node/test/parallel/test-zlib-from-concatenated-gzip.js

'use strict';
// Test unzipping a gzip file that contains multiple concatenated "members"

const common = require('../common');
const assert = require('assert');
const zlib = require('zlib');

const data = Buffer.concat([
  zlib.gzipSync('abc'),
  zlib.gzipSync('def')
]);

assert.equal(zlib.gunzipSync(data).toString(), 'abcdef');

zlib.gunzip(data, common.mustCall((err, result) => {
  assert.ifError(err);
  assert.equal(result, 'abcdef', 'result should match original string');
}));