test-http-parser-lazy-loaded.js

// Flags: --expose-internals

'use strict';
const common = require('../common');
const { getOptionValue } = require('internal/options');

// Monkey patch before requiring anything
class DummyParser {
  constructor() {
    this.test_type = null;
  }
  initialize(type) {
    this.test_type = type;
  }
}
DummyParser.REQUEST = Symbol();

// Note: using process.binding instead of internalBinding because this test is
// verifying that user applications are still able to monkey-patch the
// http_parser module.
const binding =
  getOptionValue('--http-parser') === 'legacy' ?
    process.binding('http_parser') : process.binding('http_parser_llhttp');
binding.HTTPParser = DummyParser;

const assert = require('assert');
const { spawn } = require('child_process');
const { parsers } = require('_http_common');

// Test _http_common was not loaded before monkey patching
const parser = parsers.alloc();
parser.initialize(DummyParser.REQUEST, {});
assert.strictEqual(parser instanceof DummyParser, true);
assert.strictEqual(parser.test_type, DummyParser.REQUEST);

if (process.argv[2] !== 'child') {
  // Also test in a child process with IPC (specific case of https://github.com/nodejs/node/issues/23716)
  const child = spawn(process.execPath, [
    '--expose-internals',
    `--http-parser=${getOptionValue('--http-parser')}`,
    __filename, 'child'
  ], {
    stdio: ['inherit', 'inherit', 'inherit', 'ipc']
  });
  child.on('exit', common.mustCall((code, signal) => {
    assert.strictEqual(code, 0);
    assert.strictEqual(signal, null);
  }));
}