address-rfc2821/test/address.js

RFC-5321 (Envelope) email address parser

'use strict'

const assert = require('node:assert/strict')

const Address = require('../index').Address

function _check(address, user, host, original_host) {
    const a = new Address(address)
    assert.equal(a.user, user)
    assert.equal(a.host, host)
    if (original_host) {
        assert.equal(a.original_host, original_host)
    }
}

describe('good addresses pass', function () {
    it('<>', function () {
        _check('<>', '', '')
    })

    it('<postmaster>', function () {
        _check('<postmaster>', 'postmaster', '')
    })

    it('<foo@example.com>', function () {
        _check('<foo@example.com>', 'foo', 'example.com')
    })

    it('<foo+bar@example.com>', function () {
        _check('<foo+bar@example.com>', 'foo+bar', 'example.com')
    })

    it('<$foo@example.com>', function () {
        _check('<$foo@example.com>', '$foo', 'example.com')
    })

    it('<"musa_ibrah@caramail.comandrea.luger"@wifo.ac.at>', function () {
        _check(
            '<"musa_ibrah@caramail.comandrea.luger"@wifo.ac.at>',
            '"musa_ibrah@caramail.comandrea.luger"',
            'wifo.ac.at',
        )
    })

    it('foo@example.com', function () {
        _check('foo@example.com', 'foo', 'example.com')
    })

    it('<foo@foo.x.example.com>', function () {
        _check('<foo@foo.x.example.com>', 'foo', 'foo.x.example.com')
    })

    it('foo@foo.x.example.com', function () {
        _check('foo@foo.x.example.com', 'foo', 'foo.x.example.com')
    })

    it('<андрис@уайлддак.орг>', function () {
        _check(
            '<андрис@уайлддак.орг>',
            'андрис',
            'xn--80aalaxjd5d.xn--c1avg',
            'уайлддак.орг',
        )
    })
})

describe('wikipedia examples: https://en.wikipedia.org/wiki/Email_address#Internationalization_examples', function () {
    it('<Pelé@example.com>', function () {
        _check('<Pelé@example.com>', 'Pelé', 'example.com')
    })

    it('<δοκιμή@παράδειγμα.δοκιμή>', function () {
        _check(
            '<δοκιμή@παράδειγμα.δοκιμή>',
            'δοκιμή',
            'xn--hxajbheg2az3al.xn--jxalpdlp',
            'παράδειγμα.δοκιμή',
        )
    })

    it('<我買@屋企.香港>', function () {
        _check('<我買@屋企.香港>', '我買', 'xn--hoqu73a.xn--j6w193g', '屋企.香港')
    })

    it('<二ノ宮@黒川.日本>', function () {
        _check(
            '<二ノ宮@黒川.日本>',
            '二ノ宮',
            'xn--5rtw95l.xn--wgv71a',
            '黒川.日本',
        )
    })

    it('<медведь@с-балалайкой.рф>', function () {
        _check(
            '<медведь@с-балалайкой.рф>',
            'медведь',
            'xn----8sbaac5cahfb0b0a.xn--p1ai',
            'с-балалайкой.рф',
        )
    })

    it('<संपर्क@डाटामेल.भारत>', function () {
        _check(
            '<संपर्क@डाटामेल.भारत>',
            'संपर्क',
            'xn--c2bd4bq1db8d.xn--h2brj9c',
            'डाटामेल.भारत',
        )
    })
})

describe('bad addresses fail', function () {
    it('foo@example.com+bob@attacker.com', function () {
        assert.throws(function () {
            new Address('foo@example.com+bob@attacker.com')
        })
    })

    it('<user@example.com#>', function () {
        assert.throws(function () {
            new Address('<user@example.com#>')
        })
    })

    it('<user@example.com>.', function () {
        assert.throws(function () {
            new Address('<user@example.com.>')
        })
    })

    it('<foo bar@example.com>', function () {
        assert.throws(function () {
            new Address('<foo bar@example.com>')
        })
    })
})

describe('isNull', function () {
    it('positive <>', function () {
        assert.ok(new Address('<>').isNull())
    })

    it('negative', function () {
        assert.ok(!new Address('<matt@example.com>').isNull())
    })
})

describe('format()', function () {
    it('works', function () {
        const addr = new Address('<matt@example.com>')
        assert.equal(addr.user, 'matt')
        assert.equal(addr.host, 'example.com')
        assert.equal(addr.format(), '<matt@example.com>')
    })

    it('lower cases hostnames', function () {
        const addr = new Address('<matt@exAMple.com>')
        assert.equal(addr.host, 'example.com')
    })

    it('no latin escaping', function () {
        const addr = new Address('<přílišžluťoučkýkůň@přílišžluťoučkýkůň.cz>')
        assert.equal(addr.format(), '<přílišžluťoučkýkůň@přílišžluťoučkýkůň.cz>')
    })

    it('spaces inside a quoted string', function () {
        const addr = new Address('<"pří lišžlu ťoučkýkůň"@přílišžluťoučkýkůň.cz>')
        assert.equal(
            addr.format(),
            '<"pří lišžlu ťoučkýkůň"@přílišžluťoučkýkůň.cz>',
        )
    })
})