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use serde_json::{from_str, Map, Value};
#[test]
fn test_preserve_order() {
// Sorted order
#[cfg(not(feature = "preserve_order"))]
const EXPECTED: &[&str] = &["a", "b", "c"];
// Insertion order
#[cfg(feature = "preserve_order")]
const EXPECTED: &[&str] = &["b", "a", "c"];
let v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
let keys: Vec<_> = v.as_object().unwrap().keys().collect();
assert_eq!(keys, EXPECTED);
}
#[test]
fn test_append() {
// Sorted order
#[cfg(not(feature = "preserve_order"))]
const EXPECTED: &[&str] = &["a", "b", "c"];
// Insertion order
#[cfg(feature = "preserve_order")]
const EXPECTED: &[&str] = &["b", "a", "c"];
let mut v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
let val = v.as_object_mut().unwrap();
let mut m = Map::new();
m.append(val);
let keys: Vec<_> = m.keys().collect();
assert_eq!(keys, EXPECTED);
assert!(val.is_empty());
}
#[test]
fn test_retain() {
let mut v: Value = from_str(r#"{"b":null,"a":null,"c":null}"#).unwrap();
let val = v.as_object_mut().unwrap();
val.retain(|k, _| k.as_str() != "b");
let keys: Vec<_> = val.keys().collect();
assert_eq!(keys, &["a", "c"]);
}