import { test } from 'node:test';
import assert from 'node:assert/strict';
import { KNOWN, emptySpec, normalizeToken, fingerprint, isUsable } from '../src/spec.js';

test('KNOWN enthaelt die erwarteten Wertelisten', () => {
  assert.ok(KNOWN.capacityGb.includes(64));
  assert.ok(KNOWN.speed.includes('PC4-2400'));
  assert.ok(KNOWN.formFactor.includes('LRDIMM'));
  assert.ok(KNOWN.rank.includes('4DRx4'));
});

test('emptySpec liefert alle Felder als null', () => {
  assert.deepEqual(emptySpec(), {
    capacityGb: null,
    formFactor: null,
    rank: null,
    speed: null,
    partNumber: null,
    dateCode: null,
  });
});

test('normalizeToken macht gross, trimmt und vereinheitlicht Bindestriche', () => {
  assert.equal(normalizeToken('  pc4‑2400 '), 'PC4-2400');
  assert.equal(normalizeToken('4drx4'), '4DRX4');
  assert.equal(normalizeToken(''), '');
  assert.equal(normalizeToken(null), '');
});

test('fingerprint setzt die Felder in fester Reihenfolge zusammen', () => {
  const spec = {
    capacityGb: 64,
    formFactor: 'LRDIMM',
    rank: '4DRx4',
    speed: 'PC4-2400',
    partNumber: 'M386A8K40BM1-CRC4Y',
    dateCode: '1908',
  };
  assert.equal(fingerprint(spec), 'LRDIMM|64|4DRX4|PC4-2400|M386A8K40BM1-CRC4Y');
});

test('fingerprint laesst den Datumscode aussen vor', () => {
  const a = { capacityGb: 64, formFactor: 'LRDIMM', rank: '4DRx4', speed: 'PC4-2400', partNumber: 'X', dateCode: '1908' };
  const b = { ...a, dateCode: '2013' };
  assert.equal(fingerprint(a), fingerprint(b));
});

test('fingerprint markiert fehlende Felder mit einem Fragezeichen', () => {
  const spec = { ...emptySpec(), capacityGb: 32 };
  assert.equal(fingerprint(spec), '?|32|?|?|?');
});

test('isUsable verlangt eine Kapazitaet', () => {
  assert.equal(isUsable({ ...emptySpec(), capacityGb: 64 }), true);
  assert.equal(isUsable(emptySpec()), false);
});