text: describe('obfuscate()', function () {
      it('should obfuscate plain text', function () {
          const str = 'Hello World';
          assert.equal(obfuscate(str), '\\x48\\x65\\x6c\\x6c\\x6f\\x20\\x57\\x6f\\x72\\x6c\\x64');
      });
      it('should obfuscate non-ASCII text', function () {
          const str = '\ud83d\ude00';
          assert.equal(obfuscate(str), '\\ud83d\\ude00');
      });
  });
  