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#![allow(
clippy::derive_partial_eq_without_eq,
clippy::from_iter_instead_of_collect,
clippy::zero_sized_map_values
)]
use serde::Deserialize;
use serde_derive::Deserialize;
use std::collections::{BTreeMap as Map, BTreeSet as Set};
use std::iter::FromIterator;
fn assert_ignored<'de, T>(json: &'de str, expected: &[&str]) -> T
where
T: Deserialize<'de>,
{
let de = &mut serde_json::Deserializer::from_str(json);
let mut unused = Set::new();
let value: T = serde_ignored::deserialize(de, |path| {
unused.insert(path.to_string());
})
.unwrap();
let expected = Set::from_iter(expected.iter().copied().map(str::to_owned));
assert_eq!(unused, expected);
value
}
#[derive(Debug, Deserialize)]
struct V {
#[allow(dead_code)]
used: (),
}
#[test]
fn test_readme() {
#[derive(Debug, PartialEq, Deserialize)]
struct Package {
name: String,
dependencies: Map<String, Dependency>,
}
#[derive(Debug, PartialEq, Deserialize)]
struct Dependency {
version: String,
}
let json = r#"{
"name": "demo",
"dependencies": {
"serde": {
"version": "1.0",
"typo1": ""
}
},
"typo2": {
"inner": ""
},
"typo3": {}
}"#;
let ignored = &["dependencies.serde.typo1", "typo2", "typo3"];
let p: Package = assert_ignored(json, ignored);
let expected = Package {
name: "demo".to_owned(),
dependencies: {
let mut map = Map::new();
map.insert(
"serde".to_owned(),
Dependency {
version: "1.0".to_owned(),
},
);
map
},
};
assert_eq!(p, expected);
}
#[test]
fn test_int_key() {
#[derive(Debug, Deserialize)]
struct Test {
#[allow(dead_code)]
a: Map<usize, V>,
}
let json = r#"{
"a": {
"2": {
"used": null,
"unused": null
}
}
}"#;
let ignored = &["a.2.unused"];
assert_ignored::<Test>(json, ignored);
}
#[test]
fn test_newtype_key() {
type Test = Map<Key, V>;
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Deserialize)]
struct Key(&'static str);
let json = r#"{
"k": {
"used": null,
"unused": null
}
}"#;
let ignored = &["k.unused"];
assert_ignored::<Test>(json, ignored);
}
#[test]
fn test_unit_variant_key() {
type Test = Map<Key, V>;
#[derive(Debug, Eq, PartialEq, Ord, PartialOrd, Deserialize)]
enum Key {
First,
Second,
}
let json = r#"{
"First": {
"used": null,
"unused": null
}
}"#;
let ignored = &["First.unused"];
assert_ignored::<Test>(json, ignored);
}
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