1use serde_json::{from_str, Map, Value};
2
3#[test]
4fn test_preserve_order() {
5 // Sorted order
6 #[cfg(not(feature = "preserve_order"))]
7 const EXPECTED: &[&str] = &["a", "b", "c"];
8
9 // Insertion order
10 #[cfg(feature = "preserve_order")]
11 const EXPECTED: &[&str] = &["b", "a", "c"];
12
13 let v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
14 let keys: Vec<_> = v.as_object().unwrap().keys().collect();
15 assert_eq!(keys, EXPECTED);
16}
17
18#[test]
19fn test_append() {
20 // Sorted order
21 #[cfg(not(feature = "preserve_order"))]
22 const EXPECTED: &[&str] = &["a", "b", "c"];
23
24 // Insertion order
25 #[cfg(feature = "preserve_order")]
26 const EXPECTED: &[&str] = &["b", "a", "c"];
27
28 let mut v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
29 let val = v.as_object_mut().unwrap();
30 let mut m = Map::new();
31 m.append(val);
32 let keys: Vec<_> = m.keys().collect();
33
34 assert_eq!(keys, EXPECTED);
35 assert!(val.is_empty());
36}
37
38#[test]
39fn test_retain() {
40 let mut v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
41 let val = v.as_object_mut().unwrap();
42 val.retain(|k, _| k.as_str() != "b");
43
44 let keys: Vec<_> = val.keys().collect();
45 assert_eq!(keys, &["a", "c"]);
46}
47