node/test/parallel/test-zlib-convenience-methods.js

'use strict';
// test convenience methods with and without options supplied

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

let hadRun = 0;

const expect = 'blahblahblahblahblahblah';
const opts = {
  level: 9,
  chunkSize: 1024,
};

[
  ['gzip', 'gunzip'],
  ['gzip', 'unzip'],
  ['deflate', 'inflate'],
  ['deflateRaw', 'inflateRaw'],
].forEach(function(method) {

  zlib[method[0]](expect, opts, function(err, result) {
    zlib[method[1]](result, opts, function(err, result) {
      assert.strictEqual(result.toString(), expect,
                         `Should get original string after ${
                           method[0]}/${method[1]} with options.`);
      hadRun++;
    });
  });

  zlib[method[0]](expect, function(err, result) {
    zlib[method[1]](result, function(err, result) {
      assert.strictEqual(result.toString(), expect,
                         `Should get original string after ${
                           method[0]}/${method[1]} without options.`);
      hadRun++;
    });
  });

  let result = zlib[`${method[0]}Sync`](expect, opts);
  result = zlib[`${method[1]}Sync`](result, opts);
  assert.strictEqual(result.toString(), expect,
                     `Should get original string after ${
                       method[0]}/${method[1]} with options.`);
  hadRun++;

  result = zlib[`${method[0]}Sync`](expect);
  result = zlib[`${method[1]}Sync`](result);
  assert.strictEqual(result.toString(), expect,
                     `Should get original string after ${
                       method[0]}/${method[1]} without options.`);
  hadRun++;

});

process.on('exit', function() {
  assert.strictEqual(hadRun, 16, 'expect 16 compressions');
});