@dohasys/lib-javascript-bra-cpf-cnpj/tests/cnpj.test.js

Uma lib portando o código do repositório https://github.com/carvalhoviniciusluiz/cpf-cnpj-validator de typescript para javascript.

const { cnpj } = require('../src')

describe('CNPJ', () => {
  test('números de listas negras', () => {
    expect(cnpj.isValid('00000000000000')).toBeFalsy()
    expect(cnpj.isValid('11111111111111')).toBeFalsy()
    expect(cnpj.isValid('22222222222222')).toBeFalsy()
    expect(cnpj.isValid('33333333333333')).toBeFalsy()
    expect(cnpj.isValid('44444444444444')).toBeFalsy()
    expect(cnpj.isValid('55555555555555')).toBeFalsy()
    expect(cnpj.isValid('66666666666666')).toBeFalsy()
    expect(cnpj.isValid('77777777777777')).toBeFalsy()
    expect(cnpj.isValid('88888888888888')).toBeFalsy()
    expect(cnpj.isValid('99999999999999')).toBeFalsy()
  })

  test('rejeita valores falsos', () => {
    expect(cnpj.isValid('')).toBeFalsy()
    expect(cnpj.isValid(null)).toBeFalsy()
    expect(cnpj.isValid(undefined)).toBeFalsy()
  })

  test('valida strings formatadas', () => {
    expect(cnpj.isValid('54.550.752/0001-55')).toBeTruthy()
  })

  test('valida strings não formatadas', () => {
    expect(cnpj.isValid('54550752000155')).toBeTruthy()
  })

  test('valida strings confusas', () => {
    expect(cnpj.isValid('54550[752#0001..$55')).toBeTruthy()
  })

  test('valida cadeias de caracteres', () => {
    expect(cnpj.isValid('54550[752#0001..$55', true)).toBeFalsy()
    expect(cnpj.isValid('54.550.752/0001-55', true)).toBeTruthy()
    expect(cnpj.isValid('54550752000155', true)).toBeTruthy()
  })

  test('retorna número não formatado', () => {
    var number = cnpj.strip('54550[752#0001..$55')
    expect(number).toEqual('54550752000155')
  })

  test('retorna número formatado', () => {
    var number = cnpj.format('54550752000155')
    expect(number).toEqual('54.550.752/0001-55')
  })

  test('gera número formatado', () => {
    var number = cnpj.generate(true)

    expect(number).toMatch(/^(\d{2}).(\d{3}).(\d{3})\/(\d{4})-(\d{2})$/)
    expect(cnpj.isValid(number)).toBeTruthy()
  })

  test('gera número não formatado', () => {
    var number = cnpj.generate()

    expect(number).toMatch(/^(\d{2})(\d{3})(\d{3})(\d{4})(\d{2})$/)
    expect(cnpj.isValid(number)).toBeTruthy()
  })
})