/**
 * The `icon` field's refinement (openspec/changes/module-icons, D3).
 *
 * This is the trust boundary: `manifest.yml` is hand-edited and the value ends
 * up drawn in a coloured row, so the check that it is monochrome-capable lives
 * here rather than in any consumer.
 */

import { describe, expect, test } from 'bun:test';
import { ModuleManifestSchema } from './schema';

function manifestWith(icon?: string): Record<string, unknown> {
  return {
    celilo_contract: '1.0',
    id: 'icon-fixture',
    name: 'Icon Fixture',
    version: '1.0.0',
    ...(icon === undefined ? {} : { icon }),
  };
}

describe('manifest icon', () => {
  test('accepts a BMP non-emoji scalar', () => {
    const parsed = ModuleManifestSchema.parse(manifestWith('⛨'));
    expect(parsed.icon).toBe('⛨');
  });

  test('accepts absence', () => {
    const parsed = ModuleManifestSchema.parse(manifestWith());
    expect(parsed.icon).toBeUndefined();
  });

  test('rejects U+1F512, naming the monochrome reason rather than the range', () => {
    const result = ModuleManifestSchema.safeParse(manifestWith('🔒'));
    expect(result.success).toBe(false);
    if (result.success) throw new Error('expected the padlock to be rejected');
    const message = result.error.issues[0]?.message ?? '';
    expect(message).toContain('monochrome');
    expect(message).toContain('U+1F512');
  });

  test('rejects a two-character string', () => {
    const result = ModuleManifestSchema.safeParse(manifestWith('⛨⛨'));
    expect(result.success).toBe(false);
    if (result.success) throw new Error('expected two characters to be rejected');
    expect(result.error.issues[0]?.message ?? '').toContain('exactly one character');
  });
});