Test::cpan::meta::yaml::perl was written to ensure that a meta.yml file, provided with a standard distribution, meets the specifications that are gradually being introduced to module uploads, via the use of extutils::makemaker, module::build and module::install. it is one of three very similar packages with different dependencies and you may prefer one of the others: libtest-cpan-meta-perl or libtest-cpan-meta-json-perl.