import { test } from 'node:test';
import assert from 'node:assert/strict';
import { serializePrefs, parsePrefs } from './prefs.mjs';

test('serializePrefs writes dashed keys with boolean values', () => {
  assert.equal(
    serializePrefs({ newLines: true, advanceFocus: false }),
    '{"new-lines":true,"advance-focus":false}',
  );
});

test('parsePrefs reads dashed keys into camelCase', () => {
  assert.deepEqual(
    parsePrefs('{"new-lines":true,"advance-focus":false}'),
    { newLines: true, advanceFocus: false },
  );
});

test('parsePrefs returns defaults for invalid JSON', () => {
  assert.deepEqual(parsePrefs('not json'), { newLines: false, advanceFocus: false });
});

test('parsePrefs returns defaults for null (missing localStorage entry)', () => {
  assert.deepEqual(parsePrefs(null), { newLines: false, advanceFocus: false });
});

test('parsePrefs defaults missing keys to false', () => {
  assert.deepEqual(parsePrefs('{"new-lines":true}'), { newLines: true, advanceFocus: false });
});

test('parsePrefs defaults non-boolean values to false', () => {
  assert.deepEqual(
    parsePrefs('{"new-lines":"yes","advance-focus":1}'),
    { newLines: false, advanceFocus: false },
  );
});