fast-uri/test/urn-full-input.test.js

Dependency-free RFC 3986 URI toolbox

'use strict'

const test = require('tape')
const fastURI = require('..')

test('URN parsing validates the complete scheme-specific input', (t) => {
  const embedded = fastURI.parse('urn:x|foo:bar')
  t.equal(embedded.error, 'URN can not be parsed.', 'does not search for a later nid:nss substring')
  t.equal(embedded.nid, undefined, 'does not adopt the later nid')
  t.equal(embedded.nss, undefined, 'does not adopt the later nss')

  const trailing = fastURI.parse('urn:foo:bar|ignored')
  t.equal(trailing.error, 'URN can not be parsed.', 'rejects trailing input outside the RFC 2141 NSS grammar')
  t.equal(trailing.nid, undefined, 'does not return an nid from a partial match')
  t.equal(trailing.nss, undefined, 'does not return a truncated nss')

  t.end()
})

test('URN parsing preserves the complete RFC 2141 NSS', (t) => {
  const parsed = fastURI.parse('urn:foo:allowed/evil')
  t.equal(parsed.error, undefined, 'accepts slash in an RFC 2141 NSS')
  t.equal(parsed.nid, 'foo', 'parses the nid')
  t.equal(parsed.nss, 'allowed/evil', 'preserves the complete NSS')
  t.equal(fastURI.normalize('urn:foo:allowed/evil'), 'urn:foo:allowed/evil', 'normalization retains slash data')
  t.equal(fastURI.equal('urn:foo:allowed/evil', 'urn:foo:allowed'), false, 'distinct NSS values do not compare equal')

  t.end()
})

test('URN serialization preserves NSS dot segments', (t) => {
  const urnWithDotSegments = 'urn:example:a/b/../c'
  const destructiveDotSegments = 'urn:example:../../../etc/passwd'

  t.equal(fastURI.serialize(fastURI.parse(urnWithDotSegments)), urnWithDotSegments, 'parsed NSS round-trips unchanged')
  t.equal(
    fastURI.serialize({ scheme: 'urn', nid: 'example', nss: '../../../etc/passwd' }),
    destructiveDotSegments,
    'structured NSS retains leading dot segments'
  )
  t.equal(fastURI.normalize(urnWithDotSegments), urnWithDotSegments, 'normalization retains interior dot segments')
  t.equal(fastURI.normalize(destructiveDotSegments), destructiveDotSegments, 'normalization retains leading dot segments')
  t.equal(fastURI.resolve('', urnWithDotSegments), urnWithDotSegments, 'resolution retains NSS dot segments')
  t.equal(fastURI.equal(urnWithDotSegments, 'urn:example:a/c'), false, 'distinct NSS values do not compare equal')

  t.end()
})