text: 'use strict';
  
  const Punycode = require('punycode');
  
  const Code = require('@hapi/code');
  const Address = require('..');
  const Lab = require('@hapi/lab');
  
  
  const internals = {};
  
  
  const { describe, it } = exports.lab = Lab.script();
  const expect = Code.expect;
  
  
  describe('email', () => {
  
      it('available as direct require', () => {
  
          expect(require('../lib/email').isValid('test@example.com')).to.be.true();
      });
  
      describe('analyze()', () => {
  
          it('identifies error', () => {
  
              const tests = [
                  ['', 'Address must be a non-empty string'],
                  ['êjness@iana.org', 'Address contains forbidden Unicode characters', { allowUnicode: false }],
                  ['test@test@test', 'Address cannot contain more than one @ character'],
                  ['test', 'Address must contain one @ character'],
                  ['@example.com', 'Address local part cannot be empty'],
                  ['test@', 'Domain must be a non-empty string'],
                  ['1234567890@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz.com', 'Address too long'],
                  ['1234567890123456789012345678901234567890123456789012345678901234567890@example.com', 'Address local part too long'],
                  ['x..y@example.com', 'Address local part contains empty dot-separated segment'],
                  ['x:y@example.com', 'Address local part contains invalid character'],
                  ['ê:y@example.com', 'Address local part contains invalid character'],
                  ['test@com', 'Domain lacks the minimum required number of segments'],
                  ['test@x.no-such-tld', 'Domain uses forbidden TLD'],
                  ['test@example..com', 'Domain contains empty dot-separated segment'],
                  ['test@1234567890123456789012345678901234567890123456789012345678901234567890.com', 'Domain contains dot-separated segment that is too long'],
                  ['test@example+.com', 'Domain contains invalid character', { tlds: false }],
                  ['test@example.com_', 'Domain contains invalid tld character', { tlds: false }]
              ];
  
              for (let i = 0; i < tests.length; ++i) {
                  const email = tests[i];
                  const output = Address.email.analyze(email[0], email[2]);
                  const result = email[1];
  
                  if (!output ||
                      output.error !== result) {
  
                      console.log(i, email[0]);
                  }
  
                  expect(output.error).to.equal(result);
              }
          });
  
          it('validates options', () => {
  
              const tests = [
                  ['test@example.com', 'Invalid options: tlds must be a boolean or an object', { tlds: 1 }],
                  ['test@example.com', 'Invalid options: tlds.allow must be a Set object or true', { tlds: { allow: ['test'] } }],
                  ['test@example.com', 'Invalid options: tlds.deny must be a Set object', { tlds: { deny: ['test'] } }],
                  ['test@example.com', 'Invalid options: cannot specify both tlds.allow and tlds.deny lists', { tlds: { allow: new Set(), deny: new Set() } }],
                  [1, 'Invalid input: email must be a string']
              ];
  
              for (let i = 0; i < tests.length; ++i) {
                  const email = tests[i];
                  expect(() => Address.email.analyze(email[0], email[2])).to.throw(email[1]);
              }
          });
  
          describe('validated TLD', () => {
  
              it('applies built-in list', () => {
  
                  expect(Address.email.analyze('test@example.com')).to.not.exist();
                  expect(Address.email.analyze('test@example.com', { tlds: true })).to.not.exist();
                  expect(Address.email.analyze('test@example.com', { tlds: { allow: true } })).to.not.exist();
              });
  
              it('ignores built-in list', () => {
  
                  expect(Address.email.analyze('test@example.invalid-top', { tlds: false })).to.not.exist();
              });
  
              it('denies listed tls', () => {
  
                  expect(Address.email.analyze('test@example.com', { tlds: { deny: new Set(['test']) } })).to.not.exist();
                  expect(Address.email.analyze('test@example.com', { tlds: { deny: new Set(['com']) } })).to.equal({ error: 'Domain uses forbidden TLD' });
              });
          });
      });
  
      describe('isValid()', () => {
  
          it('validates email', () => {
  
              // Tests adapted from https://github.com/hapijs/isemail
              // Copyright (c) 2008-2019, Eli Skeggs, Dominic Sayers, GlobeSherpa
  
