unqommented/lib/tests/findUncommentedFiles.emfile.retryfail.test.js

A Node.js utility that quickly identifies files with uncommented code in your codebase. Designed for developers who want to efficiently tell LLMs exactly which files need comments added.

require('qtests/setup');
jest.mock('qerrors', () => ({ qerrors: jest.fn() }));
const { qerrors } = require('qerrors');
const { test, expect, describe, beforeAll, afterAll } = require('@jest/globals');
const fs = require('fs');
const path = require('path');
const os = require('os');
const utils = require('../utils');

let tmpDir;
let targetFile;

beforeAll(() => {
  tmpDir = fs.mkdtempSync(path.join(os.tmpdir(), 'unqommented-'));
  targetFile = path.join(tmpDir, 'uncommented.js');
  fs.writeFileSync(targetFile, 'const x = 1;');
});

afterAll(() => {
  fs.rmSync(tmpDir, { recursive: true, force: true });
});

describe('findUncommentedFiles EMFILE retry failure', () => {
  test('records error and returns null when retry fails', async () => {
    const spy = jest
      .spyOn(utils, 'hasUncommentedCode')
      .mockImplementationOnce(() => {
        const err = new Error('too many open files');
        err.code = 'EMFILE';
        return Promise.reject(err);
      })
      .mockImplementationOnce(() => {
        const err = new Error('still too many');
        err.code = 'EMFILE';
        return Promise.reject(err);
      });

    let unhandled = false;
    const handler = () => { unhandled = true; };
    process.on('unhandledRejection', handler);

    const result = await utils.findUncommentedFiles(tmpDir);

    process.removeListener('unhandledRejection', handler);

    expect(unhandled).toBe(false);
    expect(result.uncommentedFiles).toEqual([]);
    expect(result.errors).toEqual([{ file: targetFile, error: 'still too many' }]);
    expect(qerrors).toHaveBeenCalledWith(expect.any(Error), 'findUncommentedFiles', { file: targetFile });

    spy.mockRestore();
    qerrors.mockClear();
  });
});