Use random hasher state for number hashing test

Author: dtolnay

tests/test.rs

@@ -30,12 +30,11 @@ use serde_json::{
     from_reader, from_slice, from_str, from_value, json, to_string, to_string_pretty, to_value,
     to_vec, Deserializer, Number, Value,
 };
-use std::collections::hash_map::DefaultHasher;
 use std::collections::BTreeMap;
 #[cfg(feature = "raw_value")]
 use std::collections::HashMap;
 use std::fmt::{self, Debug};
-use std::hash::{Hash, Hasher};
+use std::hash::{BuildHasher, Hash, Hasher};
 use std::io;
 use std::iter;
 use std::marker::PhantomData;
@@ -2490,11 +2489,12 @@ fn test_value_into_deserializer() {
 
 #[test]
 fn hash_positive_and_negative_zero() {
-    fn hash(obj: impl Hash) -> u64 {
-        let mut hasher = DefaultHasher::new();
+    let rand = std::hash::RandomState::new();
+    let hash = |obj: Number| -> u64 {
+        let mut hasher = rand.build_hasher();
         obj.hash(&mut hasher);
         hasher.finish()
-    }
+    };
 
     let k1 = serde_json::from_str::<Number>("0.0").unwrap();
     let k2 = serde_json::from_str::<Number>("-0.0").unwrap();