test/test/parallel/test-runner-misc.js

Node.js 18's node:test, as an npm package

// https://github.com/nodejs/node/blob/2e682f10b6104373fded64b0e364984b85ae2243/test/parallel/test-runner-misc.js

'use strict'
const common = require('../common')
const assert = require('assert')
const { spawnSync } = require('child_process')
const { setTimeout } = require('#timers/promises')

if (process.argv[2] === 'child') {
  const test = require('#node:test')

  if (process.argv[3] === 'abortSignal') {
    assert.throws(() => test({ signal: {} }), {
      code: 'ERR_INVALID_ARG_TYPE',
      name: 'TypeError'
    })

    let testSignal
    test({ timeout: 10 }, common.mustCall(async ({ signal }) => {
      assert.strictEqual(signal.aborted, false)
      testSignal = signal
      await setTimeout(50)
    })).finally(common.mustCall(() => {
      test(() => assert.strictEqual(testSignal.aborted, true))
    }))
  } else assert.fail('unreachable')
} else {
  const child = spawnSync(process.execPath, [__filename, 'child', 'abortSignal'])
  const stdout = child.stdout.toString()
  assert.match(stdout, /^# pass 1$/m)
  assert.match(stdout, /^# fail 0$/m)
  assert.match(stdout, /^# cancelled 1$/m)
  assert.strictEqual(child.status, 1)
  assert.strictEqual(child.signal, null)
}