jsdoc/packages/jsdoc-parse/test/specs/lib/syntax.js

describe('@jsdoc/parse.Syntax', () => {
  const { Syntax } = require('../../../index');

  it('is an object', () => {
    expect(Syntax).toBeObject();
  });

  it('has values identical to their keys', () => {
    for (const key of Object.keys(Syntax)) {
      expect(key).toBe(Syntax[key]);
    }
  });
});