmt(&[_][]const u8{"build.zig"});

from build.zig to a directory.

[andrewrk]

Thanks BTW 👍

[squeek502]

This is failing for me locally on Windows

Is this after edea7a4? I did test that commit on windows before merging like this:

zig-cache\bin\zig.exe fmt ..\lib\std

Yes, after edea7a4.

---

C:\Users\Ryan\Programming\Zig\zig\build-release>".\bin\zig.exe" fmt ..\lib\std
unable to format '..\lib\std\os.zig': error.AccessDenied

(this is likely #5643)

---

C:\Users\Ryan\Programming\Zig\zig\build-release>".\bin\zig.exe" fmt ..\lib\std\os.zig
error.Unexpected NTSTATUS=0xc0000103
Unable to dump stack trace: debug info stripped
Unexpected

(this is likely caused by some change in edea7a4)

---

I'm still using Windows 7, though, so that could be the difference? EDIT: Don't think this is the problem; I'm expecting the CI to fail as well.

EDIT#2: CI is failing, so it's not Windows 7-specific:

The following command exited with error code 4294967295:
cd D:\a\1\s\zig-cache\clitest && D:\a\1\s\build\dist\bin\zig.exe fmt D:\a\1\s\zig-cache\clitest\fmt1.zig 
stderr:
Unexpected

[squeek502]

Also, I think this change might be able to be much simpler, just by changing

zig/build.zig

Line 50 in 5622044

const fmt_build_zig = b.addFmt(&[_][]const u8{"build.zig"});

from build.zig to a directory.

This would still be an incomplete test, since it doesn't actually make changes to the file (".\bin\zig.exe" fmt ..\build.zig works fine for me [it avoids the errors in the previous comment because no changes are made to the file]).

The added cli tests in this PR intentionally create files that will be changed by zig fmt, so they should be much more complete.