test(idn): should encode url except domain

test/index.js

@@ -3,6 +3,7 @@
 require('chai').should();
 const Hexo = require('hexo');
 const cheerio = require('cheerio');
+const { encodeURL } = require('hexo-util');
 
 describe('Sitemap generator', () => {
   const hexo = new Hexo(__dirname, {silent: true});
@@ -68,3 +69,38 @@ describe('Sitemap generator', () => {
     });
   });
 });
+
+describe('IDN', () => {
+  const hexo = new Hexo(__dirname, {silent: true});
+  hexo.config.sitemap = {
+    path: 'sitemap.xml'
+  };
+  const Post = hexo.model('Post');
+  const generator = require('../lib/generator').bind(hexo);
+  let locals = {};
+
+  before(() => {
+    return hexo.init().then(() => {
+      return Post.insert([
+        {source: 'foo', slug: 'foo', updated: 1e8},
+        {source: 'bar', slug: 'bar', updated: 1e8 + 1},
+        {source: 'baz', slug: 'baz', updated: 1e8 - 1}
+      ]).then(data => {
+        locals = hexo.locals.toObject();
+      });
+    });
+  });
+
+  it('Default', () => {
+    hexo.config.url = 'http://fôo.com/bár';
+    const parsedUrl = encodeURL(hexo.config.url);
+
+    const result = generator(locals);
+    const $ = cheerio.load(result.data);
+
+    $('url').each((index, element) => {
+      $(element).children('loc').text().startsWith(parsedUrl).should.be.true;
+    });
+    hexo.config.url = 'http://yoursite.com/';
+  });
+});