mt-dom 0.14.0

A library for generating patches as a result diffing virtual DOM tree
Documentation 
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use mt_dom::{diff::*, patch::*, *};

pub type MyNode =
    Node<&'static str, &'static str, &'static str, &'static str, &'static str>;
// should have no changes
#[test]
fn mixed_key_and_no_key_with_no_change() {
    let old: MyNode = element(
        "main",
        vec![attr("class", "container")],
        vec![
            element("div", vec![], vec![leaf("1")]),
            element("div", vec![attr("key", "2")], vec![leaf("2")]),
            element("div", vec![], vec![leaf("3")]),
        ],
    );

    let new: MyNode = element(
        "main",
        vec![attr("class", "container")],
        vec![
            element("div", vec![], vec![leaf("1")]),
            element("div", vec![attr("key", "2")], vec![leaf("2")]),
            element("div", vec![], vec![leaf("3")]),
        ],
    );

    let diff = diff_with_key(&old, &new, &"key");
    assert_eq!(diff, vec![]);
}

#[test]
fn mixed_key_and_no_key_with_2_matched() {
    let old: MyNode = element(
        "main",
        vec![attr("class", "container")],
        vec![
            element("div", vec![], vec![leaf("1")]),
            element("div", vec![attr("key", "2")], vec![leaf("2")]),
            element("div", vec![attr("key", "2")], vec![leaf("2")]),
            element("div", vec![], vec![leaf("3")]),
        ],
    );

    let new: MyNode = element(
        "main",
        vec![attr("class", "container")],
        vec![
            element("div", vec![], vec![leaf("1")]),
            element("div", vec![attr("key", "2")], vec![leaf("1")]),
            element("div", vec![attr("key", "2")], vec![leaf("3")]),
            element("div", vec![], vec![leaf("3")]),
        ],
    );

    let diff = diff_with_key(&old, &new, &"key");
    dbg!(&diff);
    assert_eq!(
        diff,
        vec![
            Patch::replace_leaf(TreePath::new(vec![0, 1, 0]), &"2", &"1"),
            Patch::replace_leaf(TreePath::new(vec![0, 2, 0]), &"2", &"3")
        ]
    );
}

#[test]
fn mixed_key_and_no_key_with_misordered_2_matched() {
    let old: MyNode = element(
        "main",
        vec![attr("class", "container")],
        vec![
            element("div", vec![attr("key", "2")], vec![leaf("2")]),
            element("div", vec![], vec![leaf("1")]),
            element("div", vec![attr("key", "2")], vec![leaf("2")]),
            element("div", vec![], vec![leaf("3")]),
        ],
    );

    let new: MyNode = element(
        "main",
        vec![attr("class", "container")],
        vec![
            element("div", vec![], vec![leaf("1")]),
            element("div", vec![attr("key", "2")], vec![leaf("2")]),
            element("div", vec![attr("key", "2")], vec![leaf("2")]),
            element("div", vec![], vec![leaf("3")]),
        ],
    );

    let diff = diff_with_key(&old, &new, &"key");
    dbg!(&diff);

    assert_eq!(
        diff,
        vec![
            Patch::insert_node(
                Some(&"main"),
                TreePath::new(vec![0, 0]),
                &element("div", vec![], vec![leaf("1")]),
            ),
            Patch::remove_node(Some(&"div"), TreePath::new(vec![0, 1]),),
        ]
    );
}