import { readFileSync } from 'node:fs';
import pkg from '../package.json';
import { describe, expect, it } from 'vitest';

const mapSource = readFileSync(new URL('./Map.tsx', import.meta.url), 'utf8');

describe('app version display', () => {
  it('package.json carries a valid semver version (single source of truth)', () => {
    expect(pkg.version).toMatch(/^\d+\.\d+\.\d+$/);
  });

  it('the header sources the version from package.json instead of hardcoding it', () => {
    expect(mapSource).toContain("from '../package.json'");
    expect(mapSource).toContain('v{pkg.version}');
  });
});