The project involves installation using composer
composer require telegins/atol-sdk-api-v5PHPUnit is required for the tests to work, to install it, you need to run the command
composer require phpunit/phpunit
In order to run the integration tests, you need to copy the file tests/integration/MerchantSettings.php.sample as
tests/integration/MerchantSettings.php Execute the command from the root of the project
vendor/bin/phpunit vendor/payprocessing/atol-online/tests/integration
You can find examples here tests/integration