PHPSpec加载文件但不加载目录

This commands works (specify file):

./vendor/bin/phpspec.php Spec/Model/Entity/DescribeCustomer.php -f d -c --bootstrap module/Application/tests/Bootstrap.php

But using the directory does not:

./vendor/bin/phpspec.php Spec/ -f d -c --bootstrap module/Application/tests/Bootstrap.php

Composer file

"require-dev": {
    "phpspec/phpspec": "*"
}

Version

./vendor/bin/phpspec.php --version 
1.4.2