import assert from 'node:assert/strict';
import { test } from 'node:test';
import { buildCellUpdatedMessage } from './messageUtils.js';

const msg = (value) => buildCellUpdatedMessage({ lineId: 1, lineIdCode: '0.1', column: 'q1.m1', value });

test('buildCellUpdatedMessage: undefined → null, ключ value есть после JSON.stringify', () => {
	const m = msg(undefined);
	assert.deepEqual(m, { event: 'cell_updated', data: { line_id: 1, line_id_code: '0.1', column: 'q1.m1', value: null } });
	assert.match(JSON.stringify(m), /"value":null/);
});

test('buildCellUpdatedMessage: прочие значения не меняются', () => {
	for (const v of [null, 0, '', '1.5', 42, 'текст']) {
		assert.equal(msg(v).data.value, v);
	}
});