/** 沙箱视图出口:模版原文不改,只在 </body> 前注入报高脚本 */
import { describe, expect, it } from 'vitest';
import { ACTIVITY_VIEW_HEIGHT_MESSAGE } from '@contracts';
import { injectHeightScript } from '../activity-ops/view-html.ts';

describe('injectHeightScript', () => {
  it('插在 </body> 之前;没有 body 就追加;原文一字不改', () => {
    const html = '<!doctype html><html><body><h1>一览</h1></body></html>';
    const out = injectHeightScript(html);
    expect(out.startsWith('<!doctype html><html><body><h1>一览</h1>')).toBe(true);
    expect(out.indexOf('<script>')).toBeLessThan(out.indexOf('</body>'));
    expect(out).toContain(ACTIVITY_VIEW_HEIGHT_MESSAGE);
    expect(out).toContain("postMessage({type:T,height:h()},'*')");
    const bare = injectHeightScript('<p>x</p>');
    expect(bare.startsWith('<p>x</p>')).toBe(true);
    expect(bare).toContain('<script>');
  });
});