Test code improvement again for the coverages: https://coveralls.io/builds/9256197/source?filename=lib%2FSisimai%2FData%2FYAML.pm
Test code improvement again for the coverages: https://coveralls.io/builds/9256197/source?filename=lib%2FSisimai%2FData%2FYAML.pm

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