zettelclean/src/slug.test.ts

// *************************************************************************
// * (C)opyright 2026         by Ruben Carlo Benante                       *
// *                                                                       *
// * This program is free software; you can redistribute it and/or modify  *
// *  it under the terms of the GNU General Public License as published by *
// *  the Free Software Foundation, either version 3 of the License, or    *
// *  (at your option) any later version.                                  *
// *                                                                       *
// * This program is distributed in the hope that it will be useful,       *
// *  but WITHOUT ANY WARRANTY; without even the implied warranty of       *
// *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the        *
// *  GNU General Public License for more details.                         *
// *                                                                       *
// * You should have received a copy of the GNU General Public License     *
// *  along with this program.  If not, see http://www.gnu.org/licenses/.  *
// *                                                                       *
// * Contact author at:                                                    *
// *  Ruben Carlo Benante                                                  *
// *  rcb@beco.cc                                                          *
// *************************************************************************

import { test } from 'node:test';
import assert from 'node:assert/strict';
import { extractTimeId, generateSlug, buildFilename } from './slug.ts';

test('slug folds accents and collapses, preserving case', () => {
	assert.equal(
		generateSlug('Ciências Políticas - Visão Geral'),
		'Ciencias-Politicas-Visao-Geral',
	);
	assert.equal(generateSlug('Citações'), 'Citacoes');
});

test('slug collapses runs of punctuation and whitespace to one dash', () => {
	assert.equal(generateSlug('  Hello,   World!!  '), 'Hello-World');
	assert.equal(generateSlug('a/b:c*d?e'), 'a-b-c-d-e');
});

test('empty or heading-less input yields empty slug', () => {
	assert.equal(generateSlug(''), '');
	assert.equal(generateSlug('   ---   '), '');
});

test('extractTimeId accepts 12/14/18-digit prefixes and a non-dash boundary', () => {
	assert.equal(extractTimeId('202607281454-x'), '202607281454'); // 12, dash
	assert.equal(extractTimeId('20260728145404-x'), '20260728145404'); // 14
	assert.equal(extractTimeId('202607281454049999-x'), '202607281454049999'); // 18
	assert.equal(extractTimeId('20260728145404'), '20260728145404'); // bare id
	assert.equal(extractTimeId('202607290947 test pkm'), '202607290947'); // space
	assert.equal(extractTimeId('202607290947test'), '202607290947'); // letters
	assert.equal(extractTimeId('my-note'), null);
	assert.equal(extractTimeId('2026-budget'), null); // too short
	assert.equal(extractTimeId('2026072814540499999-x'), null); // 19, too long
});

test('buildFilename collapses empty slug to bare id', () => {
	assert.equal(
		buildFilename('20260728145404', 'some-title'),
		'20260728145404-some-title',
	);
	assert.equal(buildFilename('20260728145404', ''), '20260728145404');
});