nodejs/test/parallel/test-async-hooks-fatal-error.js

'use strict';
require('../common');
const assert = require('assert');
const childProcess = require('child_process');
const os = require('os');

if (process.argv[2] === 'child') {
  child(process.argv[3], process.argv[4]);
} else {
  main();
}

function child(type, valueType) {
  const { createHook } = require('async_hooks');
  const fs = require('fs');

  createHook({
    [type]() {
      if (valueType === 'symbol') {
        throw Symbol('foo');
      }
      // eslint-disable-next-line no-throw-literal
      throw null;
    }
  }).enable();

  // Trigger `promiseResolve`.
  new Promise((resolve) => resolve())
  // Trigger `after`/`destroy`.
    .then(() => fs.promises.readFile(__filename, 'utf8'))
  // Make process exit with code 0 if no error caught.
    .then(() => process.exit(0));
}

function main() {
  const types = [ 'init', 'before', 'after', 'destroy', 'promiseResolve' ];
  const valueTypes = [
    [ 'null', 'Error: null' ],
    [ 'symbol', 'Error: Symbol(foo)' ],
  ];
  for (const type of types) {
    for (const [valueType, expect] of valueTypes) {
      const cp = childProcess.spawnSync(
        process.execPath,
        [ __filename, 'child', type, valueType ],
        {
          encoding: 'utf8',
        });
      assert.strictEqual(cp.status, 1, type);
      assert.strictEqual(cp.stderr.trim().split(os.EOL)[0], expect, type);
    }
  }
}