app/config/testing/cache.php
<?php
return array(
/*
|--------------------------------------------------------------------------
| Default Cache Driver
|--------------------------------------------------------------------------
|
| This option controls the default cache "driver" that will be used when
| using the Caching library. Of course, you may use other drivers any
| time you wish. This is the default when another is not specified.
|
| Supported: "file", "database", "apc", "memcached", "redis", "array"
|
*/
'driver' => 'array',
);