gtech-cpf-validator/test/index.spec.js

Valida o número do CPF através dos dígitos verificadores (utilizando a regra matemática específica) e retornar true ou false de acordo com o caso.

const chai = require('chai');
const assert = chai.assert;
const library = require('../index');

describe('CPF validator', () => {
  describe('When CPF is valid', () => {
    it('Should accept CPF string with dashes and dots', () => {
      const cpf = '747.376.750-08';
      const isValid = library.cpfValidator(cpf);
      assert.isTrue(isValid, 'should return true');
    });

    it('Should accept number s only string', () => {
      const cpf = '74737675008';
      const isValid = library.cpfValidator(cpf);
      assert.isTrue(isValid, 'should return true');
    });
    
    it('Should accept just numbers', () => {
      const cpf = 74737675008;
      const isValid = library.cpfValidator(cpf);
      assert.isTrue(isValid, 'should return true');
    });

    it('When division of a digit results in 10 remain should be zero', () => {
      const cpf = '747.376.750-08';
      const isValid = library.cpfValidator(cpf);
      assert.isTrue(isValid, 'should return true');
    });
  });

  describe('When CPF is not valid', () => {
    it('When all numbers are zeros', () => {
      const cpf = '000.000.000-00';
      const isValid = library.cpfValidator(cpf);
      assert.isFalse(isValid, 'should return false');
    });

    it('When all numbers are ones', () => {
      const cpf = '111.111.111-11';
      const isValid = library.cpfValidator(cpf);
      assert.isFalse(isValid, 'should return false');
    });

    it('When all numbers are fives', () => {
      const cpf = '55555555555';
      const isValid = library.cpfValidator(cpf);
      assert.isFalse(isValid, 'should return false');
    });

    it('When all numbers are nines', () => {
      const cpf = '99999999999';
      const isValid = library.cpfValidator(cpf);
      assert.isFalse(isValid, 'should return false');
    });

    it('When any char is not number', () => {
      const cpf = 'meucpf74737675008';
      const isValid = library.cpfValidator(cpf);
      assert.isFalse(isValid, 'should return false');
    });

    it('Char quantity smaller than 11', () => {
      const cpf = '3887683102';
      const isValid = library.cpfValidator(cpf);
      assert.isFalse(isValid, 'should return false');
    });

    it('Char quantity greater than 11', () => {
      const cpf = '972222870608';
      const isValid = library.cpfValidator(cpf);
      assert.isFalse(isValid, 'should return false');
    });
  });
});