              const tests = [
                  ['\r', false],
                  ['test', false],
                  ['@', false],
                  ['test@', false],
                  ['test@io', false],
                  ['test@io', true, { minDomainSegments: 1 }],
                  ['@io', false],
                  ['@iana.org', false],
                  ['test@iana.org', true],
                  ['test@nominet.org.uk', true],
                  ['test@about.museum', true],
                  ['a@iana.org', true],
                  ['êjness@iana.org', true],
                  ['ñoñó1234@iana.org', true],
                  ['ñoñó1234@something.com', true],
                  ['伊昭傑@郵件.商務', true, { tlds: { allow: new Set([Punycode.toASCII('商務')]) } }],
                  ['\ud801\udc37\ud852\udf62@iana.org', true],
                  ['test.test@iana.org', true],
                  ['.test@iana.org', false],
                  ['test.@iana.org', false],
                  ['test..iana.org', false],
                  ['test_exa-mple.com', false],
                  ['!#$%&`*+/=?^`{|}~@iana.org', true],
                  ['test\\@test@iana.org', false],
                  ['123@iana.org', true],
                  ['test@123.com', true],
                  ['test@iana.123', false],
                  ['test@255.255.255.255', false],
                  ['abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm@iana.org', true],
                  ['abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklmn@iana.org', false],
                  ['\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06@iana.org', false],
                  ['test@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm', false],
                  ['test@\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06.org', true],
                  ['test@abcdefghijklmnopqrstuvwxyzabcdefghijklmno\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06.org', false],
                  ['test@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm.com', false],
                  ['test@mason-dixon.com', true],
                  ['test@-iana.org', false],
                  ['test@iana-.com', false],
                  ['test@.iana.org', false],
                  ['test@iana.org.', false],
                  ['test@iana..com', false],
                  ['abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmno', false],
                  ['abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.\ud83d\ude06\ud83d\ude06\ud83d\ude06\ud83d\ude06', false],
                  ['abcdef@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdef.hijklmnopqrstuv', false],
                  ['abcdef@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghi.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcd\ud83d\ude06', false],
                  ['abcdef@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghi.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz\ud83d\ude06', false],
                  ['a@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijkl.hijk', false],
                  ['a@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijkl.\ud83d\ude06', false],
                  ['\"\r', false],
                  ['\"test\"@iana.org', false],
                  ['\"\"@iana.org', false],
                  ['\"\"\"@iana.org', false],
                  ['\"\\a\"@iana.org', false],
                  ['\"\\\"\"@iana.org', false],
                  ['\"\\\"@iana.org', false],
                  ['\"\\\\\"@iana.org', false],
                  ['test\"@iana.org', false],
                  ['\"test@iana.org', false],
                  ['\"test\"test@iana.org', false],
                  ['test\"text\"@iana.org', false],
                  ['\"test\"\"test\"@iana.org', false],
                  ['\"test\".\"test\"@iana.org', false],
                  ['\"test\\ test\"@iana.org', false],
                  ['\"test\".test@iana.org', false],
                  ['\"test\u0000\"@iana.org', false],
                  ['\"test\\\u0000\"@iana.org', false],
                  ['\"test\r\n test\"@iana.org', false],
                  ['\"abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefghj\"@iana.org', false],
                  ['\"abcdefghijklmnopqrstuvwxyz abcdefghijklmnopqrstuvwxyz abcdefg\\h\"@iana.org', false],
                  ['test@[255.255.255.255]', false],
                  ['test@a[255.255.255.255]', false],
                  ['test@[255.255.255]', false],
                  ['test@[255.255.255.255.255]', false],
                  ['test@[255.255.255.256]', false],
