[Init] Initial commit - NetMesh terminal manager

domain/vaultNoteRead.test.ts

@@ -0,0 +1,62 @@
+import { test } from 'node:test';
+import assert from 'node:assert/strict';
+import { readVaultNote } from './vaultNoteRead';
+
+const note = { id: 'note-1', title: 'Runbook', content: '', createdAt: 1, updatedAt: 2 };
+
+function read(...args: Parameters<typeof readVaultNote>) {
+  const result = readVaultNote(...args);
+  assert.ok('note' in result, JSON.stringify(result));
+  return result;
+}
+
+test('bounded pages reconstruct long Unicode notes without gaps or broken characters', () => {
+  const content = `${'a'.repeat(5999)}\u{1F408}中文\n`.repeat(20);
+  let offset: number | null = 0;
+  let collected = '';
+  while (offset !== null) {
+    const result = read({ ...note, content }, { offset, maxChars: 1_000_000, expectedUpdatedAt: 2 });
+    assert.ok(result.note);
+    assert.equal(result.offset, offset);
+    assert.ok(result.note.content.length <= 6000);
+    assert.doesNotMatch(result.note.content, /^[\uDC00-\uDFFF]|[\uD800-\uDBFF]$/);
+    collected += result.note.content;
+    offset = result.nextOffset;
+  }
+  assert.equal(collected, content);
+});
+
+test('small/empty notes and EOF are complete, and oversized metadata stays out', () => {
+  for (const content of ['', 'small note']) {
+    const result = read({ ...note, content, title: 'x'.repeat(100_000), tags: ['x'.repeat(100_000)] }, {});
+    assert.ok(result.note);
+    assert.equal(result.note.content, content);
+    assert.equal(result.nextOffset, null);
+    assert.ok(JSON.stringify(result).length < 1000);
+  }
+  assert.equal(read({ ...note, content: 'abc' }, { offset: 3 }).note?.content, '');
+});
+
+test('literal search locates later and overlapping hits without skipping nearby matches', () => {
+  const source = { ...note, content: `${'x'.repeat(9000)}ababa\u{1F408}tail` };
+  const first = read(source, { query: 'aba', maxChars: 4 });
+  assert.equal(first.matchOffset, 9000);
+  assert.equal(first.note?.content, 'abab');
+  const second = read(source, { query: 'aba', offset: first.nextOffset, expectedUpdatedAt: 2 });
+  assert.equal(second.matchOffset, 9002);
+  const missing = read(source, { query: 'aba', offset: second.nextOffset });
+  assert.equal(missing.matchOffset, null);
+  assert.equal(missing.nextOffset, null);
+  assert.equal(missing.note?.content, '');
+  assert.equal(read(source, { query: 'ABA' }).matchOffset, null);
+  assert.equal(read(source, { query: '.*' }).matchOffset, null);
+});
+
+test('invalid ranges, queries and changed notes fail explicitly', () => {
+  const source = { ...note, content: 'a\u{1F408}b' };
+  for (const params of [
+    { offset: -1 }, { offset: 0.5 }, { offset: 9 }, { offset: 2 }, { offset: '1' },
+    { maxChars: 0 }, { maxChars: NaN }, { maxChars: Infinity },
+    { query: '' }, { query: 'a'.repeat(201) }, { query: 1 }, { expectedUpdatedAt: 1 },
+  ]) assert.equal(readVaultNote(source, params).ok, false, JSON.stringify(params));
+});