phpunit ошибка Could not open input file: phpunit\phpunit.php

[DobrininDmitrii]

Установил, по мануалу composer, затем phpunit, но при попытке работы с phpunit, даже просто --version - выдаёт ошибку Could not open input file: phpunit\phpunit.php
посмотрел в папке, действительно такого файла нет, есть только просто файл phpunit - он с php кодом,
переименование его в phpunit.php тоже результата не даёт - вылазиют ошибки
Fatal error: Uncaught Error: Class 'PHPUnit_TextUI_Command' not found in C:\OpenServer\domains\phptests2\phpunit\phpunit.php on line 51
Error: Class 'PHPUnit_TextUI_Command' not found in C:\OpenServer\domains\phptests2\phpunit\phpunit.php on line 51

[DobrininDmitrii]

Напишу порядок действий
в консоли os перешёл в папку сайта затем
$ composer init
You are running composer with xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug
Warning: This development build of composer is over 60 days old. It is recommended to update it by running "c:\openserver\modules\php\PHP-7-x64\composer.phar self-update" to get the latest version.

так выгядит composer.json
{
"name": "user/p3",
"require": {}
}

$ composer install
You are running composer with xdebug enabled. This has a major impact on runtime performance. See https://getcomposer.org/xdebug
Warning: This development build of composer is over 60 days old. It is recommended to update it by running "c:\openserver\modules\php\PHP-7-x64\composer.phar self-update" to get the latest version.
Loading composer repositories with package information
Updating dependencies (including require-dev)
Nothing to install or update
Generating autoload files

затем
composer create-project phpunit/phpunit phpunit & echo @php -d output_buffering=0 phpunit\phpunit.php %*>phpunit.bat

$ phpunit --version
Could not open input file: phpunit\phpunit.php

[KonstantinFedorov]

Та же проблема. Кто-то знает решение?

PS
переименование в phpunit.php вроде помогло. так и оставить?