                  ['test@[1111:2222:3333:4444:5555:6666:7777:8888]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666:7777]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666:7777:8888]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666:7777:8888:9999]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666:7777:888G]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666::8888]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555::8888]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666::7777:8888]', false],
                  ['test@[IPv6::3333:4444:5555:6666:7777:8888]', false],
                  ['test@[IPv6:::3333:4444:5555:6666:7777:8888]', false],
                  ['test@[IPv6:1111::4444:5555::8888]', false],
                  ['test@[IPv6:::]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:255.255.255.255]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666:255.255.255.255]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666:7777:255.255.255.255]', false],
                  ['test@[IPv6:1111:2222:3333:4444::255.255.255.255]', false],
                  ['test@[IPv6:1111:2222:3333:4444:5555:6666::255.255.255.255]', false],
                  ['test@[IPv6:1111:2222:3333:4444:::255.255.255.255]', false],
                  ['test@[IPv6::255.255.255.255]', false],
                  ['test@[255.255.255.255].local', false],
                  ['test@local.[255.255.255.255]', false],
                  ['test@local.[255.255.255.255].local', false],
                  ['test@local.(comment)[255.255.255.255].local', false],
                  ['test@local. [255.255.255.255].local', false],
                  ['test@local.[255.255.255.255](comment).local', false],
                  ['test@local.[255.255.255.255] .local', false],
                  [' test @iana.org', false],
                  ['test@ iana .com', false],
                  ['test . test@iana.org', false],
                  ['\r\n test@iana.org', false],
                  ['\r\n \r\n test@iana.org', false],
                  ['(\r', false],
                  ['(comment)test@iana.org', false],
                  ['((comment)test@iana.org', false],
                  ['(comment(comment))test@iana.org', false],
                  ['test@(comment)iana.org', false],
                  ['test(comment)@iana.org', false],
                  ['test(comment)test@iana.org', false],
                  ['test@(comment)[255.255.255.255]', false],
                  ['(comment)abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghiklm@iana.org', false],
                  ['test@(comment)abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.com', false],
                  ['(comment)test@abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefg.abcdefghijklmnopqrstuvwxyzabcdefghijk.abcdefghijklmnopqrst', false],
                  ['test@iana.org\n', false],
                  ['xn--test@iana.org', true],
                  ['test@iana.org-', false],
                  ['\"test@iana.org', false],
                  ['(test@iana.org', false],
                  ['test@(iana.org', false],
                  ['test@[1.2.3.4', false],
                  ['\"test\\\"@iana.org', false],
                  ['(comment\\)test@iana.org', false],
                  ['test@iana.org(comment\\)', false],
                  ['test@iana.org(comment\\', false],
                  ['test@[RFC-5322-domain-literal]', false],
                  ['test@[RFC-5322-郵件ñó-domain-literal]', false],
                  ['test@[RFC-5322]-domain-literal]', false],
                  ['test@[RFC-5322].domain-literal]', false],
                  ['test@[RFC-5322-[domain-literal]', false],
                  ['test@[', false],
                  ['test@[\u0007]', false],
                  ['test@[RFC-5322-\\\u0007-domain-literal]', false],
                  ['test@[RFC-5322-\\\t-domain-literal]', false],
                  ['test@[RFC-5322-\\]-domain-literal]', false],
                  ['test@[RFC-5322-\\郵-no-domain-literal]', false],
                  ['test@[RFC-5322--domain-literal]', false],
                  ['test@[RFC-5322-domain-literal\\]', false],
                  ['test@[RFC-5322-domain-literal\\', false],
                  ['test@[RFC 5322 domain literal]', false],
                  ['test@[RFC-5322-domain-literal] (comment)', false],
                  ['@iana.org', false],
                  ['test@.org', false],
                  ['\"\"@iana.org', false],
                  ['\"\"@iana.org', false],
                  ['\"\\\"@iana.org', false],
                  ['()test@iana.org', false],
                  ['()test@iana.org', false],
                  ['test@iana.org\r', false],
                  ['\rtest@iana.org', false],
                  ['\"\rtest\"@iana.org', false],
                  ['(\r)test@iana.org', false],
