import assert from 'node:assert/strict';
import { readFile } from 'node:fs/promises';
import * as settings from '../src/constants/glass.ts';
const shader = await readFile(new URL('../src/shaders/mosaic.frag', import.meta.url), 'utf8');
assert.ok(settings.GLASS_TRANSMISSION_DETAIL > 0 && settings.GLASS_TRANSMISSION_DETAIL < 0.5,
  'maximum simplification must retain optical detail while keeping color planes dominant');
assert.match(shader, /candidateColor=mix\(candidateColor,color.rgb,uTransmissionDetail\)/,
  'retain the refracted scene, not raw photo UV or a facial-feature fallback');
console.log('Glass material keeps continuous refracted detail under maximum color-plane simplification.');