date-prefix and sticky tail v0.6 for Obsidian v1.12.7 and v1.13.0 (min v1.0.0)

src/slug.test.ts

@@ -21,7 +21,13 @@
 
 import { test } from 'node:test';
 import assert from 'node:assert/strict';
-import { extractTimeId, generateSlug, buildFilename } from './slug.ts';
+import {
+	extractTimeId,
+	extractPrefix,
+	computeBasename,
+	generateSlug,
+	buildFilename,
+} from './slug.ts';
 
 test('slug folds accents and collapses, preserving case', () => {
 	assert.equal(
@@ -60,3 +66,31 @@ test('buildFilename collapses empty slug to bare id', () => {
 	);
 	assert.equal(buildFilename('20260728145404', ''), '20260728145404');
 });
+
+test('extractPrefix: timeid always, date only when allowed, dash does not split', () => {
+	assert.equal(extractPrefix('202607302233 vai', false), '202607302233'); // timeid
+	assert.equal(extractPrefix('2026-07-30-Journal', true), '2026-07-30'); // date, dash kept
+	assert.equal(extractPrefix('2026-07-30 Journal', true), '2026-07-30');
+	assert.equal(extractPrefix('2026-07-30 Journal', false), null); // date off
+	assert.equal(extractPrefix('my-note', true), null);
+});
+
+test('computeBasename: sticky tail rule', () => {
+	// H1 sets the tail
+	assert.equal(computeBasename('202607302233', 'Home', false), '202607302233-Home');
+	// delete H1 keeps the last slug (sticky)
+	assert.equal(computeBasename('202607302233-Home', '', false), '202607302233-Home');
+	// no H1: clean the existing tail
+	assert.equal(computeBasename('202607291108 vai', '', false), '202607291108-vai');
+	// punctuation-only H1: keep the existing tail
+	assert.equal(computeBasename('2026-07-30-Home', '!!!', true), '2026-07-30-Home');
+	// bare stays bare
+	assert.equal(computeBasename('202607302233', '', false), '202607302233');
+	// no usable title -> left untouched
+	assert.equal(computeBasename('2026-07-30 !!!', '', true), '2026-07-30 !!!');
+	// date mode gating
+	assert.equal(computeBasename('2026-07-30 Journal', '', true), '2026-07-30-Journal');
+	assert.equal(computeBasename('2026-07-30 Journal', '', false), null);
+	// unrecognized note
+	assert.equal(computeBasename('my-note', 'Title', true), null);
+});