How to use

spawnSync

function

in

child_process

console.log(`Installing npm packages...`);
console.log();
let command = spawnSync(
 /^win/.test(process.platform) ? 'npm.cmd' : 'npm', ['install'], {
  stdio: [0, 1, 2],

console.log(`Installing npm packages...`);
console.log();
let command = spawnSync(
 /^win/.test(process.platform) ? 'npm.cmd' : 'npm', ['install'], {
  stdio: [0, 1, 2],

it('manages multiple servers', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.multiserver.js'])
  expect(result.stdout.toString().trim()).to.eql([
   'server1:onSignal',
   'server2:onSignal',
   'server3:onSignal'
  ].join('\n'))
 })

it('runs onSignal when getting the SIGTERM signal', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onsigterm.js'])
  expect(result.stdout.toString().trim()).to.eql('on-sigterm-runs')
 })

it('runs onSignal when getting SIGUSR2 signal', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onsigusr2.js'])
  expect(result.stdout.toString().trim()).to.eql('on-sigusr2-runs')
 })

it('runs onSignal when getting SIGINT signal', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onsigint.js'])
  expect(result.stdout.toString().trim()).to.eql('on-sigint-runs')
 })

it('runs onSignal when killed with SIGTERM and multiple signals are listened for', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onmultiple.js', 'SIGTERM'])
  expect(result.stdout.toString().trim()).to.eql('on-sigterm-runs')
 })

it('runs onSignal when killed with SIGUSR2 and multiple signals are listened for', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onmultiple.js', 'SIGUSR2'])
  expect(result.stdout.toString().trim()).to.eql('on-sigusr2-runs')
 })

it('runs onShutdown after onSignal when killed with SIGINT and multiple signals are listened for', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onshutdown.multiple.js', 'SIGINT'])
  expect(result.stdout.toString().trim()).to.eql('on-sigint-runs\non-shutdown-runs')
 })

it('runs onShutdown after onSignal when killed with SIGUSR2 and multiple signals are listened for', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onshutdown.multiple.js', 'SIGUSR2'])
  expect(result.stdout.toString().trim()).to.eql('on-sigusr2-runs\non-shutdown-runs')
 })

it('runs onShutdown after SIGTERM onSignal', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onshutdown.sigterm.js'])
  expect(result.stdout.toString().trim()).to.eql('on-sigterm-runs\non-shutdown-runs')
 })

it('runs onShutdown after SIGUSR2 onSignal', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onshutdown.sigusr2.js'])
  expect(result.stdout.toString().trim()).to.eql('on-sigusr2-runs\non-shutdown-runs')
 })

it('runs onShutdown after onSignal when killed with SIGTERM and multiple signals are listened for', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onshutdown.multiple.js', 'SIGTERM'])
  expect(result.stdout.toString().trim()).to.eql('on-sigterm-runs\non-shutdown-runs')
 })

it('runs onShutdown after SIGINT onSignal', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onshutdown.sigint.js'])
  expect(result.stdout.toString().trim()).to.eql('on-sigint-runs\non-shutdown-runs')
 })

it('runs onSignal when killed with SIGINT and multiple signals are listened for', () => {
  const result = spawnSync('node', ['lib/standalone-tests/terminus.onmultiple.js', 'SIGINT'])
  expect(result.stdout.toString().trim()).to.eql('on-sigint-runs')
 })