roles

functions.php

function add_theme_caps() {
    // gets the author role
    $role = get_role( 'testarole' );
    // create if neccesary
    if (!$role) $role = add_role('testarole', 'Testa Role'); 

    // add theme specific roles
    $role->add_cap('delete_posts');
    $role->add_cap('delete_published_posts');
    $role->add_cap('edit_posts');
    $role->add_cap('edit_published_posts');
    $role->add_cap('publish_posts');
    $role->add_cap('read');
    $role->add_cap('upload_files');
}
add_action( 'admin_init', 'add_theme_caps');