WC_Shipping_Zones::delete_zone PHP Method

    public static function delete_zone($zone_id)
    {
        $zone = new WC_Shipping_Zone($zone_id);
        $zone->delete();
    }

 /**
  * Test: WC_Shipping_Zones::delete_zone
  */
 public function test_delete_zone()
 {
     // Setup
     WC_Helper_Shipping_Zones::create_mock_zones();
     // Test
     WC_Shipping_Zones::delete_zone(1);
     $zones = WC_Shipping_Zones::get_zones();
     // Assert
     $this->assertTrue(3 === sizeof($zones));
     // Clean
     WC_Helper_Shipping_Zones::remove_mock_zones();
 }