Test with PHPUnit Laravel 5 controller with database (Mock?)

I would like to Unit test one of my controller and I'm wondering how to do that without impacting the database. Here are my files :

Route:

Route::resource('tasks', 'TasksListController');

In my TasksListController:

public function store()
{
    if (empty(Input::get('name')) || !isset(Input::get('name'))) {
        return false;
    }
    if (Task::create(Input::all())) {
        return true;
    }
    return false;
}

My form:

        <form action="/tasks" name="task" method="post">
            <input type="text" name="name" />
            <input type="submit" name="submit" value="Submit" />
            <input type="hidden" name="_token" value="<?php echo csrf_token(); ?>">
        </form>

My Unit Test:

class TasksTest extends TestCase {

    public function testAddTask()
    {
        // How can I test the task creation ?
    }
}