index.test.js

const expect = require('chai').expect;
const lib = require('./index');

describe('diacritic-regex', function () {

  describe('toRegex', function () {

    it('changes string to regex group', function () {

      expect(lib.toRegex()('abe').toString()).to.equal('/[' + lib.mappings.a + ']b[' + lib.mappings.e + ']/i')
      expect(lib.toRegex()('àbé').toString()).to.equal('/[' + lib.mappings.a + ']b[' + lib.mappings.e + ']/i')

    })

    it('returns unchanged regex when no diacritic chars', function () {

      expect(lib.toRegex()('pqrst').toString()).to.equal('/pqrst/i')

    })

    it('changes flag', function () {

      expect(lib.toRegex({ flags: 'm' })('pqrst').toString()).to.equal('/pqrst/m')

    })

    it('allows new mappings', function () {

      var tr = lib.toRegex({
        mappings: {
          '~': '/~`',
          't': 'tT'
        }
      })

      expect(tr('~lt').toString()).to.equal('/[\\/~`]l[tT]/i')
      expect(tr('~lt').test('omg `lT')).to.equal(true)

    })

  })

  describe('toString', function () {

    it('returns unchanged string when no diacritics', function () {

      expect(lib.toString()('pqrst')).to.equal('pqrst')

    })

    it('returns changed string when no diacritics', function () {

      expect(lib.toString()('pqrst')).to.equal('pqrst')

    })

    it('allows new mappings', function () {

      expect(lib.toString({
        mappings: {
          '~': '/~`',
          't': 'tT'
        }
      })('~lt')).to.equal('[/~`]l[tT]')

      expect(lib.toString({
        mappings: {
          'e': 'e'
        }
      })('e')).to.equal('e')

      var ts = lib.toString({
        mappings: {
          '*': ['\\S+'],
          'e': ['e']
        }
      });

      expect(ts('e*e')).to.equal('e\\S+e')
      expect(new RegExp(ts('jogue * bola')).test('jogue poké bola')).to.equal(true)

      ts = lib.toString({
        mappings: {
          '*': ['\\w+', '\\d+']
        }
      });

      expect(ts('e*e')).to.equal('[' + lib.mappings.e + ']\\w+\\d+[' + lib.mappings.e + ']')
      expect(new RegExp(ts('jogue * bola')).test('jogue zzzz0 bola')).to.equal(true)

      lib.mappings['&'] = 'a'
      ts = lib.toString();

      expect(new RegExp(ts('&')).test('a')).to.equal(true)
      expect(new RegExp(ts('&')).test('b')).to.equal(false)
    })

  })

})