serde_json_diff 0.2.0

Create machine-readable JSON diffs
Documentation 
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use serde_json::json;
use serde_json_diff::ArrayDifference;

#[test]
fn kitchen_sink() {
    let a = json!({
      "A": "a",
      "B": "a",
      "D": 1,
      "E": 1,
      "F": [],
      "G": ["a", "a"],
    });
    let b = json!({
      "A": "a",
      "C": "b",
      "D": 2,
      "E": "1",
      "F": [true],
      "G": ["a", "ab"],
    });

    let diff = serde_json_diff::objects(
        serde_json::from_value(a).unwrap(),
        serde_json::from_value(b).unwrap(),
    );

    insta::assert_snapshot!(serde_json::to_string_pretty(&diff).expect("couldn't pretty"));
}

#[test]
fn types() {
    let left = json!("a");
    let right = json!(true);

    let diff = serde_json_diff::values(left, right);

    insta::assert_snapshot!(serde_json::to_string_pretty(&diff).unwrap());
}

#[test]
fn entries() {
    let left = json!({
        "a": false,
        "c": 1,
    });
    let right = json!({
        "b": false,
        "c": 2,
    });

    let diff = serde_json_diff::objects(
        serde_json::from_value(left).unwrap(),
        serde_json::from_value(right).unwrap(),
    );

    insta::assert_snapshot!(serde_json::to_string_pretty(&diff).unwrap());
}

#[test]
fn arrays() {
    let source = json!([]);
    let target = json!([true]);

    let diff = serde_json_diff::arrays(
        serde_json::from_value(source).unwrap(),
        serde_json::from_value(target).unwrap(),
    );

    assert!(matches!(diff, Some(ArrayDifference::Shorter { .. })));

    let source = json!([true]);
    let target = json!([]);

    let diff = serde_json_diff::arrays(
        serde_json::from_value(source).unwrap(),
        serde_json::from_value(target).unwrap(),
    );

    assert!(matches!(diff, Some(ArrayDifference::Longer { .. })));

    let source = json!([true]);
    let target = json!([false]);

    let diff = serde_json_diff::arrays(
        serde_json::from_value(source).unwrap(),
        serde_json::from_value(target).unwrap(),
    );

    assert!(matches!(diff, Some(ArrayDifference::PairsOnly { .. })));

    let source = json!([true]);
    let target = json!([true]);

    let diff = serde_json_diff::arrays(
        serde_json::from_value(source).unwrap(),
        serde_json::from_value(target).unwrap(),
    );

    assert!(diff.is_none());
}