O pacote helpers disponibiliza funcionalidades comuns que podem ser usadas em qualquer projeto PHP 7.

$ composer require motamonteiro/helpers

use MotaMonteiro\Helpers\Traits\UtilHelper;
 
class MyClass
{
    use UtilHelper;
    
    public function myFunction()
    {
        $cpf = '43354377224';
        if ($this->validarCpf($cpf)) {
            ...
        }
    }
    
    public function myOtherFunction()
    {
        $data = '21/10/1982';
        if ($this->validarDataFormatoBr($data)) {
            ...
        }
    }
}

use MotaMonteiro\Helpers\UtilHelper;
 
class MyClass
{
    public function myFunction()
    {
        $util = new UtilHelper();
        
        $cpf = '43354377224';
        if ($util->validarCpf($cpf))
        {
            ...
        }
    }
}

Para efetuar os testes basta executar o comando abaixo no terminal:

$ ./vendor/bin/phpunit

Exemplo de saída:

PHPUnit 5.7.21 by Sebastian Bergmann and contributors.

Runtime:       PHP 7.1.6 with Xdebug 2.5.4
Configuration: /Users/alexandre/Documents/github/motamonteiro/helpers/phpunit.xml

..........................                                        26 / 26 (100%)

Time: 411 ms, Memory: 6.00MB

OK (26 tests, 26 assertions)

Generating code coverage report in Clover XML format ... done

https://packagist.org/packages/motamonteiro/helpers

MIT License

Copyright (c) 2017

Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions:

The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software.

THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.