Function templateFunc

testing/describes.js:247–255

(name, variants, fn, describeFunc)

   * @param {function(string, function())} describeFunc
   */
  const templateFunc = function (name, variants, fn, describeFunc) {
    return describeFunc(name, function () {
      for (const name in variants) {
        sandboxed(name ? ` ${name} ` : SUB, {}, function (env) {
          fn.call(this, name, variants[name], env);
        });
      }
    });
  };

  const createTemplate = (describeFunc) => (name, variants, fn) =>
    templateFunc(name, variants, fn, describeFunc);