[Perl/perl5] 676e7e: Hash::Util::FieldHash: improve test suite

[Michiel W. Beijen]

  Branch: refs/heads/blead
  Home:   https://github.com/Perl/perl5
  Commit: 676e7ef85e9ea1eb0f5e591ad8e1162bda7304de
      
https://github.com/Perl/perl5/commit/676e7ef85e9ea1eb0f5e591ad8e1162bda7304de
  Author: Michiel Beijen <m...@x14.nl>
  Date:   2022-01-04 (Tue, 04 Jan 2022)

  Changed paths:
    M ext/Hash-Util-FieldHash/lib/Hash/Util/FieldHash.pm
    M ext/Hash-Util-FieldHash/t/01_load.t
    M ext/Hash-Util-FieldHash/t/02_function.t
    M ext/Hash-Util-FieldHash/t/03_class.t
    M ext/Hash-Util-FieldHash/t/04_thread.t
    M ext/Hash-Util-FieldHash/t/05_perlhook.t
    M ext/Hash-Util-FieldHash/t/11_hashassign.t
    M ext/Hash-Util-FieldHash/t/12_hashwarn.t

  Log Message:
  -----------
  Hash::Util::FieldHash: improve test suite

 - do not count tests:
    - use done_testing
    - put tests requiring threading in their own subtests so we can
      skip_all
 - smaller improvements: use strict & warnings everywhere, tabs >>
   spaces