import { describe, it, expect } from 'vitest';
import { presetActiveId, isPresetActiveId, presetIdFromActiveId } from '../local-settings';

describe('preset active-id helpers', () => {
  it('round-trips a preset id through the prefixed activeProfileId space', () => {
    const activeId = presetActiveId('preset-abc123');
    expect(activeId).toBe('preset:preset-abc123');
    expect(isPresetActiveId(activeId)).toBe(true);
    expect(presetIdFromActiveId(activeId)).toBe('preset-abc123');
  });

  it('does not mistake a personal profile id for a preset id', () => {
    const profileId = 'profile-xyz789-abc123';
    expect(isPresetActiveId(profileId)).toBe(false);
    expect(presetIdFromActiveId(profileId)).toBeNull();
  });

  it('handles null safely', () => {
    expect(isPresetActiveId(null)).toBe(false);
    expect(presetIdFromActiveId(null)).toBeNull();
  });
});