benchmark: add url/url-searchparams-sort.js

PR-URL: https://github.com/nodejs/node/pull/11098
Fixes: https://github.com/nodejs/node/issues/10760
Ref: https://github.com/whatwg/url/issues/26
Ref: https://github.com/whatwg/url/pull/199
Ref: https://github.com/w3c/web-platform-tests/pull/4531
Reviewed-By: James M Snell <jasnell@gmail.com>
Reviewed-By: Joyee Cheung <joyeec9h3@gmail.com>

benchmark/url/url-searchparams-sort.js

@@ -0,0 +1,48 @@
+'use strict';
+const common = require('../common.js');
+const URLSearchParams = require('url').URLSearchParams;
+
+const inputs = {
+  empty: '',
+  sorted: 'a&b&c&d&e&f&g&h&i&j&k&l&m&n&o&p&q&r&s&t&u&v&w&x&y&z',
+  almostsorted: 'a&b&c&d&e&f&g&i&h&j&k&l&m&n&o&p&q&r&s&t&u&w&v&x&y&z',
+  reversed: 'z&y&x&w&v&u&t&s&r&q&p&o&n&m&l&k&j&i&h&g&f&e&d&c&b&a',
+  random: 'm&t&d&c&z&v&a&n&p&y&u&o&h&l&f&j&e&q&b&i&s&x&k&w&r&g',
+  // 8 parameters
+  short: 'm&t&d&c&z&v&a&n',
+  // 88 parameters
+  long: 'g&r&t&h&s&r&d&w&b&n&h&k&x&m&k&h&o&e&x&c&c&g&e&b&p&p&s&n&j&b&y&z&' +
+        'u&l&o&r&w&a&u&l&m&f&j&q&p&f&e&y&e&n&e&l&m&w&u&w&t&n&t&q&v&y&c&o&' +
+        'k&f&j&i&l&m&g&j&d&i&z&q&p&x&q&q&d&n&y&w&g&i&v&r'
+};
+
+function getParams(str) {
+  const out = [];
+  for (const key of str.split('&')) {
+    out.push(key, '');
+  }
+  return out;
+}
+
+const bench = common.createBenchmark(main, {
+  type: Object.keys(inputs),
+  n: [1e6]
+}, {
+  flags: ['--expose-internals']
+});
+
+function main(conf) {
+  const searchParams = require('internal/url').searchParamsSymbol;
+  const input = inputs[conf.type];
+  const n = conf.n | 0;
+  const params = new URLSearchParams();
+  const array = getParams(input);
+
+  var i;
+  bench.start();
+  for (i = 0; i < n; i++) {
+    params[searchParams] = array.slice();
+    params.sort();
+  }
+  bench.end(n);
+}

lib/internal/url.js

@@ -1257,3 +1257,4 @@ exports.domainToUnicode = domainToUnicode;
 exports.encodeAuth = encodeAuth;
 exports.urlToOptions = urlToOptions;
 exports.formatSymbol = kFormat;
+exports.searchParamsSymbol = searchParams;