Test code improvement for https://coveralls.io/builds/9252219/source?filename=lib%2FSisimai%2FMIME.pm
Test code improvement for https://coveralls.io/builds/9252219/source?filename=lib%2FSisimai%2FMIME.pm

sisimai/p5-Sisimai,azumakuniyuki/p5-Sisimai,azumakuniyuki/p5-Sisimai