1 use serde_json::{from_str, Map, Value};
2
3 #[test]
test_preserve_order()4 fn 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]
19 #[cfg(feature = "preserve_order")]
test_shift_insert()20 fn test_shift_insert() {
21 let mut v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
22 let val = v.as_object_mut().unwrap();
23 val.shift_insert(0, "d".to_owned(), Value::Null);
24
25 let keys: Vec<_> = val.keys().collect();
26 assert_eq!(keys, &["d", "b", "a", "c"]);
27 }
28
29 #[test]
test_append()30 fn test_append() {
31 // Sorted order
32 #[cfg(not(feature = "preserve_order"))]
33 const EXPECTED: &[&str] = &["a", "b", "c"];
34
35 // Insertion order
36 #[cfg(feature = "preserve_order")]
37 const EXPECTED: &[&str] = &["b", "a", "c"];
38
39 let mut v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
40 let val = v.as_object_mut().unwrap();
41 let mut m = Map::new();
42 m.append(val);
43 let keys: Vec<_> = m.keys().collect();
44
45 assert_eq!(keys, EXPECTED);
46 assert!(val.is_empty());
47 }
48
49 #[test]
test_retain()50 fn test_retain() {
51 let mut v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
52 let val = v.as_object_mut().unwrap();
53 val.retain(|k, _| k.as_str() != "b");
54
55 let keys: Vec<_> = val.keys().collect();
56 assert_eq!(keys, &["a", "c"]);
57 }
58