function test_has_region()
 {
     // UK
     $country = new WPSC_Country(self::COUNTRY_ID_WITHOUT_REGIONS);
     $has_region = $country->has_region(REGION_ID);
     $this->assertFalse($has_region);
     // Oregon is not in the UK
     $has_region = $country->has_region(-1);
     $this->assertFalse($has_region);
     // Non-existent region is not in the UK
     // USA
     $country = new WPSC_Country(self::COUNTRY_ID_WITH_REGIONS);
     $has_region = $country->has_region(REGION_ID);
     $this->assertTrue($has_region);
     // Oregon is in the USA
     $has_region = $country->has_region(self::REGION_NAME);
     $this->assertTrue($has_region);
     // Oregon is in the USA
     $has_region = $country->has_region(self::INVALID_REGION_NAME);
     $this->assertFalse($has_region);
     // Oregano is not
     $has_region = $country->has_region(-1);
     $this->assertFalse($has_region);
     // Imaginary state is not in the USA
 }
/**
 * Update any values dependant on billing country
 *
 * @since 3.8.14
 *
 * @access private
 * @param mixed $meta_value Optional. Metadata value.
 * @param string $meta_key Metadata name.
 * @param int $visitor_id visitor ID
 * @return none
*/
function _wpsc_updated_visitor_meta_billingcountry($meta_value, $meta_key, $visitor_id)
{
    $old_billing_state = wpsc_get_visitor_meta($visitor_id, 'billingstate', true);
    $old_billing_region = wpsc_get_visitor_meta($visitor_id, 'billingregion', true);
    if (!empty($meta_value)) {
        // check the current state and region values, if either isn't valid for the new country delete them
        $wpsc_country = new WPSC_Country($meta_value);
        if (!empty($old_billing_state) && $wpsc_country->has_regions() && !$wpsc_country->has_region($old_billing_state)) {
            wpsc_delete_visitor_meta($visitor_id, 'billingstate');
        }
        if (!empty($old_billing_region) && $wpsc_country->has_regions() && !$wpsc_country->has_region($old_billing_region)) {
            wpsc_delete_visitor_meta($visitor_id, 'billingregion');
        }
    } else {
        wpsc_delete_visitor_meta($visitor_id, 'billingstate');
        wpsc_delete_visitor_meta($visitor_id, 'billingregion');
    }
}