iks 0.7.0

Fast, easy to use XML parser library for Jabber/XMPP and general XML processing
Documentation 
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/*
** This file is a part of Iksemel (XML parser for Jabber/XMPP)
** Copyright (C) 2025-2026 Gurer Ozen
**
** Iksemel is free software: you can redistribute it and/or modify it
** under the terms of the GNU Lesser General Public License as
** published by the Free Software Foundation, either version 3 of
** the License, or (at your option) any later version.
*/

use std::str::FromStr;

use crate::Document;

use super::*;

fn check_path(document: &Document, expression: &str, expected: &[&str]) {
    let p1 = XPath::new(expression).unwrap();
    let sequence = p1.apply(document).unwrap();
    assert_eq!(sequence.items.len(), expected.len());
    for (i, node) in sequence.items.iter().enumerate() {
        let result = match node {
            XPathValue::Node(cursor) => cursor.to_string(),
        };
        assert_eq!(result, expected[i]);
    }
}

#[test]
fn simple_steps() {
    let doc = Document::from_str(
        "<a><b><b/></b><d><e>123</e><f>456<b i=\"1\"/>789</f><b>abc</b></d></a>",
    )
    .unwrap();

    check_path(
        &doc,
        "/*",
        &["<a><b><b/></b><d><e>123</e><f>456<b i=\"1\"/>789</f><b>abc</b></d></a>"],
    );

    check_path(
        &doc,
        "/a",
        &["<a><b><b/></b><d><e>123</e><f>456<b i=\"1\"/>789</f><b>abc</b></d></a>"],
    );

    check_path(&doc, "/a/b", &["<b><b/></b>"]);

    check_path(&doc, "/a/d/f/b", &["<b i=\"1\"/>"]);

    check_path(
        &doc,
        "/a/d/*",
        &["<e>123</e>", "<f>456<b i=\"1\"/>789</f>", "<b>abc</b>"],
    );

    check_path(
        &doc,
        "//b",
        &["<b><b/></b>", "<b/>", "<b i=\"1\"/>", "<b>abc</b>"],
    );

    check_path(&doc, "/a/d//b", &["<b i=\"1\"/>", "<b>abc</b>"]);

    check_path(&doc, "//b/b", &["<b/>"]);
}

#[test]
fn predicates() {
    let doc = Document::from_str(
        "<a><b><c id='1'/></b><d><c id='2'>123</c></d><b><x id='1'/><c id='2'/></b></a>",
    )
    .unwrap();

    check_path(&doc, "/a/*[1]", &["<b><c id=\"1\"/></b>"]);

    check_path(&doc, "/a/*[2]", &["<d><c id=\"2\">123</c></d>"]);

    check_path(
        &doc,
        "//c[@id=2]",
        &["<c id=\"2\">123</c>", "<c id=\"2\"/>"],
    );

    check_path(&doc, "//*[@id=1]", &["<c id=\"1\"/>", "<x id=\"1\"/>"]);

    check_path(
        &doc,
        "//*[@id]",
        &[
            "<c id=\"1\"/>",
            "<c id=\"2\">123</c>",
            "<x id=\"1\"/>",
            "<c id=\"2\"/>",
        ],
    );
}