Derive Clone for FxSeededState

src/random_state.rs

@@ -65,7 +65,6 @@ mod tests {
 
     #[test]
     fn cloned_random_states_are_equal() {
-        // The standard library's `RandomState` derives `Clone` without updating the seed.
         let a = FxHashMapRand::<&str, u32>::default();
         let b = a.clone();
 

src/seeded_state.rs

@@ -18,6 +18,7 @@ pub type FxHashSetSeed<V> = std::collections::HashSet<V, FxSeededState>;
 /// map.insert(15, 610);
 /// assert_eq!(map[&15], 610);
 /// ```
+#[derive(Clone)]
 pub struct FxSeededState {
     seed: usize,
 }
@@ -43,6 +44,18 @@ mod tests {
 
     use crate::FxSeededState;
 
+    #[test]
+    fn cloned_seeded_states_are_equal() {
+        let seed = 2;
+        let a = FxSeededState::with_seed(seed);
+        let b = a.clone();
+
+        assert_eq!(a.seed, b.seed);
+        assert_eq!(a.seed, seed);
+
+        assert_eq!(a.build_hasher().hash, b.build_hasher().hash);
+    }
+
     #[test]
     fn same_seed_produces_same_hasher() {
         let seed = 1;