                  ['test@iana.org(\r)', false],
                  ['test@<iana>.org', false],
                  ['\ntest@iana.org', false],
                  ['\"\n\"@iana.org', false],
                  ['\"\\\n\"@iana.org', false],
                  ['(\n)test@iana.org', false],
                  ['\u0007@iana.org', false],
                  ['test@\u0007.org', false],
                  ['\"\u0007\"@iana.org', false],
                  ['\"\\\u0007\"@iana.org', false],
                  ['(\u0007)test@iana.org', false],
                  ['\r\ntest@iana.org', false],
                  ['\r\n \r\ntest@iana.org', false],
                  [' \r\ntest@iana.org', false],
                  [' \r\n test@iana.org', false],
                  [' \r\n \r\ntest@iana.org', false],
                  [' \r\n\r\ntest@iana.org', false],
                  [' \r\n\r\n test@iana.org', false],
                  ['test@iana.org\r\n ', false],
                  ['test@iana.org\r\n \r\n ', false],
                  ['test@iana.org\r\n', false],
                  ['test@iana.org \r', false],
                  ['test@iana.org\r\n \r\n', false],
                  ['test@iana.org \r\n', false],
                  ['test@iana.org \r\n ', false],
                  ['test@iana.org \r\n \r\n', false],
                  ['test@iana.org \r\n\r\n', false],
                  ['test@iana.org \r\n\r\n ', false],
                  ['test@iana. org', false],
                  ['test@[\r', false],
                  ['test@[\r\n', false],
                  [' test@iana.org', false],
                  ['test@iana.org ', false],
                  ['test@[IPv6:1::2:]', false],
                  ['\"test\\\u0094\"@iana.org', false],
                  ['test@iana/icann.org', false],
                  ['test@iana!icann.org', false],
                  ['test@iana?icann.org', false],
                  ['test@iana^icann.org', false],
                  ['test@iana{icann}.org', false],
                  ['test.(comment)test@iana.org', false],
                  ['test@iana.(comment)org', false],
                  ['test@iana(comment)iana.org', false],
                  ['(comment\r\n comment)test@iana.org', false],
                  ['test@org', true, { minDomainSegments: 1 }],
                  ['test\ud800@invalid', false],
                  ['\"\ud800\"@invalid', false],
                  ['\"\\\ud800\"@invalid', false],
                  ['(\ud800)thing@invalid', false],
                  ['\"\\\ud800\"@invalid', false],
                  ['test@\ud800\udfffñoñó郵件ñoñó郵件.郵件ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.noñó郵件ñoñó郵.商務', false, { tlds: { allow: new Set([Punycode.toASCII('商務')]) } }],
                  ['test@\ud800\udfffñoñó郵件ñoñó郵件.郵件ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.ñoñó郵件ñoñó郵件.oñó郵件ñoñó郵件ñoñó郵件.商務', false, { tlds: { allow: new Set([Punycode.toASCII('商務')]) } }],
                  ['test@ñoñoñó郵件\ud83d\ude06ñoñ.oñó郵件\uc138ñoñ.oñó郵件\u0644\u4eec\u010dñoñoñó郵件\u05dcño.ñoñó郵件\u092f\u672cñoñoñó郵件\uc138añoñ.oñó郵件\ud83d\ude06bc\uc138郵\ud83d\ude06ño.ñoñó郵件ñoñoñó郵件\ud83d\ude06ñoñoñó郵件\uc138ñoñ.oñó郵件\u0644\u4eecñoñoñó.郵件\ud83d\ude06ñoñoñó郵件郵\uc138ñoñoñó郵件\u0644\u4eecñoñoñó郵件.\ud83d\ude06ñoñoñó郵件郵\uc138\u0644\u4eec.郵件\ud83d\ude06ñoñoñó郵.件郵\uc138\u4eec\ud83d\ude06ñoñoñó件郵\uc138ñoñoñó郵件', false, { tlds: { allow: new Set([Punycode.toASCII('商務')]) } }],
                  ['test@ñoñó郵件ñoñó郵件ñoñó郵件ñoñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件ñoñó郵件.商務', false, { tlds: { allow: new Set([Punycode.toASCII('商務')]) } }],
                  ['\ud83d\ude06ñoñó郵件ñoñó郵件ñoñó\ud83d\ude06郵件ñoñoñó郵@\ud83d\ude06郵件ñoñó郵件ñoñó.\ud83d\ude06郵件ñoñó郵件ñoñó.\ud83d\ude06郵件ñoñó郵件ñoñó.郵件ñoñó郵件ñoñó\ud83d\ude06.郵件ñoñó郵件ñoñó.郵件ñoñó郵件.ñoñó郵件ñoñó.郵件ñoñó郵件.\ud83d\ude06郵件ñoñó郵件ñoñó.\ud83d\ude06郵件ñoñó郵件ñoñó.\ud83d\ude06商務.郵件ñoñó郵件ñoñó郵件.\ud83d\ude06商務.\ud83d\ude06商務.\ud83d\ude06商務', false, { tlds: { allow: new Set([Punycode.toASCII('商務')]) } }],
                  ['test@[\0', false],
                  ['(\0)test@example.com', false],
                  ['shouldbe@invalid', false],
                  ['shouldbe@INVALID', false],
                  ['shouldbe@example.com', true],
                  ['shouldbe@example.COM', true],
                  ['apple-touch-icon-60x60@2x.png', false],
                  ['shouldbe@XN--UNUP4Y', true, { minDomainSegments: 1 }],
                  ['shouldbe@xn--unup4y', true, { minDomainSegments: 1 }],
                  ['shouldbe@\u6e38\u620f', true, { minDomainSegments: 1 }],
                  ['æøå', false],
                  ['1234567890abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvw@xyz.com', true, { ignoreLength: true }]
              ];
  
