angular/adev/shared-docs/pipeline/guides/testing/docs-code-multifile/docs-code-multifile.spec.ts

import {parseMarkdown} from '../../../guides/parse';
import {runfiles} from '@bazel/runfiles';
import {readFile} from 'fs/promises';
import {JSDOM} from 'jsdom';
import {initHighlighter} from '../../extensions/docs-code/format/highlight';

describe('markdown to html', () => {
  let markdownDocument: DocumentFragment;

  beforeAll(async () => {
    await initHighlighter();
    const markdownContent = await readFile(
      runfiles.resolvePackageRelative('docs-code-multifile/docs-code-multifile.md'),
      {encoding: 'utf-8'},
    );
    markdownDocument = JSDOM.fragment(await parseMarkdown(markdownContent, {}));
  });

  it('converts triple ticks into a code block', () => {
    const multiFileEl = markdownDocument.querySelector('.docs-code-multifile');
    expect(multiFileEl).toBeTruthy();

    const codeBlockOne = multiFileEl!.children[0]!;
    expect(codeBlockOne).toBeTruthy();
    expect(codeBlockOne?.textContent?.trim()).toBe('this is code');

    const codeBlockTwo = multiFileEl!.children[1]!;
    expect(codeBlockTwo).toBeTruthy();
    expect(codeBlockTwo?.textContent?.trim()).toBe('this is also code');
  });
});