use drt_sc::storage::{ mappers::{MapMapper, StorageClearable, StorageMapper}, StorageKey, }; use drt_sc_scenario::api::SingleTxApi; fn create_map() -> MapMapper { let base_key = StorageKey::new(&b"my_map"[..]); MapMapper::new(base_key) } #[test] fn test_map_simple() { let mut map = create_map(); assert_eq!(map.len(), 0); assert_eq!(map.get(&42), None); assert_eq!(map.insert(42, 142), None); assert_eq!(map.len(), 1); assert!(map.contains_key(&42)); assert!(!map.contains_key(&50)); assert_eq!(map.insert(42, 242), Some(142)); assert_eq!(map.len(), 1); assert_eq!(map.get(&42), Some(242)); } #[test] fn test_map_remove() { let mut map = create_map(); map.insert(42, 142); map.insert(43, 143); assert_eq!(map.len(), 2); assert_eq!(map.remove(&42), Some(142)); assert_eq!(map.remove(&42), None); assert_eq!(map.len(), 1); } #[test] fn test_map_clear() { let mut map = create_map(); map.insert(420, 421); map.insert(422, 423); assert_eq!(map.len(), 2); map.clear(); assert_eq!(map.len(), 0); assert!(map.is_empty()); }