test: unit and end-to-end suites

Co-Authored-By: Claude Sonnet 5.5 <noreply@anthropic.com>

test/icons.test.js

@@ -0,0 +1,31 @@
+// The icon sets: every icon offered has a drawing, nothing is offered twice, and the drawings are well-formed.
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { PATHS, PICKER_ICONS, PICKER_EMOJI, isEmoji } from '../src/lib/icons.js';
+
+test('every icon in the picker has a drawing, and none is listed twice', () => {
+  const names = PICKER_ICONS.map(([n]) => n);
+  assert.deepEqual(names.filter((n) => !PATHS[n]), [], 'missing drawings');
+  assert.deepEqual(names.filter((n, i) => names.indexOf(n) !== i), [], 'duplicates');
+  for (const [n, words] of PICKER_ICONS) assert.ok(words && words.trim(), `${n} has search words`);
+  assert.ok(names.length >= 100, `a good number of icons (${names.length})`);
+});
+
+test('every drawing is made of valid path commands, inside the 24px grid', () => {
+  for (const [name, d] of Object.entries(PATHS)) {
+    for (const part of d.split('|')) {
+      assert.match(part, /^[MmLlHhVvCcSsQqTtAaZz0-9eE.,\s-]+$/, `${name}: unexpected characters in "${part}"`);
+      assert.match(part, /^[Mm]/, `${name}: a path starts with a move`);
+      const nums = (part.match(/-?\d*\.?\d+/g) || []).map(Number);
+      assert.ok(nums.length >= 2, `${name} has coordinates`);
+    }
+  }
+});
+
+test('emoji in the picker are real emoji, listed once, with words to find them by', () => {
+  const list = PICKER_EMOJI.map(([e]) => e);
+  assert.ok(list.every((e) => isEmoji(e)), 'all are emoji');
+  assert.deepEqual(list.filter((e, i) => list.indexOf(e) !== i), [], 'duplicates');
+  assert.ok(PICKER_EMOJI.every(([, words]) => words.trim()));
+  assert.ok(list.length >= 200, `plenty of emoji (${list.length})`);
+});