nodejs/test/parallel/test-cli-node-options.js

'use strict';
const common = require('../common');
if (process.config.variables.node_without_node_options)
  common.skip('missing NODE_OPTIONS support');

// Test options specified by env variable.

const assert = require('assert');
const exec = require('child_process').execFile;

common.refreshTmpDir();
process.chdir(common.tmpDir);

expect(`-r ${require.resolve('../fixtures/printA.js')}`, 'A\nB\n');
expect('--no-deprecation', 'B\n');
expect('--no-warnings', 'B\n');
expect('--trace-warnings', 'B\n');
expect('--redirect-warnings=_', 'B\n');
expect('--trace-deprecation', 'B\n');
expect('--trace-sync-io', 'B\n');
expect('--trace-events-enabled', 'B\n');
expect('--track-heap-objects', 'B\n');
expect('--throw-deprecation', 'B\n');
expect('--zero-fill-buffers', 'B\n');
expect('--v8-pool-size=10', 'B\n');

if (common.hasCrypto) {
  expect('--use-openssl-ca', 'B\n');
  expect('--use-bundled-ca', 'B\n');
  expect('--openssl-config=_ossl_cfg', 'B\n');
}

// V8 options
expect('--abort_on-uncaught_exception', 'B\n');
expect('--max-old-space-size=0', 'B\n');

function expect(opt, want) {
  const argv = ['-e', 'console.log("B")'];
  const opts = {
    env: Object.assign({}, process.env, { NODE_OPTIONS: opt }),
    maxBuffer: 1e6,
  };
  exec(process.execPath, argv, opts, common.mustCall((err, stdout) => {
    assert.ifError(err);
    if (stdout.includes(want)) return;

    const o = JSON.stringify(opt);
    assert.fail(`For ${o}, failed to find ${want} in: <\n${stdout}\n>`);
  }));
}