error: "Leaking resources" using node:zlib in tests

[77it]

Version: Deno 1.40.5 on Windows 11

The following test ends in error (the same code works well in Node v21.6.2)

Leaking resources:
   - "zlib" was created during the test, but not cleaned up during the test. Close the resource before the end of the test.

import fs from 'node:fs';
import zlib from 'node:zlib';
import { pipeline } from 'node:stream/promises';

import { test } from 'node:test';

test('download file (fetch) + unzip gz file', async () => {
  const path = './converter.exe';
  const path_zip = path + '.gz';

  const dest = fs.createWriteStream(path_zip);

  //#region download and unzip file
  const url = 'https://github.com/77it/financial-modeling-binaries/releases/download/v0.0.5/Converter.exe.gz';

  const response = await fetch(url);

  if (!response.ok) {
    throw new Error(`Request failed with status ${response.status}`);
  } else if (!response.body) {
    throw new Error(`The requested download url ${url} doesn't contain an archive to download`);
  } else if (response.status === 404) {
    throw new Error(`The requested url "${url}" could not be found`);
  }

  await pipeline(
    response.body,
    dest
  );

  await unzipGzFile(path_zip, path);
  //#endregion

  //#region delete file
  fs.unlinkSync(path);
  fs.unlinkSync(path_zip);
  //#endregion
});

/**
 * Unzip a .gz file
 *
 * @param {string} path_zip - The path of the .gz file to unzip
 * @param {string} path - The path of the local file to create
 */
async function unzipGzFile(path_zip, path) {
  const source = fs.createReadStream(path_zip);
  const destination = fs.createWriteStream(path);
  const gunzip = zlib.createGunzip();

  await pipeline(
    source,
    gunzip,
    destination
  );
}

[77it]

Following the resolution of issue #22473 I would like to clarify that the "Leaking resources" error is also present in Deno.test(), then this issue should not be closed - possibly - without explaining how to make this code work under Deno. Thanks

[teidesu]

encountered this too. mcve:

import { gzipSync } from 'node:zlib';

Deno.test('gzip', () => {
    const data = new TextEncoder().encode('hello world');
    gzipSync(data);
})

errors with:

running 1 test from ./gzip-repro.test.ts
gzip ... FAILED (1ms)

 ERRORS 

gzip => ./gzip-repro.test.ts:3:6
error: Leaks detected:
  - "zlib" was created during the test, but not cleaned up during the test. Close the resource before the end of the test.

 FAILURES 

gzip => ./gzip-repro.test.ts:3:6

FAILED | 0 passed | 1 failed (99ms)

error: Test failed

issue is still present on latest canary:

deno 1.42.4+90a167a (canary, aarch64-apple-darwin)
v8 12.4.254.12
typescript 5.4.3