public function data_populate_options() {
    return array(
      array(
        array(),
        array(
          // Random options to check.
          'posts_per_rss'    => '10',
          'rss_use_excerpt'  => '0',
          'mailserver_url'   => 'mail.example.com',
          'mailserver_login' => 'login@example.com',
          'mailserver_pass'  => 'password',
        ),
      ),
      array(
        array(
          'posts_per_rss'   => '7',
          'rss_use_excerpt' => '1',
        ),
        array(
          // Random options to check.
          'posts_per_rss'    => '7',
          'rss_use_excerpt'  => '1',
          'mailserver_url'   => 'mail.example.com',
          'mailserver_login' => 'login@example.com',
          'mailserver_pass'  => 'password',
        ),
      ),
      array(
        array(
          'custom_option' => '1',
        ),
        array(
          // Random options to check.
          'custom_option'    => '1',
          'posts_per_rss'    => '10',
          'rss_use_excerpt'  => '0',
          'mailserver_url'   => 'mail.example.com',
          'mailserver_login' => 'login@example.com',
          'mailserver_pass'  => 'password',
        ),
      ),
      array(
        array(
          'use_quicktags' => '1',
        ),
        array(
          // This option is disallowed and should never exist.
          'use_quicktags' => false,
        ),
      ),
      array(
        array(
          'rss_0123456789abcdef0123456789abcdef' => '1',
          'rss_0123456789abcdef0123456789abcdef_ts' => '1',
        ),
        array(
          // These options would be obsolete magpie cache data and should never exist.
          'rss_0123456789abcdef0123456789abcdef' => false,
          'rss_0123456789abcdef0123456789abcdef_ts' => false,
        ),
      ),
    );
  }