import assert from 'node:assert/strict';
import { readFile } from 'node:fs/promises';
import test from 'node:test';

test('design preview serializes the complete visible document before PNG upload', async () => {
  const source = await readFile(new URL('../src/lib/designPreview.ts', import.meta.url), 'utf8');

  assert.match(source, /serializeDocument\(document, stickers, \{ includeBackground: true \}\)/);
  assert.match(source, /canvas\.toBlob/);
});

test('archive client submits document JSON and a PNG preview as multipart data', async () => {
  const source = await readFile(new URL('../src/lib/productArchive.ts', import.meta.url), 'utf8');

  assert.match(source, /form\.append\('document_json'/);
  assert.match(source, /form\.append\('preview'/);
});