              for (let i = 0; i < tests.length; ++i) {
                  const email = tests[i];
                  const valid = Address.email.isValid(email[0], email[2]);
                  const result = email[1];
  
                  if (valid !== result) {
                      const outcome = Address.email.analyze(email[0], email[2]);
                      if (outcome) {
                          console.log(i, email[0], outcome.error);
                      }
                      else {
                          console.log(i, email[0]);
                      }
                  }
  
                  expect(valid).to.equal(result);
              }
          });
      });
  });
  
  describe('domain', () => {
  
      it('available as direct require', () => {
  
          expect(require('../lib/domain').isValid('example.com')).to.be.true();
      });
  
      describe('analyze()', () => {
  
          it('identifies error', () => {
  
              const tests = [
                  ['', 'Domain must be a non-empty string'],
                  ['êiana.org', 'Domain contains forbidden Unicode characters', { allowUnicode: false }],
                  ['abcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyzabcdefghijklmnopqrstuvwxyz.com', 'Domain too long'],
                  ['com', 'Domain lacks the minimum required number of segments'],
                  ['x.no-such-tld', 'Domain uses forbidden TLD'],
                  ['example..com', 'Domain contains empty dot-separated segment'],
                  ['1234567890123456789012345678901234567890123456789012345678901234567890.com', 'Domain contains dot-separated segment that is too long'],
                  ['example+.com', 'Domain contains invalid character', { tlds: false }],
                  ['example.com_', 'Domain contains invalid tld character', { tlds: false }]
              ];
  
              for (let i = 0; i < tests.length; ++i) {
                  const domain = tests[i];
                  const output = Address.domain.analyze(domain[0], domain[2]);
                  const result = domain[1];
  
                  if (!output ||
                      output.error !== result) {
  
                      console.log(i, domain[0]);
                  }
  
                  expect(output.error).to.equal(result);
              }
          });
  
          it('validates options', () => {
  
              const tests = [
                  ['example.com', 'Invalid options: tlds must be a boolean or an object', { tlds: 1 }],
                  ['example.com', 'Invalid options: tlds.allow must be a Set object or true', { tlds: { allow: ['test'] } }],
                  ['example.com', 'Invalid options: tlds.deny must be a Set object', { tlds: { deny: ['test'] } }],
                  ['example.com', 'Invalid options: cannot specify both tlds.allow and tlds.deny lists', { tlds: { allow: new Set(), deny: new Set() } }],
                  [1, 'Invalid input: domain must be a string']
              ];
  
              for (let i = 0; i < tests.length; ++i) {
                  const domain = tests[i];
                  expect(() => Address.domain.analyze(domain[0], domain[2])).to.throw(domain[1]);
              }
          });
      });
  
      describe('isValid()', () => {
  
          it('validates domain', () => {
  
              const tests = [
                  ['\r', false],
                  ['test', false],
                  ['@', false],
                  ['iana.org', true],
                  ['nominet.org.uk', true],
                  ['about.museum', true],
                  ['x.商務', true, { tlds: { allow: new Set([Punycode.toASCII('商務')]) } }],
                  ['iana.123', false],
                  ['255.255.255.255', false],
                  ['XN--UNUP4Y', true, { minDomainSegments: 1 }]
              ];
  
              for (let i = 0; i < tests.length; ++i) {
                  const domain = tests[i];
                  const valid = Address.domain.isValid(domain[0], domain[2]);
                  const result = domain[1];
  
                  if (valid !== result) {
                      const outcome = Address.domain.analyze(domain[0], domain[2]);
                      if (outcome) {
                          console.log(i, domain[0], outcome.error);
                      }
                      else {
                          console.log(i, domain[0]);
                      }
                  }
  
                  expect(valid).to.equal(result);
              }
          });
      });
  });
  