test: compatibility with [email protected]

[curbengh]

What does it do?

• IDN now always output in unicode, regardless the source is unicode or punycode, after Leave IDN intact in permalink hexo-util#116
• category and tag uses chinese word because diacritic is escaped by default (á -> a); once escaped, it's not percent-encoded anymore so couldn't cover the url encoding test.
• expected result now uses dynamic result of encodeURL()/full_url_for() instead of hardcoded, this allows compatibility with any changes in encodeURL().

How to test

git clone -b hexo-util_1.5 https://github.com/curbengh/hexo.git
cd hexo
npm install
npm test

Pull request tasks

• Add test cases for the changes.
• Passed the CI test.

[coveralls]

Coverage remained the same at 97.144% when pulling ef0a966 on curbengh:hexo-util_1.5 into 878cf1b on hexojs:master.

[coveralls]

Coverage remained the same at 97.144% when pulling ef0a966 on curbengh:hexo-util_1.5 into 878cf1b on hexojs:master.

[SukkaW]

Since all checks have passed, I think it is good to go then.