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luminos_contracts/support/interacts_with_data/contains/
hashmap.rs

1use std::collections::HashMap;
2
3use super::super::{Contains, InteractsWithData, IntoData};
4
5impl<K: Eq + std::hash::Hash, V> Contains<K> for HashMap<K, V> {
6    fn contains_item(&self, key: &K) -> bool {
7        self.contains_key(key)
8    }
9}
10
11impl<K: Eq + std::hash::Hash, V> InteractsWithData for HashMap<K, V> {
12    type Value = HashMap<K, V>;
13    type Item = K;
14
15    fn data(&self) -> &Self::Value {
16        self
17    }
18}
19
20#[cfg(test)]
21mod tests {
22    use super::*;
23
24    #[test]
25    fn test_hashmap_interacts_with_data() {
26        let mut map = HashMap::new();
27        map.insert("a", 1);
28        map.insert("b", 2);
29
30        let expected_map = HashMap::from([("a", 1), ("b", 2)]);
31        assert_eq!(map.all(), expected_map);
32        
33        assert!(map.exists(&"b")); 
34        assert!(!map.exists(&"c")); 
35    }
36}