thread-language 0.1.1

Language definitions and parsers for Thread
Documentation 
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// SPDX-FileCopyrightText: 2022 Herrington Darkholme <2883231+HerringtonDarkholme@users.noreply.github.com>
// SPDX-FileCopyrightText: 2025 Knitli Inc. <knitli@knit.li>
// SPDX-FileContributor: Adam Poulemanos <adam@knit.li>
//
// SPDX-License-Identifier: AGPL-3.0-or-later AND MIT
#![cfg(test)]
use super::*;
use crate::test::{test_match_lang, test_replace_lang};

fn test_match(s1: &str, s2: &str) {
    test_match_lang(s1, s2, Nix)
}

#[test]
fn test_nix_pattern() {
    test_match("$A + $B", "1 + 2");
    test_match("{ $A = $B; }", "{ foo = bar; }");
    test_match("with $A; $B", "with pkgs; hello");
    test_match("let $A = $B; in $C", "let x = 5; in x + 1");
}

#[test]
fn test_nix_function() {
    test_match("$A: $B", "x: x + 1");
    test_match("{ $A, $B }: $C", "{ foo, bar }: foo + bar");
    test_match("{ $A ? $B }: $C", "{ x ? 5 }: x * 2");
}

#[test]
fn test_nix_list() {
    test_match("[ $A $B ]", "[ 1 2 ]");
    test_match("[ $$$ITEMS ]", "[ 1 2 3 4 5 ]");
}

#[test]
fn test_nix_string() {
    test_match("\"$A\"", "\"hello\"");
    test_match("''$A''", "''multi\nline''");
}

fn test_replace(src: &str, pattern: &str, replacer: &str) -> String {
    test_replace_lang(src, pattern, replacer, Nix)
}

#[test]
fn test_nix_replace() {
    let ret = test_replace("1 + 2", "$A + $B", "$B + $A");
    assert_eq!(ret, "2 + 1");

    let ret = test_replace("{ foo = bar; }", "{ $A = $B; }", "{ $B = $A; }");
    assert_eq!(ret, "{ bar = foo; }");

    let ret = test_replace(
        "let x = 5; in x + 1",
        "let $A = $B; in $C",
        "let $A = $B * 2; in $C",
    );
    assert_eq!(ret, "let x = 5 * 2; in x + 1");
}