parse-changelog 0.6.16

Simple changelog parser, written in Rust.
Documentation 
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// SPDX-License-Identifier: Apache-2.0 OR MIT

use super::*;

#[test]
fn test_extract_version_from_title() {
    fn version(s: &str) -> (&str, &str) {
        extract_version_from_title(s, default_prefix_format())
    }

    assert_eq!(version("[1.0.0]"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0](link)"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0]()"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0][link]"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0][]"), ("1.0.0", ""));

    assert_eq!(version("v[1.0.0]"), ("1.0.0", ""));
    assert_eq!(version("v[1.0.0](link)"), ("1.0.0", ""));
    assert_eq!(version("v[1.0.0]()"), ("1.0.0", ""));
    assert_eq!(version("v[1.0.0][link]"), ("1.0.0", ""));
    assert_eq!(version("v[1.0.0][]"), ("1.0.0", ""));

    assert_eq!(version("[v1.0.0]"), ("1.0.0", ""));
    assert_eq!(version("[v1.0.0](link)"), ("1.0.0", ""));
    assert_eq!(version("[v1.0.0]()"), ("1.0.0", ""));
    assert_eq!(version("[v1.0.0][link]"), ("1.0.0", ""));
    assert_eq!(version("[v1.0.0][]"), ("1.0.0", ""));

    assert_eq!(version("[1.0.0] 2022"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0](link) 2022"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0]() 2022"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0][link] 2022"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0][] 2022"), ("1.0.0", ""));

    assert_eq!(version("[1.0.0 2022]"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0 2022](link)"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0 2022]()"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0 2022][link]"), ("1.0.0", ""));
    assert_eq!(version("[1.0.0 2022][]"), ("1.0.0", ""));

    // unclosed '['
    assert_eq!(version("[1.0.0"), ("1.0.0", ""));
    assert_eq!(version("v[1.0.0"), ("1.0.0", ""));
    assert_eq!(version("[v1.0.0"), ("1.0.0", ""));

    assert_eq!(version("[1.0.0]a(link)"), ("1.0.0", "a(link)"));
    assert_eq!(version("[1.0.0][]]"), ("1.0.0", "]"));
    assert_eq!(version("[1.0.0](link)a"), ("1.0.0", "a"));
}

// See also "Note" section in `unlink` function.
#[test]
fn test_unlink() {
    assert_eq!(unlink("[1.0.0]"), ("1.0.0", ""));
    assert_eq!(unlink("[1.0.0](link)"), ("1.0.0", ""));
    assert_eq!(unlink("[1.0.0]()"), ("1.0.0", ""));
    assert_eq!(unlink("[1.0.0]("), ("1.0.0", "("));
    assert_eq!(unlink("[1.0.0][link]"), ("1.0.0", ""));
    assert_eq!(unlink("[1.0.0][]"), ("1.0.0", ""));
    assert_eq!(unlink("[1.0.0]["), ("1.0.0", "["));

    // no-op
    assert_eq!(unlink("1.0.0"), ("1.0.0", ""));

    // Link without trailing ']': e.g., [1.0.0 2022-01-01]
    assert_eq!(unlink("[1.0.0"), ("1.0.0", ""));
    assert_eq!(unlink("[1.0.0(a)"), ("1.0.0(a)", ""));

    // Link without leading '[': e.g., [Version 1.0.0]
    assert_eq!(unlink("1.0.0]"), ("1.0.0", ""));
    assert_eq!(unlink("1.0.0](link)"), ("1.0.0", ""));
    assert_eq!(unlink("1.0.0][link]"), ("1.0.0", ""));

    assert_eq!(unlink("[1.0.0]a(link)"), ("1.0.0", "a(link)"));
    assert_eq!(unlink("[1.0.0][]]"), ("1.0.0", "]"));
    assert_eq!(unlink("[1.0.0](link)a"), ("1.0.0", "a"));
}

#[test]
fn test_full_unlink() {
    assert_eq!(full_unlink("[1.0.0]"), "1.0.0");
    assert_eq!(full_unlink("[1.0.0]()"), "1.0.0");
    assert_eq!(full_unlink("[1.0.0]("), "1.0.0(");
    assert_eq!(full_unlink("[1.0.0](link)"), "1.0.0");
    assert_eq!(full_unlink("[1.0.0][]"), "1.0.0");
    assert_eq!(full_unlink("[1.0.0]["), "1.0.0"); // TODO
    assert_eq!(full_unlink("[1.0.0][link]"), "1.0.0");
    assert_eq!(full_unlink("[1.0.0][link1][a](link2)"), "1.0.0a");
    assert_eq!(full_unlink("[1.0.0][link1][a][link2]"), "1.0.0a");
    assert_eq!(full_unlink("v [1.0.0][link1][a](link2) [b][link3] [c] (d)"), "v 1.0.0a b c (d)");

    // no-op
    assert_eq!(full_unlink("1.0.0"), "1.0.0");

    // Link without trailing ']': e.g., [1.0.0 2022-01-01]
    assert_eq!(full_unlink("[1.0.0"), "1.0.0"); // TODO
    assert_eq!(full_unlink("[1.0.0(a)"), "1.0.0(a)"); // TODO

    // Link without leading '[': e.g., [Version 1.0.0]
    assert_eq!(full_unlink("1.0.0]"), "1.0.0]");
    assert_eq!(full_unlink("1.0.0](link)"), "1.0.0](link)");
    assert_eq!(full_unlink("1.0.0][link]"), "1.0.0]link");
}