Fix tests

Author: alexcrichton

src/json.rs

@@ -3779,8 +3779,8 @@ mod tests {
         use std::collections::{HashMap,BTreeMap};
         use super::ToJson;
 
-        let array2 = Array(vec!(U64(1), U64(2)));
-        let array3 = Array(vec!(U64(1), U64(2), U64(3)));
+        let array2 = Array(vec!(I64(1), I64(2)));
+        let array3 = Array(vec!(I64(1), I64(2), I64(3)));
         let object = {
             let mut tree_map = BTreeMap::new();
             tree_map.insert("a".to_string(), U64(1));
@@ -3816,15 +3816,15 @@ mod tests {
         assert_eq!((vec![1, 2]).to_json(), array2);
         assert_eq!(vec!(1, 2, 3).to_json(), array3);
         let mut tree_map = BTreeMap::new();
-        tree_map.insert("a".to_string(), 1);
+        tree_map.insert("a".to_string(), 1 as u32);
         tree_map.insert("b".to_string(), 2);
         assert_eq!(tree_map.to_json(), object);
         let mut hash_map = HashMap::new();
-        hash_map.insert("a".to_string(), 1);
+        hash_map.insert("a".to_string(), 1 as u32);
         hash_map.insert("b".to_string(), 2);
         assert_eq!(hash_map.to_json(), object);
         assert_eq!(Some(15).to_json(), I64(15));
-        assert_eq!(Some(15).to_json(), U64(15));
+        assert_eq!(Some(15 as u32).to_json(), U64(15));
         assert_eq!(None::<isize>.to_json(), Null);
     }