json-patch 0.2.2

RFC 6902, JavaScript Object Notation (JSON) Patch
Documentation 
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#![allow(unused)]
extern crate rand;
#[cfg(feature = "nightly")]
extern crate test;

mod util;
mod generator;

#[cfg(feature = "nightly")]
use self::test::Bencher;
use self::rand::SeedableRng;
use super::*;
use serde_json::from_str;

#[test]
fn parse_from_value() {
    use PatchOperation::*;

    let json = json!([{"op": "add", "path": "/a/b", "value": 1}, {"op": "remove", "path": "/c"}]);
    let patch: Patch = from_value(json).unwrap();

    assert_eq!(
        patch,
        Patch(vec![
            Add(AddOperation {
                path: String::from("/a/b"),
                value: Value::from(1),
            }),
            Remove(RemoveOperation {
                path: String::from("/c"),
            }),
        ])
    );

    let _patch: Patch = from_str(
        r#"[{"op": "add", "path": "/a/b", "value": 1}, {"op": "remove", "path": "/c"}]"#,
    ).unwrap();
}

#[test]
fn parse_from_string() {
    use PatchOperation::*;

    let patch: Patch = from_str(
        r#"[{"op": "add", "path": "/a/b", "value": 1}, {"op": "remove", "path": "/c"}]"#,
    ).unwrap();

    assert_eq!(
        patch,
        Patch(vec![
            Add(AddOperation {
                path: String::from("/a/b"),
                value: Value::from(1),
            }),
            Remove(RemoveOperation {
                path: String::from("/c"),
            }),
        ])
    );
}

#[test]
fn serialize_patch() {
    let s = r#"[{"op":"add","path":"/a/b","value":1},{"op":"remove","path":"/c"}]"#;
    let patch: Patch = from_str(s).unwrap();

    let serialized = serde_json::to_string(&patch).unwrap();
    assert_eq!(serialized, s);
}

#[test]
fn tests() {
    util::run_specs("specs/tests.json");
}

#[test]
fn spec_tests() {
    util::run_specs("specs/spec_tests.json");
}

#[test]
fn revert_tests() {
    util::run_specs("specs/revert_tests.json");
}

#[test]
fn merge_tests() {
    util::run_specs("specs/merge_tests.json");
}

#[cfg(feature = "nightly")]
#[bench]
fn bench_add_removes(b: &mut Bencher) {
    let mut rng = rand::StdRng::from_seed(Default::default());
    let params = generator::Params {
        ..Default::default()
    };
    let doc = params.gen(&mut rng);
    let patches = generator::gen_add_remove_patches(&doc, &mut rng, 10, 10);

    b.iter(|| {
        let mut doc = doc.clone();
        let mut result = Ok(());
        for ref p in &patches {
            // Patch mutable
            result = result.and_then(|_| patch(&mut doc, p));
        }
    });
}

#[cfg(feature = "nightly")]
#[bench]
fn bench_add_removes_unsafe(b: &mut Bencher) {
    let mut rng = rand::StdRng::from_seed(Default::default());
    let params = generator::Params {
        ..Default::default()
    };
    let doc = params.gen(&mut rng);
    let patches = generator::gen_add_remove_patches(&doc, &mut rng, 10, 10);

    b.iter(|| {
        let mut doc = doc.clone();
        let mut result = Ok(());
        for ref p in &patches {
            // Patch mutable
            result = unsafe { result.and_then(|_| patch_unsafe(&mut doc, p)) };
        }
    });
}